Friday
April 18, 2014

Homework Help: Health: Substance Abuse

Recent Homework Questions About Substance Abuse

Post a New Question | Current Questions

math
what is the specific gravity of a substance that has a density of 1.59 g/cm3? A. 1.59 g/mL B. 1.59 g C. 1.59 D. 1.59 mL I think B.
Wednesday, November 7, 2012 at 3:17pm

science
what property must a substance have if you want to use the substance to make an aqueous solution
Tuesday, November 6, 2012 at 5:41pm

science
The density of a substance with a mass of 90g is 2 g/cm cubed. What is the volume?
Tuesday, November 6, 2012 at 11:04am

Chemistry HELP ASAP
A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance. If the sample is paramagnetic, the mass reading of the balance will increase when the field is switched on. Based on ...
Monday, November 5, 2012 at 11:45am

Chemistry
#4. Ths oxidizing agent is the substance reduced. The reducing agent is the substance oxidized. Na is the reducing agent and it is oxidized. Au^3+ is the oxidizing agent and it is reduced.
Monday, November 5, 2012 at 12:50am

Chemistry
A Gouy balance is used to determine the magnetic susceptibility of a substance. A strong electromagnet is placed next to the sample, which is on a balance. If the sample is paramagnetic, the mass reading of the balance will increase when the field is switched on. Based on ...
Sunday, November 4, 2012 at 10:24pm

biochemistry
Enzyme X is a highly pigmented protein that imparts the characteristic color to certain blue-green algae. It also facilitates a reaction necessary to the survival of this species; we can follow the kinetics of this reaction by measuring the conversion of Substance X to ...
Saturday, November 3, 2012 at 9:01am

biochemistry
Enzyme X is a highly pigmented protein that imparts the characteristic color to certain blue-green algae. It also facilitates a reaction necessary to the survival of this species; we can follow the kinetics of this reaction by measuring the conversion of Substance X to ...
Friday, November 2, 2012 at 6:03am

7th grade health please Ms. Sue?
Hi! Sorry, I don't know what subjects you teach, but can you check my answers please? 1. Starches and sugars that provide energy (1 point) kidneys enzymes carbohydrates vitamins 2. The system that removes waste from the body and controls the body's water levels (1 ...
Wednesday, October 31, 2012 at 7:32pm

Chemistry
You have amisture that is 0.100mol/L in each of the following ions: Cl-, Br-, and I-. (a) Which substance will precipitate first? AgCl, AgBr, AgI? (b)what is the concentration of Ag+ required to start the precipitation of the first substance? ksp (AgCl)= 1.77*10^-10 ksp (AgBr...
Monday, October 29, 2012 at 12:25pm

chem
I think you understand but I need to correct a slight misstatement. It isn't the element or ion that is insoluble; as you can see Ag^+ is soluble when in combination with some anions (AgNO3 etc) and CO3^2- is soluble with many cations (Na2CO3, K2CO3, etc). It's the ...
Sunday, October 28, 2012 at 3:45pm

Chemistry - Final Temperature
q = mass substance x specific heat x (Tfinal-Tinitial)
Sunday, October 28, 2012 at 2:32pm

physical science
A substance whose 0xidation number decreases during a chemical reaction
Sunday, October 28, 2012 at 8:35am

Chemistry - Final Temperature
An unknown mass of each of the following substances, initially at 23.0C, absorbs 1910 J of heat. The final temperature is recorded as indicated. Find the mass of each substance. sand (Tf=62.0C) ethanol (Tf=44.1C) water (Tf=32.1C)
Sunday, October 28, 2012 at 8:11am

Science Asap
As a substance is heated from its liquid phase to its gas phase, what happens to the spacing and speed of its molecules? Thank You for helping.
Saturday, October 27, 2012 at 2:08pm

Chemistry
Calcium carbonate can be used as an antacid to treat excess stomach acidity. What type of substance is calcium carbonate? a. base b. reducing agent c. acid d. buffer
Tuesday, October 23, 2012 at 7:07pm

Chemistry
Which of the following best describes the difference between a mixture and a pure substance? A. A mixture is made up of more than one type of atom; a pure substance is made up of only one type of atom. B. A mixture has the same properties throughout; a pure substance has the ...
Tuesday, October 23, 2012 at 6:48pm

