Post a New Question | Current Questions | Chat With Live Tutors
Homework Help: Health: Substance Abuse
Recent Homework Questions About Substance Abuse
Post a New Question | Current Questions
COM/220
Below the instructions and the script are my responses. could someone take a look and see if they seem so be correct? Write a minimum 500-word response to the following: 1. Identify and explain at least 2 specific examples of bias in the speech. 2. Identify and explain at leas...
COM/220
Below are my responses. could someone take a look and see if they seem so be correct? Write a minimum 500-word response to the following: 1. Identify and explain at least 2 specific examples of bias in the speech. 2. Identify and explain at least 2 specific examples of fallaci...
COM/220
Below are my responses. could someone take a look and see if they seem so be correct? Write a minimum 500-word response to the following: 1. Identify and explain at least 2 specific examples of bias in the speech. 2. Identify and explain at least 2 specific examples of fallaci...
Biology
In what kind of food is each of the following substances found: a)lactose b)sucrose c)cellulose d)sunflower oil e)liquid protein.
chem
. Give two reasons why graphite (carbon) electrodes are used in electrolysis. 5. You have 2 compounds called X and Y. X melts at 1200 degrees C and is soluble in water. Y melts at 156 degrees C and is insoluble in water. Draw 2 diagrams to show how you could prove which of the...
chemistry
4. Give two reasons why graphite (carbon) electrodes are used in electrolysis. 5. You have 2 compounds called X and Y. X melts at 1200 degrees C and is soluble in water. Y melts at 156 degrees C and is insoluble in water. Draw 2 diagrams to show how you could prove which of th...
chemistry
How would you find the empirical formula for this... a substance was found by analysis to contain 20% by mass calcium and 80% by mass bromine. Would it be CaBr2? This is what I did... 20g Ca * 20 mol Ca/801.56g Ca = .499 mol Ca 80g Br * 80 mol Br/6392.32g Br = 1.001 mol Br 1.0...
chemistry
How would you find the empirical formula for this... a substance was found by analysis to contain 20% by mass calcium and 80% by mass bromine. Would it be CaBr2? This is what I did... 50g Ca * 20 mol Ca/801.56g Ca = .499 mol Ca 80g Br * 80 mol Br/6392.32g Br = 1.001 mol Br 1.0...
chemistry
How would you find the empirical formula for this... a substance was found by analysis to contain 20% by mass calcium and 80% by mass bromine.
AP 9th grade-Philosophy
In order to prove this thesis by the Greek Thales, "All substances can be reduced to water." what would i have to do?! im clueless...
biology
substances that can pass through cell membranes by diffusion include?
Chemistry
Calcium nitrate and ammoonium fluoride react to form calcium fluoride, dinitrogenmonoxide and water vapor. What mass of each substance is present after 28.42 g of calcium nitrate and 29.60 g of ammonium fluoride react completely?
chem
DrBob222, thank you for answering my question(s). Sorry for asking repeatedly, I am new to this "posting" stuff. I thought I was asking different persons. Let me rephrase my question. How do I determine which roman numeral to place between the cation and the anion of...
chem
how do you know which roman numeral to place between the cation and the anion of a metal-nonmetal substance?
chem
how do you know which roman numeral to place between the cation and the anion of a metal/non-metal substance?
chemistry
how do you know which roman numeral to put between the cation and anion of a metal and non-metal substance?
chemistry
how do you know which roman numeral to put between the cation and the anion of a metal-nonmetal substance?
chemistry
how do you know what/which roman numeral to place between the cation and the anion of metal-nonmetal substances?
Science
Mass= 48g; volume=24 cm3 . What is the density of this substance ?
chemistry
2. Imagine you have two beakers. Both beakers are filled with the same amount of water. The water in both beakers is the same temperature as well. You add 50 g of Substance A to the first beaker, and 50 g of Substance B to the second beaker. After stirring both beakers, there ...
Chemistry/maths
What mass of substance would be needed to prepare these solutions: 1) 400ml (cm3) at 5% weight/volume 2) 50ml (cm3) of NAOH at 10% weight/volume thanks
Chemistry
What mass of substance would be needed to prepare these solutions: 1) 400ml (cm3) at 5% weight/volume 2) 50ml (cm3) of NAOH at 10% weight/volume
biology
How does the interaction between a carrier protein and the substance it transports resemble the interaction between an enzyme and its substrate?
biology
How does the interaction between a carrier protein and the substance it transports resemble the interaction between an enzyme and its substrate?
