Tuesday
August 30, 2016

Homework Help: Health: Substance Abuse

Recent Homework Questions About Substance Abuse

Fluid Mechanics
A cylinder with internal diameter of 5cm and 15 cm high is filled up with an unknown substance. The mass of the cylinder is 4.6 kg which is 300% of the unknown substance mass. Determine the density and the specific gravity of the unknown substance.
Sunday, September 21, 2014 by Lara

chemistry
the temperature of a substance ____ as its heat of fusion is added to melt the substance A. increases B. decreases C. remains constant D. fluctuates from rapid increases and decreases I think it's C
Tuesday, September 16, 2014 by Hideko

chemistry
25. Which of the two reactions, A or B is a neutralization reaction? Explain why. A. HBr + H2O = Br- = H3O+ B. HClO + NaOH = NaClO + H2O 26. A. Look at the reaction again. when this reaction is reversed. Br- + H3O+ = HBr = H2O what substance is the acid, what is the base. B. ...
Tuesday, September 16, 2014 by Sierra

Grade 9 Science
In each situation s below , it seems that a new substance may have been produced. Explain why each situation represents a physical change. a) A tailor makes a new suit out of a piece of fabric. b) A chef makes a salad out of lettuce, tomatoes and cucumbers. I really need ...
Sunday, September 14, 2014 by Sally

chemistry
The temperature of a substance ____ as its heat of fusion is added to melt the substance A. increases B. decreases C. remains constant D. fluctuates from rapid increases and decreases
Sunday, September 14, 2014 by Emiko

Veterinarian assisted
1. In the __________, an animal patient's hair is clipped and its skin is scrubbed to prepare for surgery.  A. hospital ward  B. surgical suite  C. treatment area  D. grooming area  2. Supervision of the treatment area is usually the responsibility...
Friday, September 12, 2014 by Jessica

Physical science
Give one word or term of the following descriptions 1. A reaction that results in the formation of an insoluble salt 2.the process in which ions whithin an ionic substance are separated 3.the positive ion 4.a proton acceptor
Wednesday, September 10, 2014 by Plz help

Math
1. If one wishes to accumulate a Php 30,000-fund in 5 years, how much should he deposit now at 18% compounded quarterly? 2. If a bank offers a rate of 4.5% compounded semiannually, how much should you deposit to accumulate Php 50,000 in 15 years 3. Suppose that a particular ...
Tuesday, September 9, 2014 by Isabelle

chemistry
Use chemical formulas to generate the stoichiometric factor needed to express the results of a gravimetric analysis in terms of the substance on the left if the weighting form is the substance on the right: Sought Weighted I Mg Mg2P2O7 II UO2 U3O6
Tuesday, September 9, 2014 by lakshmi

chemistry
at a temperature of 5 celsius, 21.5 mg of a non electrolyte is dissolved in enough water to make a 150.0 ml solution. the osmotic pressure of the solution is 0.200 atm. what is the molar mass of the substance dissolved
Monday, September 8, 2014 by amelia

chemistry
calculate the density of a solid if a cube meassuring 2.04cm on one side has a mass of 124g ......................g/cm3 calculate the mass of a cube the same substance measuring 7.97cm on one side enter your answer in scientific notaation ..................x10 g
Sunday, September 7, 2014 by Abdul

Exponential decay
Show that if a radioactive substance has a half life of T, then the corresponding exponential decay function can be written as y=y0e^kt
Thursday, September 4, 2014 by Adrianna

math
Show that if a radioactive substance has a half life of T, then the corresponding constant k in the exponential decay function is given by k=-ln(2)/T I'm confused about how to show that that is true.
Thursday, September 4, 2014 by lucy

chemistry
An unknown substance has a mass of 53.9 g and occupies a volume of 35.4 mL. What is its density in g/mL?
Wednesday, September 3, 2014 by opeyemi