Chemistry
What property must a substance have if u want to use the substance to make an aqueous solution? Grade- 9
Sunday, October 21, 2012 at 1:49am

Chemistry
What property must a substance have if u want to use the substance to make an aqueous solution? Thank you
Sunday, October 21, 2012 at 1:35am

CHEM
Silicon carbide, commonly known as carborundum, is a very hard and abrasive substance. The compound is prepared by heating silicon dioxide in the presence of graphitic carbon: SiO2(s) + 2C(s) --> SiC(s) + CO2(g) How many grams of silicon carbide can be formed from 55.0 g of...
Thursday, October 18, 2012 at 6:09pm

chemistry
c. A student put 1.18 mole of substance A and and 2.85 mole of substance B into a 10 litre flask which was then closed. The reaction that took place was: A(g)+ 2B(g) 3C(g) + D(g) On analysis the equilibrium mixture at 25 0 C was found to contain 0.376mole of D. Calculate Kc ...
Wednesday, October 17, 2012 at 1:38am

chemistry
Which solvent is more preferential? Solubility of a substance: water- 2.0g/100ml or ether- 6.3g/100ml
Monday, October 15, 2012 at 8:17pm

chemistry
Ratio of what? Ratio of mols of one to mols of another. The coefficients in the balanced equation does all of that for you. In this equation, 2 mols C6H6 = 15 mol O2 = 12 mols CO2 = 6 mols H2O. So you can convert from mols of one substance to mols of another easily. For ...
Monday, October 15, 2012 at 4:11pm

science
substance a has a boiling point of 80% C and a density of 3.5 g/cc what is it and why
Thursday, October 11, 2012 at 5:57pm

AP Environmental Science
Consider the following heats, copper: 0.384J/g degrees, glass:0.502J/g degrees, water: 4.18J/g degrees, and lead:0.159J/g. Which substance once warmed, would be more likely to maintain its heat and keep you warm through a long party on a cold night?
Wednesday, October 10, 2012 at 4:31pm

Chemistry
An unknown substance has a mass of 16.3 g. The temperature of the substance increases by 20.1 degrees Celsius when 126 J of heat is added to the substance. What is the most likely identity of the substance? The table lists the specific heat capacities of select substances. ...
Tuesday, October 9, 2012 at 11:18pm

Intro to Physical Science
it a substance that their molecurle can be identified
Friday, October 5, 2012 at 4:23pm

chemistry
A 0.0230 g sample of an unknown was dissolved in 2.260 g of benzene. The molality of this solution, determined by freezing point depression, was 0.0408 m. What is the molecular weight of the unknow substance?
Thursday, October 4, 2012 at 11:23pm

Science
1.If you drive a car, you're utilizing the potential energy stored in octane molecules to move your vehicle. If you made toast this morning, you oxidized the surface of the bread. If you watch color TV, the colors on the screen are due to electrons being excited by high-...
Thursday, October 4, 2012 at 9:09pm

chemistry
Why is gas a chemical reaction not detectable by sight? Explain? my answer is because the atoms or molecules of matter in the gaseous state move freely among each other, and are, in most instances, packed more loosely than the molecules of the same substance in the solid or ...
Thursday, October 4, 2012 at 4:47pm

chemistry
Mass the amount of a substance.
Thursday, October 4, 2012 at 4:41pm

Organic chemistry recrystallization
Say you have a substance X will .5 g of X dissolve in 5.0 ml of water if boiled at 80 degrees? And at what temperature will crystals begin to form?
Thursday, October 4, 2012 at 1:01am

General Chemistry
Change these word equations into formula equations and balance them. Be sure to use the proper symbols to indicate the state of each substance as given. (a) Magnesium metal is placed into hydrobromic acid solution, forming hydrogen gas and aqueous magnesium bromide. (b) When ...
Wednesday, October 3, 2012 at 10:11am

Physical Science
8 letter word for a substance that can be broken down into two or more simpler substances?
Tuesday, October 2, 2012 at 11:45pm