AD Analysis (URGENT)
I have to do an ad analysis on alcohol and I've decided to use a GREY GOOSE vodka ad. Here's the question I'm having trouble with. Why do you think the person who created this ad has presented substance use in this way? I don't know how to answer it. All I can ...
AP Chemistry
Textrodotoxin is a toxic chemical found in fugu pufferish, a popular but rare delicacy in Japan. The compound has a LD50 (the amount of substance that is lethal to 50% of a population of iron (iii) hydroxide. Textrodotoxin is 41.38% carbon by mass, 13.16% nitrogen by mass, and...
Science
can the mass of an object be used to indentify what substance it is made out of?
Chemistry130
Can someone please help me with this? Are these substances acids or bases? 1. Tums- Base, right? 2. Vitamin C- Acid, right? 3. Nail Polish Remover- Base or Acid? 4. Coca Cola Pop- Acid, right? 5. Cream of Tarter- Acid, right? 6. Calamine Lotion- Base or Acid? 7. Lemon Juice- A...
AP BIO
a student wished to test a sample of organic material to determine whether it was sugar, a dat, or starch. If she could perform only one of the following, which would be the most revealing? 1- test for the presence of carbon and hydrogen in the sample 2- test the sample to det...
Chemistry 130
Can someone please help me with this question? Could freezing point depression be used for substances that are not soluble in water? Please help me....can you explain why? Is there anywhere I can find this information because my chemistry book doesn't have any info. about ...
biology
Name the three substances that are produced when water molecules are broken down during the light reactions.
Chemistry 130
Can someone please help me and let me know if these questions and answers are correct? I just need a second opinion…and if there not correct can you help me…please?!? 1.(3). In the Arrhenius definition, an acid is a substance that a. turns litmus paper from blue to r...
chemistry please help
am doing my study guide for chem test - I cant find a good understadable answer for these 3 1. What is your definition of electrolysis? 2. How do you separate pure substances? 3. My book says mayonnaise is homogenous; teacher told the class it was heterogenous??? HELP
science help chemisry
I am doing my study guide for chem test - I cant find a good understadable answer for these 3 1. What is your definition of electrolysis? 2. How do you separate pure substances? 3. My book says mayonnaise is homogenous; teacher told the class it was heterogenous??? HELP
chemistry
how can i Specify what ions are present in solution upon dissolving each of the following substances in water: ZnCl2, HNO3, (NH4)2SO4,Ca(OH)2
10th grade English
This is my essay for the forum that I am attentding in few weeks time. The topic is shown below. Please make any corrections and check any awkward pharses A.S.A.P Thank you Can we balance Economic Growth and Environmental Conservation? Can we balance economic growth and enviro...
college CRT 205
Source 1 Title and Citation: Individuals can help reduce child abuse and neglect. Source Citation:Information, National Clearinghouse on Child Abuse and Neglect. "Individuals Can Help Reduce Child Abuse and Neglect." Child Abuse. Ed. Lucinda Almond. Current Controver...
Pysical Science
Mass of C3H8 Reacted with (g) Mass of O2 Reacted (g) Mass of CO2 Produced (g) 44 160 132 250 909 750 400 1,455 1,200 465 1,691 1,395 6. Based on the data in the table, how do you know that carbon dioxide is not the only substance formed in this chemical change?
chemistry
substance A has a boiling point of 80 degrees cel and a denisty of 3.5 g/cc. substance A which one; a; might be an element b; must be an element c; must be a compound d; might be a mixture
science
g) Use the substances given in table 1 to calculate the volume of 270 g of aluminum. The densities of substances given: glycerol (substance a) = 0.97 g/mL isoprop (substance b) = 1.20 g/mL water (substance c) = 0.85 g/mL How would i know what the mass is? Would i use the G.R.A...
Biology
I have two more questions. What carries secretions for export from cell? How do proteins and other substances get from ER to Golgi apparatus?
science
Technician A and Technician B are examining the same substance. Technician A records the mass, volume, and weight of the substance and decides that it is sugar. Technician B records the melting point, density, and boiling point of the substance and decides that it is salt. Whi...