Physics
A 0.250-kg block of a pure material is heated from 20.0°C to 65.0°C by the addition of 4.35 kJ of energy. Calculate its specific heat and identify the substance of which it is most likely composed.
Saturday, August 30, 2014 by Anonymous

algebra
Two Questions: 1) A certain radioactive isotope has leaked into a small stream. 100 days later after the leak 10% of the original amount of the substance. Determine the half-life of this radioactive isotope. 2) During a research experiment, it was found that the number of ...
Thursday, August 28, 2014 by kenni

science
Suppose you were balancing a chemical equation that contained the substance sodium nitrate, NaNO3, composed of a sodium ion, Na+1, and a nitrate ion, (NO3)-1. Could you change any of these numbers in order to balance the equation?
Monday, August 25, 2014 by m

chemistry
a radioactive substance decays 10% in 5 days. The amount remains after 20 days?
Friday, August 15, 2014 by koteswaramma

english
Letter to a Citizen of Kentucky, an excerpt Executive Mansion, Washington, April 4, 1864. A. G. Hodges, Esq., Frankfort, Ky. My Dear Sir: You ask me to put in writing the substance of what I verbally stated the other day, in your presence, to Governor Bramlette and Senator ...
Thursday, August 14, 2014 by angela

physics 2
- Matter is made of charged particles - The motion of charged particles produces electromagnetic waves - Since light is an electromagnetic wave, the color of a substance is ultimately related to the way that charged particles in that substance can move around. Quantum ...
Thursday, August 7, 2014 by lost physics 2 student

physics 2
- Matter is made of charged particles - The motion of charged particles produces electromagnetic waves - Since light is an electromagnetic wave, the color of a substance is ultimately related to the way that charged particles in that substance can move around. Quantum ...
Thursday, August 7, 2014 by Daniella

Biology/Help
Which of the following is the purpose of the waxy substance that builds up in the ear canal? A. Insulating the ear canal B. Trapping and removing debris C. Promoting sound conduction D. Cushioning and stabilizing the pinna I thinks it is B
Wednesday, July 30, 2014 by Dulce

Biology
A scientist has noted a possible relationship between a certain chemical substance found in fish and the occurrence of kidney failure in humans. Which of the following preliminary steps should the scientist take before conducting a controlled experiment? A. Establish a cause ...
Sunday, July 27, 2014 by J

Physics
The melting point of substance X is -20 degrees Celsius and the boiling point is 90 degrees Celsius. How many Celsius degrees are there between the melting point and the boiling point? 20 degrees Celsius 70 degrees Celsius 90 degrees Celsius 110 degrees Celsius
Thursday, July 17, 2014 by Anna

Chemistry
A saturated solution is made by dissolving 0.252 g of a polypeptide (a substance formed by joining together in a chainlike fashion some number of amino acids) in water to give 1.92 L of solution. The solution has an osmotic pressure of 3.69 torr at 25 °C. What is the ...
Tuesday, July 15, 2014 by Luke

Chemistry
A saturated solution is made by dissolving 0.325 g of a polypeptide (a substance formed by joining together in a chainlike fashion some number of amino acids) in water to give 1.37 L of solution. The solution has an osmotic pressure of 4.13 torr at 28 °C. What is the ...
Monday, July 14, 2014 by Luke

CHEMISTRY
Can a substance made of zinc be coated by nickel , using nickel nitrate solution ? How ?
Thursday, July 10, 2014 by MAD

CHEMISTRY
How many oxidation states Should a substance have at least to undergo Disproportionation reaction ? thanks
Wednesday, July 9, 2014 by MAD

CHEMISTRY
A substance contains an element at its probable maximum oxidation number , does this substance have a maximum chance to be an oxidizing agent or have a minimum chance to be a reducing agent ? thank you
Wednesday, July 9, 2014 by MAD

statistics
Twelve different video games showing substance use were observed and the duration times of game play (in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a simple random sample. Use the sample data to construct and ...
Monday, July 7, 2014 by Teniqua Evans

CHEMISTRY
The solubility of a substance is 12 g per 100 g water at 20 degree , and is 18 g per 100 g water at 60 degree , what is the mass of the substance can be crystallized in a saturated solution that contain 200 g of water , if the solution cooled from 60 to 20 degree ?
Thursday, July 3, 2014 by MAD

Chemistry
13) Mercury is an environmental pollutant because it can be converted by certain bacteria into the very poisonous substance dimethyl mercury, (CH3)2Hg. This compound ends up in the food chain and accumulates in the tissues of aquatic organisms, particularly fish, which renders...
Tuesday, July 1, 2014 by Luke

Chemistry
Balanced equations..done? Is each reaction a redox reaction? For those reactions that are redox reactions, I must identify the substance being oxidized and the substance being reduced... (a) Zn(s) + CoCl2 (aq) ---> ZnCl2 (aq) + Co(s) (b) HI(aq) + NaOH(aq) ---> H2 O(l) + ...
Sunday, June 29, 2014 by MD