Chemistry
A 5.00L reaction vessel contains hydrogen at a partial pressure of 0.588atm and oxygen gas at a partial pressure of 0.302atm. The equation is 2H2(g)+O2(g)-> 2H2O(g). Suppose the gas mixture is ignited and the reaction produces the theoretical yield of the product. What ...
Tuesday, October 2, 2012 at 7:50pm

education
During the middle of the twentieth century, North American psychology was dominated by A. evolutionary theory. C. neuroscience. B. cognitive development. D. behaviorism. What is a major limitation of the psychophysiological method? A. Investigators can’t be sure that an ...
Monday, October 1, 2012 at 5:36pm

chemistry
A compound has the empirical formula CH2O. When 0.0866 g is dissolved in 1.0 g of ether, the solution’s boiling pint is 36.5oC. Determine the molecular formula of this substance
Monday, October 1, 2012 at 7:04am

chemistry
Calculate the molar mass of a non-electrolyte that lowers the freezing point of 25.0 g of water to - 3.9 oC when 4.27 g of the substance is dissolved in the water.
Monday, October 1, 2012 at 7:02am

chemistry
1.) a buffer is a substance which: a) donates H+ in acidic solutions b) accepts H+ in basic solutions c) accepts OH- in basic solution d) donates H+ in basic solution e) donates OH- in acidic solution f) accepts H+ in acid solution g) accepts OH- in acid solution h) donates OH...
Sunday, September 30, 2012 at 8:25pm

chemistry
a substance has a vapor pressure of 35.0 mmHg at 52.0 degrees Celsius and 70.0 mm Hg at 77.0 degrees Celsius. What is the heat of vaporization for this substance?
Sunday, September 30, 2012 at 5:57pm

Biology
1. How is both the external adn internal stimuli involved in doing this: You are hungry so you reach for an apple in a fruit bowl. 2. Why is a hypothesis important to controlled experiments? Is it becasue you are trying to explain the effect that it would have to a substance ...
Thursday, September 27, 2012 at 8:45pm

education
During the middle of the twentieth century, North American psychology was dominated by A. evolutionary theory. C. neuroscience. B. cognitive development. D. behaviorism. 8. What is a major limitation of the psychophysiological method? A. Investigators can’t be sure that ...
Thursday, September 27, 2012 at 6:32pm

Chemistry
Calculate the density of a substance in pennyweights per peck that has a volume of 0.371 hogsheads and a mass of 41.6 kg. 1 pennyweight = 1.55 grams 1 hogshead = 238.5 liters 1 peck = 9.091 liters. Answer in units of pw/pk.
Thursday, September 27, 2012 at 11:23am

chemistry
a buffer is a substance which? a) accepts OH- in basic solution b) accepts H+ in acid solutions
Wednesday, September 26, 2012 at 9:40pm

physicalscience
(HELP ME)a secientist has two samples of a substance.both samples have the same temperature.one sample has a mass of 10g. the other sample has a mass of 20g. compare the average kinetic energy and total kinetic energy of the particles ineach sample.
Monday, September 24, 2012 at 12:18pm

Chemistry
Which cannot be broken down chemically or physically into a simpler substance between sugar, salt, seawater, and copper?
Thursday, September 20, 2012 at 2:07pm

Chemistry
Which cannot be broken down chemically or physically into a simpler substance between sugar, salt, seawater, and copper?
Thursday, September 20, 2012 at 2:03pm

chemistry
big hint: Reactions go to completion for one of three reasons. a. a gas is formed. b. a precipitate is formed. c. a slightly ionized substance is formed.
Wednesday, September 19, 2012 at 8:43pm

Chemistry
2) To the solution in problem 1 (d) at 100 degrees celsius, 10g of water are added, and the solution is cooled to 0 degrees celsius... (problem 1d: the number of grams of water required to dissolve a mixture containing 15 g KNO3 and 3.5 g CuSO4 * 5 H20, assuming that the ...
Tuesday, September 18, 2012 at 9:50pm

science
I need a little assistance. Can you help? The question which seems to be simple enough is What is a physical change? My son answered - A physical change is any change that alters the form or appearance of matter into a different substance. I do not agree. He is missing ...
Monday, September 17, 2012 at 10:57pm

statistics
Each year, approximately 160 colleges compete in the National Concrete Canoe Competition. Each team must design a seaworthy canoe from a substance not know for it's capacity to float. The canoes must weigh between 100 and 350 pounds. Find the midrange weight.
Sunday, September 16, 2012 at 9:44am