AP Chemistry
C2H2(g) + 2H2(g) --> C2H6(g) Information about the substances involved in the reaction represented above is summarized in the following table: C2H2(g) 226.7 kj/mol C2H6(g) -84.7 kj/mol [the values are the change in enthalpy] a. write the equation for the heat formation of C...
com 220
What would be a better conclusion to my paper? Depression, anxiety, and other mental illnesses are worldwide to be thought of diseases that are “just in the head”. Even if that is true the patients know they are sick and they need help by taking medication or just ta...
Chemistry
Can someone please help me determine if these questions are correct. If there not can you point me in the rightdirection...please...please...and thank you! 1. Compared to the particles of a gas, the particles of a liquid a. Are not in constant motion b. Collide with the sides ...
Chemistry
Will someone please let me know if these answers are correct or not? If there not can you help me with them? Thanks so much in advance ;-) 1. In a tetrahedral molecule, how many unshared pairs of valence electrons does the central atom have? a. None b. One c. Two d. Three e. F...
ap chemistry
give an example of an organic compund made from inorganic substances
home economics
What substances keep the body working ?
Biology
When temperature falls it is said that the substance excreted most will be water because a person doesn't sweat in the cold hence the water in the body needs an outlet to escape. However it is also known that the metabolic activities are higher in the cold therefore there ...
9th grade
i need help finding what these words are from these clues: possible opening found in the cell membrane substance which makes up cell walls granular material in the nucleus that thickens to become chromosomes the endoplasmic reticulum is a network of.... structures responsible ...
Biology
I need help with a crossword and I cant figure out what the words are too these clues: Possible opening found in the cell membrane substance which makes up cell walls granular material in the nucleus that thickens to become chromosomes the endoplasmic reticulum is a network of...
health
What healthful alternatives would you recommend to a teen who is thinking about using drugs to deal with stress? Explain the importance of alternatives to substance abuse. please & thank you :)
english
I had to to an exercise on summarizing a paragraph. Can I get an opinion and help revising it. Help me to add what I need and delete what I don't to rewrite it. This below is the summarized paragraph Arizona has become a principal area where drugs are smuggled into the Uni...
stoichiometry
if 5.00g magnesium is combined with 10.0 g of chlorine, show by calculation which substance is the limiting reactant and calculate the theoretical yield of magnesium chloride for the reaction. Someone PLEASE HELP ME!!!!
anatomy/biology
what substance passes through a cell membrane using a solute pump?
Chemistry
Consider the densities of the liquid substances listed. a) How will substance X, a solid, with density of 0.87 g/cm^3, behave when placed in each of the other pure liquids? b) Sketch and label a test tube containing substances A,B,C, and X. Assume that the liquids do not mix o...
Chemistry
Is the following statement true? Explain fully. "Any sample made up of only one substance is homogeneous."
11th grade
what is the density of an 84.7g sample of an unknown substance if the sample occupies 49.6cm3
CRT 205 - fallacies
Can you please identify the fallacies in this article? Are there any rhetorical devices in this article?: My name is Diane Coleman. I have a Juris Doctorate and Masters in Business Administration from the University of California at Los Angeles.... I am the Executive Director ...
CRT 205
Can you please identify the rhetorical devices in this article? Are there any rhetorical devices in this article?: My name is Diane Coleman. I have a Juris Doctorate and Masters in Business Administration from the University of California at Los Angeles.... I am the Executive ...
CRT 205
Are there any rhetorical devices in this article?: My name is Diane Coleman. I have a Juris Doctorate and Masters in Business Administration from the University of California at Los Angeles.... I am the Executive Director of Progress Center for Independent Living in Forest Par...
7th grade
waht is used to mix substances, like a spoon, is two words?
Chemistry
What would the scientific principle be when the purpose of the lab is to learn and practice techniques and calculations for determining volume and density of a substance?
chemistry
Table salt - sodium chloride, one of the most common substances occurring in nature - is best classified as what ?
biochemstry
Which of the following substances serves as an intermediate through which all cellular energy sources are interconvertible? acetyl CoA glucose pyruvate citrate
Math
In the tests of a new pharmaceutical product, data was collected for use in the approval process requied by the U.S. FDA. Some participants were given a placebo, an inert substance that looks like the drug; others were given the drug. The data is shown: No Help Help Drug 22 47...
college
If you have ever poured oil into a glass of water, you have seen that these two substances do not mix. Knowing this, how do lipids move through the body so they can be digested and absorbed? How are lipids stored in the body? Explain your answer.
adult education
I am completing a medical vocab paper. It asked what is the Substance that regulates calcium. what is it?
