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April 21, 2014

Homework Help: Health: Substance Abuse

Recent Homework Questions About Substance Abuse

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Chemistry
A total charge of 96.5 kC is passed through an electrolytic cell. Determine the quantity of substance produced in each of the following cases. (a) the mass (in grams) of silver metal from a silver nitrate solution (b) the volume (in liters at 273 K and 1.00 atm) of chlorine ...
Friday, June 21, 2013 at 8:59pm

Illegal Drugs
SECOND the illigal drugs causes the gang violence because it identifies tha a number of factors that put youth at risk of gang involvement is poverty, school failure, substance abuse, family dysfunction, and domestic and societal violence. Illegal drugs are very harmful ...
Monday, June 17, 2013 at 9:38pm

life orientation
critically discuss 5 ways in which substance abuse can have an impact on human & environmental factor?
Monday, June 17, 2013 at 2:36pm

Chemistry
that strange!! the amount of heat evolved for a particular substance is Q = mc?T where m is the mass of that substance c is the specific heat capacity and ?T is the change in temperature during transition change or reaction. So as the mass increased so the Q as well.
Monday, June 17, 2013 at 12:58am

THE AGE OF DISCOVERY TO THE AMERICAN EXPERIMENT
How does gender aeffct your memory?Which hand sanitizer works the best? (use petri dishes)How does age aeffct your sense of smell?How does age aeffct your memory?How does color aeffct your reaction time?Which posture works best when singing?Which paper towel brand is the ...
Tuesday, June 11, 2013 at 3:32am

chemistry
Ok, so using Le Chatelier's Principle If you add heat to an exothermic reaction, the equilibrium will shift to the left. If you remove heat to an exothermic reaction, the equilibrium will shift to the right. What is it for an ENDOTHERMIC reaction? If you add a substance, ...
Tuesday, June 4, 2013 at 11:56pm

chemistry
for each pair of substance listed below identify one with lower boiling point
Friday, May 31, 2013 at 9:56am

hernandez
find the molar enthalpy of vaporization for a substance, given that 3.21 mol of the substance absolve 28.4 kj of energy as heat when the substance changes from liquid to gas? show the work
Thursday, May 30, 2013 at 9:38pm

Chemistry
BaSO4(s)__><--- Ba2+(aq) + SO42−(aq) Adding what substance produces more SO4^2-??? This was a question, that had options of 1. SO4^2- 2. Ba2+ 3. BaSO4(s) 4. and i think a compound with NH in it Thank you
Wednesday, May 29, 2013 at 11:03pm

Physics
A substance is heated from –12.0oF to 150.0oF. What is its change in temperature on (a) the Celsius scales,(b) the Kelvin scales
Tuesday, May 28, 2013 at 6:25am

science
Please be more careful with your spelling. A chemical reaction in which two or more substances undergo a chemical union to form a more complex substance is: a Direct Combination or Synthesis Reaction
Tuesday, May 28, 2013 at 2:49am

science
A chemical reaction in which to or more substance undergo a chemical union to form more complex substance is a what reaction?
Monday, May 27, 2013 at 6:28pm

Grade 12 life orientation
hey every one please guys help me out ,gimme2 community organizations that are involved in supporting or giving redress to the communite about substance abuse
Sunday, May 26, 2013 at 4:35pm

L.o
Human or environmental problem under substance abuse. The impacts
Sunday, May 26, 2013 at 2:23pm

life orientation
provide recommendations on how to address substance abuse
Tuesday, May 21, 2013 at 12:27pm

TEACHER AIDE,CHILDREN, FAMILIES, SOCIETE
1. Larry is a very aggressive four-year-old child. He watches many television programs that contain violence. It’s most likely that A. he will become overactive. C. his behavior won’t change. B. he will become depressed. D. his behavior will become more aggressive. 2...
Saturday, May 18, 2013 at 5:00pm

life orientation
in 10-15 lines critically discuss 5 ways in which substance abuse impacts on the community.
Tuesday, May 14, 2013 at 9:55am

life orientation
http://www.google.com/webhp?source=searc​h_app#hl=en&biw=711&bih=453&sclient=psy-​ab&q=substance+abuse+in+south+africa+you​th&oq=substance+abuse+South+Africa+y&gs_​l=hp.1.0.0i22i30l4.1708.12377.0.15896.34​.19.2.13.13.0.279.2401.3j15j1.19.0...0.0&#...
Monday, May 13, 2013 at 12:01pm

life orientation
describe the substance abuse of both legal and illegal drogs among the youth and explain the the factors that contribute to the disease.
Monday, May 13, 2013 at 9:24am

Chemistry
If I used 100% larger sample mass of an unknown substance what effect would that have on the empirical formula that would be obtained?
Monday, May 13, 2013 at 2:20am

science
A form of energy that is always transferred from a warmer substance to a cooler one.
Sunday, May 12, 2013 at 9:04pm