Chemistry
How can you predict the heat of combustion for a substance with no carbon atoms?
Thursday, September 13, 2012 at 8:37pm

science
the controls are the substance. material in the experiment that stays constant and doesn't change while. the variable is the object compared to the control which varies in results and can change through out the course of the experiment.
Thursday, September 13, 2012 at 7:12pm

chemistry
Ethanethiol (CH3CH2SH, pKa=10.6) was named the smelliest substance in existence. Draw the equilibrium that forms when ethanethiol is added to a solution buffered at pH 9, and show the relative proportions of all organic species.
Wednesday, September 12, 2012 at 11:39pm

Science
Since this is not my area of expertise, I searched Google under the key words "substance inside the guard cells" to get these possible sources: (Broken Link Removed) In the future, you can find the information you desire more quickly, if you use appropriate key words...
Tuesday, September 11, 2012 at 1:10pm

chemistry
The speed of a substance is 13.056 m/s. What is the speed in cm/Ms??
Tuesday, September 11, 2012 at 12:47pm

CHEMISTRY HELP ASAP!
is it possible for one molecule of salicylic acid to form an ester with a second molecule of the same substance? Use equations and/or structures. Please help, i am pretty sure it couldn't because of steric hindrance, however i am not sure how to explain this further and ...
Tuesday, September 11, 2012 at 6:23am

chemistry (need asap!)
is it possible for one molecule of salicylic acid to form an ester with a second molecule of the same substance? Use equations and/or structures. Please help, i am pretty sure it couldn't because of steric hindrance, however i am not sure how to explain this further and ...
Tuesday, September 11, 2012 at 4:13am

Science
What is the substance inside the guard cells?
Monday, September 10, 2012 at 5:46pm

chemistry
density = mass/volume Specific gravity is the same number (but no units) if you assume density of H2O = 1.00 g/mL. If you know the density of H2O at room T (I don't know what you're calling room T) then sp.g. = density substance @ T/density H2O at same T.
Sunday, September 9, 2012 at 11:39pm

chemistry
what is the density of a substance if a 2.50 ml sample has a mass of 0.880g at room temperature? what is the specific gravity of the substance?
Sunday, September 9, 2012 at 11:25pm

chemistry
c= q/m*(delta)T q= heat or energy, measured in joules (J) c= specific heat of the substance m= mass of substance (delta)T= change in temperature It requires 14,749 J to heat 75.0 g of water from 20.0 degrees C to 67.0 degrees C?
Sunday, September 9, 2012 at 4:59pm

Heat Transfer
Conduction is the transfer of energy from the more energetic particles of a substance to the adjacent less energetic ones as a result of interactions between the particles. Conduction can take place in solids, liquids, or gases. In gases and liquids conduction is due to the ...
Friday, September 7, 2012 at 2:01am

chemistry
What is the density of a substance that weighs 500g and fills a container that is 1/2 liter in size?
Thursday, September 6, 2012 at 7:57am

POl
An inactive substance or simulated medical procedure is called a
Sunday, September 2, 2012 at 6:39pm

Scientific method (Incomplete)
What people? What farm? What is the hypothesis? Maybe this information might help. An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable. A dependent variable is the ...
Saturday, September 1, 2012 at 3:23am

substance abuse couseling
Process 1.Prewrite about your field of study and create a specific job for which you might want to apply at a particular business or organization in your area.Outline what that position would look like.Brainstorm details,names,titles,and facts to provide depth to your ...
Wednesday, August 29, 2012 at 5:17pm

Math
Find the half-life (in hours) of a radioactive substance that is reduced by 10 percent in 5 hours.
Tuesday, August 28, 2012 at 6:58pm