Science
1.Is molar mass always done for one mol of substance? Let me make up an example: 2H2(g)+O2(g)--> 2H2O When finding molar mas of water would it be 2(2(1.01)+2(16)) or just 2(1.01)+16? 2. I'm not really sure about endergonic exergonic reaction because my teacher is teachi...
calculus
Carbon-14 is a radioactive substance produced in the Earth's atmosphere and then absorbed by plants and animals on the surface of the earth. It has a half-life (the time it takes for half the amount of a sample to decay) of approximately 5730 years. Using this known piece ...
chemistry
Kc = [Na+][Cl-]/[NaCl(s)] The above equation contains the concentration of NaCl in solid NaCl. This concentration is related to the density of solid NaCl and its molar mass. Since the density of NaCl or of any pure solid or pure liquid does not vary with the extent of a reacti...
grade 12 chemistry
Solubility equilibrium: is dynamic equilibrium in a saturated solution between excess solute and aqueous solution(solvent) or between crystals and dissolved solute--> no it has to be crystals and solvent right becuase crystals are basically solute not dissolved yet?? Equili...
11th grade
how to check specific heat of a substance?
psychology
Marla is a 42-year-old Hispanic female who comes to the mental health clinic complaining of trouble sleeping, feeling “jumpy all of the time,” and an inability to concentrate. These symptoms are causing problems for her at work, where she is an accountant. ADHD BIPOL...
psychology
Marla is a 42-year-old Hispanic female who comes to the mental health clinic complaining of trouble sleeping, feeling “jumpy all of the time,” and an inability to concentrate. These symptoms are causing problems for her at work, where she is an accountant. ADHD BIPOL...
chemistry
I had to do this online lab and have a total of 8 questions at the end and I am stuck half way through. Can someone please walk me through the last few question? Here is the Lab and my homework: In this experiment, we will determine the heat of reaction for a neutralization re...
Bio-Chemistry
The process of breaking a complex substance down into smaller components is called what?
science
1) what is the mass of 10 cc of water? 2) why does a block of wood float on water? 3)how and why can density by used to identify an unknown substance? 4) describe the relationship between density, water, an d things that float please help me just need these answers to study fo...
Science
I got the following question wrong on a test "If a substance does not dissolve in water, but dissolves in oil, it is most likely a. polar b. homogeneous c. non-polar d. colloid" (I said A) Now that finals are coming up, I want to know what the answer is to this. Than...
Chem.
Is a substance written HO-C (with a double bond connecting the C to an O north of it)-CH2-CH3 Ethenoic Acid? Thanks!
Chem.
Is the number of branches or carbons more important when determining the boiling point of a substance? I have CH3-CH3 and C3-CH (with a branch leading upward to CH3)-CH3. Thanks for your help.
Chemistry
Are substances with an HO- Alcohols? What about items that are O-C with a O double bonded to the C and above it? Are they acids? Thanks!
Chemistry 101
A student needs to run an experiment to determine the amount of substance in the solution. As more of the substance is dissolved, the more red the solution becomes. He is planning on using an absorption spectrometer to measure how much of a wavelength would be absorbed when pa...
Chemistry please help
Hey guys I did a lab and I have to answer the questions relating to the lab. I did question can someone please check if these are accurate 1. Calculation to Determine the molecular weight of unknown substance Mass of unknown used: 2.0 g Mass of water used: 50.0 g (0.05kg) Kf =...
Chem
I need help setting this up, please. What is the specific heat of a substance if 1560 cal are required to raise the temperature of a 312–g sample by 15ºC
Legal Aspects of Health Information
Judge Jones is hearing a motion to order release of substance abuse records pursuant to a subpoena....Where should the hearing take place/
Chemistry
Ammonium nitrate has been used as high explosive because its unstable & decomposes into several gaseous substances. The rapid expansion of the gaseous substances produces the explosive force. NH4NO3-->N2+O2_H2O Calculate the mass of each product gas if 1.25g of ammonium nit...