Life orientation
substance abuse . people who do drugs steal in our home
Wednesday, May 8, 2013 at 1:02pm

Algebra 2
A 14 gram sample of a substance that's used to preserve fruit and vegetables has a k-value of 0.1092. Find the substance's half-life, in days. Round your answer to the nearest tenth.
Tuesday, May 7, 2013 at 2:11pm

Science
Please check my answers (at the bottom) with these questions. 1. An apple quickly changes color when exposed to air. This demonstrates a ________. (1 point) physical property chemical property physical change all of the above 2. When a chunk of dry ice is at room temperature, ...
Tuesday, May 7, 2013 at 12:22pm

Chemistry
A substance releases 496kJ of heat as 2.60 moles condense from a gas into a liquid. What is the molar heat of vaporization of the substance?
Tuesday, May 7, 2013 at 12:14pm

Pre-Algebra
Tempurature of substance increases by 10°C in 5 minutes. Write it as a unit rate. Then convert it to degrees Fahrenheit per hour.
Monday, May 6, 2013 at 7:46pm

life orientation
In 10-15 lines critically discuss 5 ways in which the human or environmental problem impact on the community in related to substance abuse
Monday, May 6, 2013 at 6:00pm

Life orientation
in 10-15 lines critically discuss 5 ways in which substance abuse impacts on the community. provide relevant sources to support your claims
Monday, May 6, 2013 at 3:32pm

substance
Which problem?
Friday, May 3, 2013 at 11:19am

substance
10-15 lines critically discuss 5 ways in which the human problem impacts on the community
Friday, May 3, 2013 at 2:52am

PHYSICS!
The quantity of heat that changes the temperature of a mass of a substance is given by , where is the specific heat capacity of the substance. For example, for , . And for a change of phase, the quantity of heat that changes the phase of a mass is , where is the heat of fusion...
Thursday, May 2, 2013 at 2:25pm

Life orientation
Recommendations on how to address substance abuse
Thursday, May 2, 2013 at 12:15pm

Life orientation
Five ways in wich substance abuse problem impact on the communities
Thursday, May 2, 2013 at 12:10pm

life orentation
Pollution is the presenc in or introduction into the enviroment of a substance or thing that has harmful or poisonous effect.pollution is impact into stages such as air pollution, land pollution and water pollution. Pollution has harm on human which causes ill-health.pollution...
Wednesday, May 1, 2013 at 2:34pm

Chemistry
I just to know how to identify the substance that is reduced, the substance that is oxidized, the oxidizing agent and the reducing agent in each reaction. As (s) + ClO3-(aq) → H3AsO3 (aq) + HClO(aq) CN-(aq) + MnO4-(aq) → CNO-(aq) + MnO2(s) C2H5OH + MnO4- → ...
Tuesday, April 30, 2013 at 11:01pm

chemistry: please check answers.
1. How many valence electrons does a carbon atom have? A) 1 B) 2 C) 3 D) 4<<my answer 2. How many double covalent bonds are in an alkane? A) 0<<my answer B) 1 C) 2 D) 3 3. What is the general formula for a straight-chain alkane? A) CnHn B) CnHn+2 C) CnH2n D) CnH2n+...
Tuesday, April 30, 2013 at 10:30am

chemistry
Pipette 3 drops of oil into a test tube of water and shake. Describe what takes place and why? - Would it be the oil settles at the top of the water, because the oil is less dense, and its a non-polar substance, so it doesn't mix with a polar substance (water). Add 1 scoop...
Tuesday, April 30, 2013 at 12:28am

Science
1.A 2.A 3.C 4.C 5.D 6.B 7.D 8.C 9 Chemilcal I dont know if number ten is fully right but i hope it helps. 10. Color is classified as both physical and chemical properties. Color is a physical property because it is the visible light that the substance does not absorb. Color is...
Monday, April 29, 2013 at 3:21pm

Physics
A bullet is made up of what substance?
Monday, April 29, 2013 at 5:52am

Physics
A bullet is made up of what substance?
Monday, April 29, 2013 at 5:51am

Physics
A bullet is made up of what substance?
Monday, April 29, 2013 at 5:51am

Physics
A bullet is made up of what substance?
Monday, April 29, 2013 at 5:20am

algebra
Andrew measures they amount of a very unstable substance to be 100 moles. the half life of this substance is 3 days(after 3 days, half is gone). write an exponential function that models this situation where Y is the amount of substance and X is time in days. use your equation...
Friday, April 26, 2013 at 11:11pm