Chemisty
The average human body has 1.4x10^2 g of total K within it. Calculate the activity in disintegration/year of the potassium-40 in the average human body using your value of t1/2 (or K) of this substance
Thursday, August 23, 2012 at 7:18pm

chemistry
The average human body has 1.4x10^2 g of total K within it. Calculate the activity in disintegration/year of the potassium-40 in the average human body using your value of t1/2 (or K) of this substance
Wednesday, August 22, 2012 at 11:41pm

PHI 103
Grading Summary These are the automatically computed results of your exam. Grades for essay questions, and comments from your instructor, are in the "Details" section below. Date Taken: 8/17/2012 Time Spent: 25 min , 48 secs Points Received: 10 / 10 (100%) Question ...
Friday, August 17, 2012 at 9:22am

chemistry
On the pH scale, any substance with a value between 8 and 14 is considered _________.
Tuesday, August 14, 2012 at 2:58pm

chemistry
Calculate the following quantities. (See the periodic table.) (a) mass, in grams, of 2.54 10-2 mol of CdS g (b) number of moles of NH4Cl in 90.0 g of this substance mol (c) number of molecules in 5.081 10-2 mol C6H6 molecules (d) number of O atoms in 4.72 10-3 mol Al(NO3)3
Thursday, August 2, 2012 at 12:17am

chemistry
No, the material you name as the reducing agent can't be two different materials. The substance oxidized is the one that loses electrons and the substance reduced is the one that gains electrons. The oxidizing agent is the one reduced. The reducing agent is the one ...
Tuesday, July 24, 2012 at 8:33pm

science
what shows that the sea water is a mixture and not a pure substance? a. it has a sharp boiling point b. it has definite composition c. it consist of a single phase d. the components lose their individual properties
Tuesday, July 24, 2012 at 8:07pm

chemistry
i had 2 question left to finish but i cant really undersdand how to do it 9)design an elextrochemical cell using Pb(s) and Mn(s) and theire solutions and answer the following questions: i answerd a-i all that is left is j which is: indicate the substance oxidise,substance ...
Tuesday, July 24, 2012 at 6:09pm

psychology
This should start your project: Ho: Violent programs on TV have no effect on viewer aggression. Ha: Violent programs on TV increase viewer aggression. An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also...
Tuesday, July 24, 2012 at 10:38am

Chem
suppose you could not tell whether a material was insoluble or slightly soluble in water form the appearance of the misture. Explain what you would do to determine whether this substance is slightly soluble.
Monday, July 23, 2012 at 4:32pm

art
Contrast Tintoretto’s The Last Supper with Leonardo’s Last Supper. In your post, include the differences in media as well as thematic substance.
Wednesday, July 18, 2012 at 1:17pm

chemistry
3) The melting point range of an unknown substance was determined to be 120-180 degree celcius. what can you tell about the purity of the unknown
Wednesday, July 18, 2012 at 6:29am

Sociology
Similar, but not as certain. An implication is a conclusion that can be drawn, but it is not explicitly stated. It is a "likely" consequence. And of course, the "likely" is where folks of various opinions will differ. For instance, the implication of ...
Wednesday, July 18, 2012 at 4:12am

Physica
Resistivity ( ρ )doesn’t depend on the length and area; it depends on the properties of the substance and temperature. Resistance depends on ρ, L, and A as R1= ρ •L/A R2=ρ•2L/(A/2)=4 •ρ•L/A=4•R1
Monday, July 16, 2012 at 1:56pm

Science
What fraction of the original activity of a radioactive substance will remain at the end of half-life?
Monday, July 16, 2012 at 4:50am

science
what substance is being reduced in the following redox reaction? HgCl2 + Sn^2 = Sn^4 + Hg2Cl2 + Cl-
Friday, June 29, 2012 at 9:20pm

Chemistry
An impure sample of substance X melts at about 113 degress. Which of the substances could be X and state y Resorcinal 111 degrees Catechol 105 Nitrophenol 114 Butanamide 115 I think it is either catechol or resorcinol because as stated the higher the percentage of impurity the...
Tuesday, June 26, 2012 at 7:41pm