Science
Why do non-polar substances tend to boil at relatively low temperatures?
CHemistry
My professor gave us these question in call and we solved for it in class, however im not sure how we got the answers. I dunt really understand the concept of intermolecular forces if some can please help me i have a quiz tomorrow. A. For each pair of substance, identify the k...
science
1.Why is it difficult to get substances in pure form in nature? 2.Name a liquid that is heavier than water and is not miscible in water?
Physics
A portion of an electric circuit connected to a 7 ohm resistor is embedded in 1.20 kg of a solid substance in a calorimeter. The external portion of the circuit is connected to a 100 volt power supply. (a) Assuming that all the heat generated by the resistor is absorbed by the...
chemistry
At a low pressure and a high temperature, what state of a substance is most likely to exist? Gas Liquid Solid
Chemistry
Can someones please check my work? 1. Why does a liquid take the shape of whatever container it is in but does not expand to fill the container completely? A: It takes the shape of its contaienr because its particles can slip past each other. but it has fixed volume and does n...
Science (URGENT)
Can someones please check my work? 1. Why does a liquid take the shape of whatever container it is in but does not expand to fill the container completely? A: It takes the shape of its contaienr because its particles can slip past each other. but it has fixed volume and does n...
Medical
The main criterion for drugs classified as controlled substances is their level of?
Science (urgent)
Suppose 13.7kJ of heat are removed from 33.5g liquid sample of ethanol at 26.8^oC. When all this heatis removed from the substance, at what temperature and in what states will you find the substance?
Chemistry
If 395.3 g of a substance is dissolved in 872.6 g of cyclohexane solvent, the boiling point of the solution is 87.38 oC. Calculate the apparent molar mass (g/mol) of substance.
Chemistry
What is the difference between the substance oxidized and the oxidizing agent?
history
choose one problem in your community that troubles you--for exampple, homelessness, air or water pollution, substance abuse, or toxic waste disposal. Discuss the problem with famiy, friends, and neighbors to get ideas for dealing with it. Write a one-page proposal for a volunt...
college chemistry - molarity question
My textbook doesn't show me how to do problems like the following, and I'm having a hard time finding similar problems online. Most of the molarity problems I'm finding involve mixing a substance with water, but these involve mixing moles of substances with moles o...
Science
If some substance has a ph of 8, is it a base or is it neutral? I know that a ph of 7 is neutral, so is 8 also neutral since it's in the middle?
chemistry need help
Contrast ionic and molecular substances in terms of the types of attractive forces that govern their behavior.
chemistry
Contrast ionic and molecular substance in terms of the type of attractive forces that govern their behavior.
chemistry need help
A fellow student say , " All substance experience London disperison forces of attraction between particle." Is this etatement true? Explain your answer
pre lab Q on chromatography
suppose that there are two components, A and B, in a mixture. The chemical affinity of A for the stationary pahse is less than that of B and the chemical affinity of A for the mobile phase is greater than that of B. If the mixture is subjected to paper chromatography, which su...
Science ; Micro-organisms
i have to finished this cross word , and i need help on the last two . So thank you if you can solve it :) A substance that micro organisms can be grown on . its a 4 letter word. A group Of Micro Organisms , its a 6 letter word.
chemistry
How do you calculate the pH when the following substances are added to a buffer.(all of the solutions are at .10M conc.) The buffer: 50mL NH3 + 50mL NH4NO3 1) 10mL buffer + 6mL water 2)10mL buffer + 5mL water +1mL HCl 3)10mL buffer + 6mL HCl 4)10mL buffer + 5mL water + 1mL NaO...
college chemistry
How do you calculate the pH when the following substances are added to a buffer.(all of the solutions are at .10M conc.) The buffer: 50mL NH3 + 50mL NH4NO3 1) 10mL buffer + 6mL water 2)10mL buffer + 5mL water +1mL HCl 3)10mL buffer + 6mL HCl 4)10mL buffer + 5mL water + 1mL NaO...
college chemistry
How do you calculate the pH difference when the following substances are added to a buffer.(all of the solutions are at .10M conc.) The buffer: 50mL NH3 + 50mL NH4NO3 1) 10mL buffer + 6mL water 2)10mL buffer + 5mL water +1mL HCl 3)10mL buffer + 6mL HCl 4)10mL buffer + 5mL wate...
ciminology
Monday 04/13/09 Need help with this.. based on someone's experience with these procedures. Post a 175- to 350-word response restating the events in the proper order. Answer this question as part of your response: 1.) what sources were the rights afforded this individual de...