NEED HELP WITH CALC
Suppose strontium-90 decays at a rate of 2 percent per year. (a) Write the fraction P of strontium remaining, as function of t, measured in years. (Assume that at time t=0 there is 100 % remaining.) Answer: P(t) = (b) Estimate the half-life of strontium. Answer: Hint: Use your...
Friday, June 27, 2014 by Anonymous

calculus
Suppose strontium-90 decays at a rate of 2 percent per year. (a) Write the fraction P of strontium remaining, as function of t, measured in years. (Assume that at time t=0 there is 100 % remaining.) Answer: P(t) = (b) Estimate the half-life of strontium. Answer: Hint: Use your...
Friday, June 27, 2014 by Anonymous

Math
Suppose strontium-90 decays at a rate of 2 percent per year. (a) Write the fraction P of strontium remaining, as function of t, measured in years. (Assume that at time t=0 there is 100 % remaining.) Answer: P(t) = (b) Estimate the half-life of strontium. Answer: Hint: Use your...
Friday, June 27, 2014 by Anonymous

Chemistry
When 4.76 g of a solid mixture composed of NH4Cl and CaCl2 was dissolved in 100.0 mL of water, the temperature of the water rose by 4.73°C. How many grams of each substance was in the mixture?
Thursday, June 26, 2014 by Luke

Maths
A radioactive substance decays exponentially in such a way that after 50 years, 60% of the initial amount remains. Find an expression for the quantity remaining after t years.
Sunday, June 15, 2014 by Rish

physical sciences
Which substance has the weakest intermolecular force between ethanol,nail polish remover and methylated spirits?
Sunday, June 8, 2014 by Goodness

English! - Help!
Can someone help me with these? My answer has a "***" next to it. 1. What do you think the narrator of “The Gift of the Magi” considers as having real value? (1 point) the protagonists' hard work the protagonists' wisdom the protagonists' ...
Tuesday, June 3, 2014 by Sandy East Ward

science
what is a form of energy that is always transferred from a warmer substance to a cooler one?
Wednesday, May 28, 2014 by bobby

English III
Letter to a Citizen of Kentucky, an excerpt Executive Mansion, Washington, April 4, 1864. A. G. Hodges, Esq., Frankfort, Ky. My Dear Sir: You ask me to put in writing the substance of what I verbally stated the other day, in your presence, to Governor Bramlette and Senator ...
Saturday, May 24, 2014 by Halo4Records

Science(chemistry)
Give one word/term for the following descriptions during this type of reaction,the appearance,colour or shape of a substance is changed
Wednesday, May 21, 2014 by Lesedi

Chemistry
What is the specific heat of a substance if 2100 J is required to raise a 312 g sample by 15 degrees Celsius? So I use the q = mcΔT formula 2100J = (312 g)c(85 °C - 15 °C) I'm not sure if I did it right.
Tuesday, May 20, 2014 by Katherina Ramos

Chemistry
1. Sugar can be dissolved in water because of the presence of bonds between _______ in its molecule. 2. If the maximum amount of a compound that can dissolve in 100 mL of water is 22 g, then a solution of 20 g of that substance in 100 mL of water is said to be _______. 3. A ...
Tuesday, May 20, 2014 by Amanda

Chemistry
1. Sugar can be dissolved in water because of the presence of bonds between _______ in its molecule. 2. If the maximum amount of a compound that can dissolve in 100 mL of water is 22 g, then a solution of 20 g of that substance in 100 mL of water is said to be _______. 3. A ...
Tuesday, May 20, 2014 by Amanda

science
Ions are electrically charged particles that are formed when certain compounds are dissolved in water. These solutions will conduct electricity. The Swedish scientist Svante Arrhenius coined the term ion (which means wanderer) to explain why solutions of electrolytes will ...
Thursday, May 15, 2014 by dummdumm

SCI 275
Resource: Chapter 18 Select one case study or an example, from Chapter 18 that describes the impacts of a toxic substance on human health. Answer the following questions based on the risk assessment principles presented in Ch. 18, and in Figure 18-10 in section 18.7 Risk and ...
Thursday, May 15, 2014 by Kelly

SCI 275
Resource: Chapter 18 Select one case study or an example, from Chapter 18 that describes the impacts of a toxic substance on human health. Answer the following questions based on the risk assessment principles presented in Ch. 18, and in Figure 18-10 in section 18.7 Risk and ...
Thursday, May 15, 2014 by Kelly