Science
During an experiment, you find that you can dissolve 3.6 g of a substance in 300 mL of water at 25°C. How much of the substance would you predict that you could dissolve in 600 mL of water at the same temperature? Can somebody help me with this? I don't get it.
Thursday, April 25, 2013 at 11:26am

Life orientation
Describe the life style disease/behaviour and explain 5 or more factors that contribute to the disease of substance abuse of both legal and illegal drugs among the youth
Thursday, April 25, 2013 at 10:00am

Life orentation
You can research these two organizations. Alcoholics Anonymous Kalamazoo County Substance Abuse Task Force
Wednesday, April 24, 2013 at 4:21pm

L.o
5 ways in which the human or environmental problem impacts on the substance abuse at community .provide relevant sources to support your claims
Wednesday, April 24, 2013 at 3:16pm

L.o
5 ways in which the human or environmental problem impacts on the substance abuse at community .provide relevant sources to support your claims
Wednesday, April 24, 2013 at 3:16pm

physics
Objects A and B have the same mass of 3.4 kg and are at their melting points. They melt when 4.9 × 104 J of heat is added to A and when 11 × 104 J is added to B. (a), (b) Determine the latent heat of fusion for the substance from which each object is made. (c) Find...
Wednesday, April 24, 2013 at 1:25pm

life orientation
Substance abuse of both legal and illegal drugs among the youth
Tuesday, April 23, 2013 at 3:13am

chemistry
2Al + 3CuSO4 ==> Al2(SO4)3 + 3Cu 1. mols Al = grams/molar mass = about 0.092 but you need to be more accurate than that. 2. Convert mols Al to mols of any other substance using the coefficients in the balanced equation. Fo example mols Cu = mols Al x (3 mool Cu/2 mol Al) = ...
Monday, April 22, 2013 at 10:26pm

Life Orientation
Explain 5(or more)factors that contribute to the substance abuse of both Legal and Illegal drugs among the youth
Sunday, April 21, 2013 at 11:10am

sew
A chemical substance that causes dyes to set is called?
Sunday, April 21, 2013 at 10:40am

Life orientation
Substance abuse , in 10-15 line critically discuss 5 ways in in which the human or environment al problem impact on the community . Provide relevant source to support your claims
Saturday, April 20, 2013 at 12:00pm

ELECTROLYSIS OF ZnI2
ELECTROLYSIS OF ZnI2 if you have done this experiment Please help me answer these questions as i missed the last half of my chem lab today. 1. What color change occurred when the wire is first heated. -next question is... What is the identity of the liberated metal? 2. what ...
Thursday, April 18, 2013 at 7:09pm

chemistry
What is the specific heat of an unknown substance if a 2.53 g sample releases 13.1 cal as its temperature changes from 25.5°C to 21.3°C?
Wednesday, April 17, 2013 at 4:08pm

psychology
To the extent that psychology uses scientific methods, it is a science. Below may be more information than you wanted. An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative ...
Wednesday, April 17, 2013 at 3:40pm

LIfe orientation
i think many communities will encounter due to substance of abuse
Wednesday, April 17, 2013 at 3:23pm

Grd 12 life orientation
Describe the life style behaviour and explain 5 factors that contribute to the substance abuse of both legal and illegal drugs among the youth
Wednesday, April 17, 2013 at 2:39pm

life orientation
in 15 lines critically discuss 5 ways in which the human or environmental problem impacts on the community in substance abuse
Wednesday, April 17, 2013 at 11:09am

chemistry
What is the specific heat of an unknown substance if a 2.31 g sample releases 12.5 cal as its temperature changes from 24.9°C to 20.7°C? Please explain ans show steps.
Tuesday, April 16, 2013 at 7:26pm

Chemistry
Substance X (MW=356gm) is a weak acid. Its Ka is 1.7x10^-3. Calculate pH of725ml of the following solutions: a)Containing 0.187 mol of substance x b)containing 127gm of Substance x I have been trying to figure this problem out for hours now and do not get it. Please help me ...
Tuesday, April 16, 2013 at 11:54am

Chemistry
Phenol extraction is a commonly used method for removing proteins from a DNA sample, e.g. to remove proteins from cell lysate during genomic DNA preparation. It’s commonly used, but not commonly understood. The basic protocol I’ll start with a quick outline of how ...
Tuesday, April 16, 2013 at 7:05am

science
Why is it difficult to distinguish between some pure substances and solutions? What methods can overcome this to define if either it is a pure substance or solution?
Sunday, April 14, 2013 at 10:56pm

Chemistry
the problem is in a table format, then the first substance is Zn.. I need to compute for mass, molar mass, # of moles, # of molecules and #of atoms I know the molar mass. but the rest i don't know how to do because there's no other given.
Sunday, April 14, 2013 at 2:58pm

Chemistry
how to find the mass of the substance if the only given is the molar mass???
Sunday, April 14, 2013 at 1:11pm