Science
A scientist needs to take a picture of the well-ordered arrangements of the atoms and molecules within a substance. What instrument would be best for a scientist to use?
Astronomy
The latent heat of melting is the amount of energy needed to convert a solid substance at its melting temper- ature to a liquid at the same temperature. For typical volcanic rocks, the latent heat of melting is around 5×105 J/kg, which means it takes 5×105 J to tur...
stats ?
There are 5 situations below. Can someone please match the situations up with the threat. These would be in a quasi-experimental design. The threats are history, maturation, mortality, testing, and instrumentation threat. THANK YOU! A.Kindergarten students who were identified ...
stats ?
There are 5 situations below. Can someone please match the situations up with the threat. These would be in a quasi-experimental design. The threats are history, maturation, mortality, testing, and instrumentation threat. THANK YOU! A.Kindergarten students who were identified ...
STATS ?
There are 5 situations below. Can someone please match the situations up with the threat. These would be in a quasi-experimental design. The threats are history, maturation, mortality, testing, and instrumentation threat. THANK YOU! A.Kindergarten students who were identified ...
stats ?
There are 5 situations below. Can someone please match the situations up with the threat. These would be in a quasi-experimental design. The threats are history, maturation, mortality, testing, and instrumentation threat. THANK YOU! A. Kindergarten students who were identified...
science
Which statement best explains why dating geologic materials from the Quarternary Period uses a different radioactive isotope than for materials from the cambrian Period? a. all rocks contain radioactive substances. b. some isotopes decay faster than others. c. not all isotopes...
chemistry
The densities of the liquid and solid states of a substance are often similar. Explain.
psychology
1 which statement most accurately differentiates substance dependence from substance abuse? A substance dependence involves ongoing use of a drug despite the problems it causes in the person's functioning. B With substance dependence, the individual uses the drug daily C s...
Chemistry
Suppose 1.0 mol of substance A reacts with 1.0 mol of substance B. to produce 2.0 mol of substance C. In a reaction, 2.4 mol of substance A is allowed to react with 2.1 mol of substance B. What amount in moles of substance c is produced?
8th Grade Science
If we say that gold has a density of 19.32 g/ml, at what temperature is this substance?
math
if the rate for radioactive decay for a substance is r=-.0063 and time is being measured in days how do you find the half-life of the substance to the nearest hour?
Physics
what is the relationship between specific heat capacity and conduction? if an substance has a higher heat capacity is it a better heat conductor?
body systems/terminology
Human blood, which has a pH of approximately 7.4, is a/an _______ substance. A. neutral C. basic B. acidic D. alkaline The body maintains a pH of 7.5, and human blood has a normal range between 7.35 to 7.45—almost neutral. Numbers below 7 are increasingly acidic, and numb...
chemistry help
Determine the empirical formula for each substance. 1. A dead alkaline battery is found to contain a compund of Mn and O. Its analysis gives 69.6% Mn and 30.4% O. 2. A compound is 38.77% Cl and 61.23 %O. 3. Magnetic iron oxide is 72.4 % iron and 27.6% oxygen.
Physics
Find the angle of refraction if there is one. If there isn't, tell which substance reflects the light: n=1.36 ~~~~~~~~~~~Angle=15.60 degrees n=1.73 ~~~~~~~~~~~Angle=17.94 degrees n=1.51 ~~~~~~~~~~~Angle=27.71 degrees n=1.0003 ~~~~~~~~~~~Angle=11.08 degrees n=2.42 ~~~~~~~~~...