Math-Exponential Decay
A lab technician had 58 grams of a radioactive substance. Ten days later, only 52 grams remained. Find the half-life of the radioactive substance.
Monday, May 12, 2014 by Anonymous

Chemistry
So I am trying to understand in molecular terms the solubility of NaCl in water. So there are intramolecular forces that are mostly ionic between the ions, creating this partial positive, partial negative substance. And the intermolecular forces are also ionic. Ionic forces ...
Thursday, May 8, 2014 by Serena

URGENT Physics help
An attractive force of 7.2 N occurs between two point charges that are 0.10 m apart. If one charge is 4.0 µC, what is the other charge? (µC = 1.0 × 106 C) (Points : 3) 1.0 µC 2.0 µC +1.0 µC +2.0 µC Which substance is most easily ...
Wednesday, May 7, 2014 by Melody

Calculus
Poli 761 (a fictitious substance) decays by about 7% every day. How much of a 88 pound sample remains after 9 days?
Tuesday, May 6, 2014 by Ann

physics
Suppose an unknown substance has a melting temperature of 1,200 degrees Celsius and a density of 16.7 g/cm3. However, the different individual atoms that make up the substance have very different melting temperatures and densities. The unknown substance is most likely a
Tuesday, May 6, 2014 by coon

chemistry
Some of the substance commonly used in stomach antiacid are MGO,MG(OH)2,AL(OH)3. Which of these substance will neutralize thr greatest amount of 0.10M HCl per gram?
Monday, May 5, 2014 by zb

Chemistry
Which substance has the higher entropy? a.) a sample of pure silicon (to be used in a computer chip)or a piece of silicon containing a trace of another element such as boron or phosphorus b.) O2(g) at 0 degrees C or O2(g) at -50 degrees C c.) I2(s) or I2(g), both at room ...
Wednesday, April 30, 2014 by Sha

Chemistry
what is the specific heat of an unknown substance of 2000 j of energy required to raise the temperature of 4 grams of substances 5 degrees celsius
Wednesday, April 30, 2014 by Tyran Wilson

Chemistry
1) In the reaction NaOH + H2O --> Na+ + OH-, sodium hydroxide is the: A) Lewis acid B) Brønsted-Lowry acid C) Arrhenius base D) Amphoteric substance E) None of the above (I think it's C) 2) The conjugate acid of the sulfide ion is: A) S^2- B) HS- C) H2S D) H3S+ E...
Tuesday, April 29, 2014 by Amanda

Chemistry
What is the specific heat of an unknown substance if a 2.45g samples releases 12.9 cal as its temperature changes from 25.1 degrees C to 20.1 degrees C?
Sunday, April 27, 2014 by Ashley

Chemistry
Predict how the entropy of the substance is affected in the following processes: a) O2 (g,200 kPa, 300k) --> O2 (g, 100, 300k) b)Br2 (l, 1 bar, 25 degree C) --> Br2 (g, 1 bar, 25 degree C) C)Fe (s, 1 bar, 250 degree C)--> Fe(s, 1 bar, 25 degree C) will entropy either ...
Sunday, April 20, 2014 by Alexis

chemistry
a 0.0500 mol sample of a nutrient substance is burned in a bomb calorimeter containing 2.00 x 10^2g H2O. If the formula weight of this nutrient substance is 114g/mol, what is the fuel value (in nutrient Cal) if the temperature of the water increased 5.70C
Tuesday, April 15, 2014 by ana

chemistry
Determine the mole fraction of each substance in a solution containing 36.0g H2O and 46g glycerin, C3H5(OH)3
Tuesday, April 15, 2014 by chantal

accounting
Wendell Corporation exchanged an old truck and $25,500 cash for a new truck. The old truck had a book value of $6,000 (original cost of $25,000 less $19,000 in accumulated depreciation) and a fair value of $7,700. Required: 1. Prepare the journal entry to record the exchange. ...
Monday, April 14, 2014 by angela

English III
Lesson 6.07 Letter to a Citizen of Kentucky, an excerpt Executive Mansion, Washington, April 4, 1864. A. G. Hodges, Esq., Frankfort, Ky. My Dear Sir: You ask me to put in writing the substance of what I verbally stated the other day, in your presence, to Governor Bramlette and...
Thursday, April 10, 2014 by MAN