Physics
The pressure-volume graph shows an engine cycle where the working substance is an ideal monatomic gas (γ = 5/3). The process A-B is adiabatic. At point A, the pressure is 2.70×105 Pa and the volume is 0.0180 m3. At point B, the volume is 0.0450 m3. During a cycle, ...
Monday, June 25, 2012 at 11:18am

Chemistry(check)
Please check for me. 1. For the reaction CH3COOH--->CH3COO + H+, which of the following statements is true? CH3COOH is a Brønsted-Lowry acid.<--- CH3COO is an Arrhenius base. CH3COO is a Lewis base. CH3COOH is a Brønsted-Lowry base. 2. Of the metals Pb, Mg...
Friday, June 22, 2012 at 5:29pm

chemistry
Specific Heat= (quantity of heat trandferred in Joules) / (mass of substance in grams) * (temperature change)
Thursday, June 21, 2012 at 9:15pm

Chemistry
A calorimeter contains 30.0 mL of water at 11.0 degrees C. When 1.50 g of X (a substance with a molar mass of 65.0 g/mol) is added, it dissolves via the reaction: X (s)+H2O (l) ---> X (aq) and the temperature of the solution increases to 26.0 degrees C. Calculate the ...
Thursday, June 21, 2012 at 9:00pm

Chemistry(Please Respond)
Willsomeone, please check my answers? (<-----) indicates my answer. 1.A student increases the temperature of a 556 cm³ balloon from 278 K to 308 K. Assuming constant pressure, what should the new volume of the balloon be? 320 cm3 501 cm3 1232 cm3 616 cm3<------ 2. ...
Thursday, June 21, 2012 at 8:10am

Chem(Check Please)
Will someone please check my answers for me? I put arrows(<----) to indicate my answer. Thank you in advance. 1.A student increases the temperature of a 556 cm³ balloon from 278 K to 308 K. Assuming constant pressure, what should the new volume of the balloon be? 320 ...
Thursday, June 21, 2012 at 1:32am

English
Marijuana sounds like a good topic. You should take a position on it. Which of these positions do you want to take in your essay? It's not harmful and should be legalized. It is harmful and leads to further substance abuse. Medical marijuana should be easily accessible to ...
Friday, June 15, 2012 at 12:36pm

english
I'm writing an essay on Substance Abuse. Its an informative essay and I am having trouble coming up with a topic. Can you please give me some suggestions? I am leaning towards something to do with marijuana possibly...
Friday, June 15, 2012 at 12:28pm

chemistry
A substance placed in a container has a fixed volume and takes up the shape of the container. In which state does this substance exist?
Wednesday, June 13, 2012 at 11:50am

Art
Thank you, Writeacher. Here is the last part of the same summary. Could you please check it? 1) The names of the ingredients are reported using an international code, INCI which is the same for all EU countries though it is also used in other countries, for example USA, Russia...
Saturday, June 9, 2012 at 5:09pm

Chemistry
Iodine pentafluoride is an incendiary agent, a substance that ignites combustible materials. This compound is usually made by passing fluorine gas over solid iodine, but it also forms when iodine monofluoride changes into the element iodine and iodine pentafluoride. (a) Write ...
Saturday, June 9, 2012 at 2:08pm

Chemistry
Physical properties: Properties that describe the look or feel of a substance. Examples: * Color * Hardness - lead is soft * Density * Texture * Shape * Size * Phase (solid, liquid, gas) Choose 5 of those and look at a pencil. Chemical properties: Properties that relate to the...
Wednesday, June 6, 2012 at 12:20pm

PHYSICS
1. A 500.0 g metal block absorbs 1.125 × 104 J of heat to raise its temperature by 50.0 K. What is the substance?
Tuesday, June 5, 2012 at 9:31pm

Math
You are talking about a radioactive substance-- one that emits radiation-- NOT a radio. The annual decay rate is what you multiply the number of radioactive atoms by to get the decay rate, k, in atoms per year. See http://hyperphysics.phy-astr.gsu.edu/hba​se/nuclear/...
Tuesday, June 5, 2012 at 3:57am

Math
A radio substance has a half-life of 10 years. What is its annual decay rate?
Tuesday, June 5, 2012 at 3:46am

Pages: <<Prev | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>

Post a New Question | Current Questions

Homework Help: Health

Search
Members