Chemistry
Decide which of the substances listed can form hydrogen bonds? H20 H2O2 HF NH3 NaF H2 NO CH4
chemistry
Which substances in each of the following pairs would have the greater entropy? Explain. (a) at 75°C and 1 atm: 1 mol H2O(l) or 1 mol H2O(g) (b) at 5°C and 1 atm: 50.0 g Fe(s) or 0.80 mol Fe(s) (c) 1 mol Br2(l,1 atm, 8°C) or 1 mol Br2(s, 1 atm, -8°C) (d) 0.312 ...
chemistry
intermolecular forces Rank the following substance from highest melting point to lowest melting point. My teacher gave a list of compounds: H2O, NO2,F2,CI2 and to have a high melting point means that you need a stronger IMF. Rank the following substances from highest freezing ...
chemistry
um, i was wondering what the word is for a substance composed of two or more elements that are chemically combined to form a new substance with different properties. um, i kinda need the answer soon. thanx. :) Kenzie
chemistry
nitrogen and hydrogen react in the haber process to form ammonia. All substances are in the gas phase. If 0.385atm of nitrogen and 0.792 atm of hydrogen react, what is the partial pressure of ammonia(in mmHg) when this reaction goes 67 complete. The volume and temperature are ...
business
I need help with my peer review What is the main point of this essay? What is the greatest strength of this essay? Does the introduction grab your interest and make you want to read on? Explain your answer. What material does not seem to fit the main point of the essay or does...
business
I need help with peer review. I am not good at doing the reviews. Healthy Foods and Its Benefits It is commonly known that there are foods that improve health when eaten. It is almost equally known that there are also foods that can drastically affect the body negatively if no...
Chem
Describe the 6 changes of state that substances might undergo in terms of appearance and energy transfer.
Chemistry
Which of the following species is the strongest oxidizing agent under standard state conditions? a. Ag+(aq) b. H2(g) c. H+(aq) d. Cl2(g) e. Al3+(aq) An oxidizing agent is a substance that gains electrons in a redox chemical reaction. I think Al3+ has a very high electron affin...
chemistry
In the following half equation, which is the oxidizing agent? NO3–(aq) + 4H+(aq) + 3e– <--> NO(g) + 2H2O a. NO3– b. H+ c. e– d. NO e. H2O An oxidizing agent is a chemical compound that readily transfers oxygen atoms, or is a substance that gains elect...
Chemistry
A student observed the following reaction: AlCl3(aq)+3NaOH(aq) -> Al(OH)3(s)+3NaCl(aq) After the products were filtered, which substances remained on the filter paper and why?
Calculus-Modeling Equations
An unknown radioactive element decays into non-radioactive substances. In 420 days the radioactivity of a sample decreases by 39 percent. 1.What is the half-life of the element? 2.How long will it take for a sample of 100 mg to decay to 46 mg?
chemistry
ok im confused would ionic or covalent substances be more "dangerous" near an open flame? and why would they be more dangerous?
chemistry
would ionic or covalent substances be more dangerous near an open flame? why?
Culinary Arts...HELP!!
Okay. sooo...i know that if you add flour to a substance it thickens up.But what can you add to a substance to thin it out (other than water...)
Identify the substance
There was a substance I used in a lab for chem class and I`m not too sure what it was. They were tiny white balls about a millimeter in diameter. What would they be?
Chem
Is sugar an ionic, a molecular or a network convalent substance?
Chem
There was this substance we used in a lab and I'm not quite sure what it is. It was a clearish, flaky, solid. It was brittle and insoluable in water. Does anyone know what it could be?
Chemistry
Question: Consider following equilibrium system: SO2(g)+ Cl2(g) goes to So2Cl2(g) Kp=.900 atm @25 degree C. Suppose that 2.0 moles S02, 1.0 moles Cl2, and 3.0 moles So2Cl2 are placed in an empty 4.00L vessel at 25 degree C. Compute teh number of grams of each substance present...
chemistry
Two solutions are prepared. In Solution A, 5.0 g of a substance of molecular weight 50 is dissolved in 100 mL of pure water. In Solution B, 5.0 g of a substance with molecular weight of 75 is dissolved in 100 mL of pure water. The solute is non volatile and non ionic. Which so...
Chemistry
I did an experiment to determine the freezing point depression and then find the molecular weight of the unknown solute added to the solvent, what would be the effect on calculating the molecular weight if some cyclohexane(my solvent) evaporated while the freezing point of the...
health
what are chemical substances artificially produced in a laboratory?
Chemistry
Why is "pure orange juice" not a pure substance?
science
what substances dissolve in water?
Pages: 1 | 2 | 3 | 4 | 5 | Next>> Post a New Question | Current Questions
Homework Help: Health
For Further Reading
|