Calculus Help Please!!!
A radioactive substance has a half-life of 4 days. Suppose we have 800 mg of this substance. a) Find the equation of the mass remaining after t days. Use the exact value for k not a decimal approximation. b) Rounding your answer to the nearest tenth of a mg, find the mass ...
Wednesday, April 9, 2014 by Kim

Chemistry Help Please!!!
A radioactive substance has a half-life of 4 days. Suppose we have 800 mg of this substance. a) Find the equation of the mass remaining after t days. Use the exact value for k not a decimal approximation. b) Rounding your answer to the nearest tenth of a mg, find the mass ...
Monday, April 7, 2014 by Taylor

Math
Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your answer to three decimal...
Monday, April 7, 2014 by Vanessa

math
Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your answer to three decimal...
Monday, April 7, 2014 by vanessa

Math
Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your answer to three decimal...
Sunday, April 6, 2014 by Vanessa

Math
A radioactive substance decays according to the formula Q(t) = Q0e−kt where Q(t) denotes the amount of the substance present at time t (measured in years), Q0 denotes the amount of the substance present initially, and k (a positive constant) is the decay constant. (a) ...
Sunday, April 6, 2014 by Vanessa

Math
A radioactive substance decays according to the formula Q(t) = Q0e−kt where Q(t) denotes the amount of the substance present at time t (measured in years), Q0 denotes the amount of the substance present initially, and k (a positive constant) is the decay constant. (a) ...
Saturday, April 5, 2014 by Vanessa

math
Phosphorus-32 (P-32) has a half-life of 14.2 days. If 200 g of this substance are present initially, find the amount Q(t) present after t days. (Round your growth constant to four decimal places.) How fast is the P-32 decaying when t = 21.5? (Round your answer to three decimal...
Saturday, April 5, 2014 by Vanessa

science
The type of heat transfer called convection happens as a result of: a. electromagnetic waves b. the direct contact of particles in a substance c. the actual motion of a fluid in the form of currents d. All of the above I think it's C.
Thursday, April 3, 2014 by Red

chemistry
Based upon the intermolecular forces present, rank the following substances according to the expected boiling point for the substance: MgF2, H2O, HCl, N2
Thursday, April 3, 2014 by sara

science
PLEASE HELP GUYS An ideal gas for which Cv = 3R/2 is the working substance of a Carnot engine. During the isothermal expansion, the volume doubles. The ratio of the final volume to the initial volume in the adiabatic expansion is 5.7. The work output of the engine is 9 x 105 J...
Thursday, April 3, 2014 by juniah

science
An ideal gas for which Cv = 3R/2 is the working substance of a Carnot engine. During the isothermal expansion, the volume doubles. The ratio of the final volume to the initial volume in the adiabatic expansion is 5.7. The work output of the engine is 9 x 105 J in each cycle. ...
Thursday, April 3, 2014 by juniah

Biology (fetal pig)
What substance passes through the glottis? [Is it Air??] What substances passes through the esophagus? [I don't know if this is food] please help. thanks
Friday, March 28, 2014 by Sarah

Chemistry
I got think I got the following questions almost figured, but I just want someone to make sure that I am correct. 1) The whole experiment involves using the ideal gas law to predict the molar mass of an unknown liquid. The formula is molar mass of liquid = gR(0.0821)T(...
Friday, March 28, 2014 by Sandy

chemistry
A solution is made with 2.0 g of substance that cause the temperature of 75.0 g of water to decrease from 23.1 C to 18.7 C. The specific heat of water is 4.18 J/g C.
Wednesday, March 26, 2014 by Phailin

Science asap thankies :)
What would a permanently magnetic substance be called? I cant remember what my teacher called it, it was a short first word then magnet.. sorry and thanks!
Tuesday, March 25, 2014 by imissbobby♥

Statistics
Twelve different video games showing substance use were observed and the duration times of game play ( in seconds) are listed below. The design of the study justifies the assumption that the sample can be treated as a simple random sample. use the data to construct a 95% ...
Monday, March 24, 2014 by Angel

science
what is the substance that melts at 10°C?
Saturday, March 22, 2014 by lusika tangoi

scholarship essay edit
can someone edit this? Throughout my life’s journey, I have come to attain two true passions - the first one being English studies. Since the very dawn of childhood, I have been known to bleed the calligraphic content of Gary Soto's brilliant poetry and breathe the ...
Friday, March 21, 2014 by christine

TO: DrBob222 science
1. Write the chemical formula for each of the following acids: a.) hydrocyanic acid b.) oxalic acid c.) chlorous acid d.) nitric acid 2. Write the acid name or chemical formula for each of the following: a.) HBr b.) sulfurous acid c.) HClO4 D.) phosphoric acid 3. First ...
Thursday, March 20, 2014 by Anonymous

Physical Science
When 8 kcal of heat is added to 2.4 kg of a substance, its temperature increases 23 C°. What is the specific heat of the substance?
Monday, March 17, 2014 by jasmine

Physical Science 9
a substance made of two or more elements chemically combined in a set ratio or proportion is called what
Sunday, March 16, 2014 by Steve

Science
a substance made of two or more elements chemically combined in a set ratio or proportion is called what
Sunday, March 16, 2014 by Steve

science
One property used to broadly classify elements is malleability. If a substance is malleable, it can be hammered, shaped, and flattened without shattering. Which group of elements has this property? A. Metals B. Metalloids C. Nonmetals D. Noble gases
Thursday, March 13, 2014 by Anonymous

science
3. A section of the Periodic Table of the Elements is shown. Based on the positions of the elements, the two elements that have the most similar chemical properties are — A. calcium and scandium B. calcium and titanium C. titanium and vanadium D. magnesium and calcium 4. ...
Thursday, March 13, 2014 by Anonymous

PLS HELP ASAP 1 SUPER HARD & ANNOYING QUESTION
Use the diagram to answer question 13. so substance A looks like a row of three little circles on the top and bottom all organized (total six dots). substance b is all clumped together circles and is disorganized. 13. How can substance A and B be compared? Choose all that ...
Wednesday, March 12, 2014 by sonamy4eva

Chemistry Urgent
A calorimeter contains 32.0mL of water at 13.0∘C . When 2.30g of X (a substance with a molar mass of 82.0g/mol is added, it dissolves via the reaction X(s)+H2O(l)¨X(aq) and the temperature of the solution increases to 30.0∘C . Calculate the enthalpy ...
Tuesday, March 11, 2014 by Anna

Science help
A student combined water, sugar, and salt into a beaker. Which of the following statements are true? a. The individual substances can be separated by physical means.** b. The individual substances cannot be separated by physical means. c. A new substance is made of two or more...
Monday, March 10, 2014 by #1Student

Chemistry
A 2.6 g of a substance that looks like gold needed 9.4 J of heat energy to raise its temperature from 20 to 38 ºC. Is the metal pure gold?
Friday, March 7, 2014 by Connor

Science- Check Please :)
I only have a couple questions left but I want to be sure that my answers are correct so can someone please help me by checking my answers and if they are wrong can someone please let me know? Thank you! Question Number 1: A freshwater marsh is a type of ecosystem. Grasses, ...
Wednesday, March 5, 2014 by Catarina

Science
If the melting point of a substance is -39C, has the substance melted at 20C?
Wednesday, March 5, 2014 by Miaya

Science
1. What would happen to an object if the force of gravity on Earth was decreased by half? (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2. Which of the following represents a heterogeneous mixture? (1 ...
Tuesday, March 4, 2014 by Daniel Brown

Science
1.   What would happen to an object if the force of gravity on Earth was decreased by half?  (1 point) Its mass would decrease. Its weight would decrease.* Its density would decrease. Its volume would decrease. 2.   Which of the following ...
Tuesday, March 4, 2014 by Daniel Brown

chemistry
Hello, a few questions: Thanks so much! 1. The heat capacities of titanium and water are 0.522 J g-1 K-1 and 4.184 J g-1 K-1, respectively. What is the final temperature of the titanium-water mixture if a 175.0-g sample of titanium, initially at 90.0oC, is added to 50.0 g of ...
Saturday, March 1, 2014 by abby

Chemistry
If say 70 mL of water is heated vs 100 mL of water, would the temperature be different or does the amount of the substance not make a difference on the temperature Thanks!
Thursday, February 27, 2014 by Laura

science
1.   Which statement is true about the following molecule?  (1 point)The molecule is composed of four atoms.The molecule contains oxygen atoms.The molecule is water.The molecule represents an element. 2.   A(n) _____________ is made up of two or ...
Thursday, February 27, 2014 by cIATA

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