Life orientation
Which institution or organisation involved in supporting or giving redress to substance abuse?
Sunday, April 14, 2013 at 9:52am

Life orientation
i thnk substance abuse is one of human factors
Sunday, April 14, 2013 at 3:58am

Life orientation
i thnk substance abuse is one of human factors
Sunday, April 14, 2013 at 3:57am

Anatomy & Physiology
Questions 1–35: Select the one best answer to each question. 1. During an emergency room examination for an injured arm, the physician palpates the arm’s entire length, starting at the shoulder and ending at the fingers of the hand. This process takes him from a/an ...
Saturday, April 13, 2013 at 6:08pm

Psychology
Differential Diagnosis & OCD Differential diagnosis requires distinguishing OCD from other psychiatric disorders. The following psychiatric disorders feature symptoms that may, at first, resemble OCD include the following: Major depressive disorder Other anxiety disorders ...
Friday, April 12, 2013 at 9:11am

AP CHEM HELP
When NH3 is added to solid Hg2Cl2, some of the mercury ions are oxidized and some are reduced. A reaction where the same substance is both oxidized and reduced is called a disproportionation reaction. Write equations for each of these half-reactions. HELP
Tuesday, April 9, 2013 at 7:03pm

science
1. _____ is the process by which food is broken down so that nutrients can be used by the body. (1 point) Absorption Digestion Elimination Ingestion 2. What type of digestion takes place in the mouth? (1 point) chemical mechanical chemical and mechanical neither chemical nor ...
Monday, April 8, 2013 at 7:51pm

Chemistry
Oh okay so they have two distinct jobs, but they're still together in the solution? For example in a lab or something, both chemicals would be mixed inside one beaker? Is this explanation right?: If an acid is added, the H3O+ ions will be removed by NaHCOO, which produces ...
Thursday, April 4, 2013 at 5:16pm

Chemistry
H2C2O4.2H2O(s) is primary standard substance. 2.3688g of oxalic acid hydrate were completely neutralized by 42.56ml of NaOH solution. Calculate the molar concentration of the NaOH solution. Write the balanced equation for the reaction.
Monday, April 1, 2013 at 8:08pm

Grade 12 Life orientation
Critically discuss 5 ways in which lifestyle/behaviour substance of both legal and illegal drugs impact on the teenagers?
Saturday, March 30, 2013 at 12:26pm

7th Grade Sience
1. A person's belief that he or she needs a drug to feel good or function normally (1 point) addiction psychological dependence emphysema tolerance 2. A large, dome-shaped muscle below the lungs (1 point) trachea alveoli diaphragm emphysema 3. Smoke that is inhaled and ...
Thursday, March 28, 2013 at 2:46pm

science
Monique heated the black substance with some corbon. Copper was formed. what are all the elements in the blue crystals ?
Tuesday, March 26, 2013 at 5:56am

chemistry
An unknown rectangular substance measures 3.6 cm high, 4.21 cm long, and 1.17 cm wide. If the mass is 21.3g, what is this substance’s density?
Monday, March 25, 2013 at 10:49pm

Biology
Eutrophication refers to 1. the concentration of a toxic substance in the tissues of organisms. 2. depletion of mineral resources as a result of leaching. 3. the warming of the earth’s surface. 4. the damage to the ozone layer that protects the earth from UV light. 5. ...
Tuesday, March 19, 2013 at 6:24pm

calculus
assume that during the first 3 minutes after a foreign substance is introduced into the blood,the rate R'(t) at which new antibodies are produced(in thousands of antibodies per minute) is given by R'(t)=t/(t^2+1) where t is in minutes.find the total quantity of new ...
Tuesday, March 19, 2013 at 3:06am

science
B) the concentration of the absorbing substance
Sunday, March 17, 2013 at 5:02pm

chem
Okay, looking at the reaction that you provided, 1 mole of C6H12O6=2 moles of C2H5OH You placed one mole of C6H12O6 in the vat. Your reaction tells you that you will get 2 moles of C2H5OH for every 1 mole of C6H12O6. C6H12O6 ----> 2C2H5OH+2CO2 We know that 1 mole of a ...
Thursday, March 14, 2013 at 8:02pm

defense
Warfarin is a blood clot preventer. Taking any substance(like bromelain)that can increase bleeding could be a disaster. In general, free radicals are chemicals with an excess of weakly bonded oxygen molecules, which can attach to the tissues in a body, oxidizing them, which ...
Wednesday, March 13, 2013 at 3:05pm

science
A substance is added to the solution of Barium sulphate,yellow precipitate is formed.What is that substance?
Wednesday, March 13, 2013 at 4:57am

Chemistry (Check)
Regarding 2&3: 2, always true. For a substance of known molar mass, the number of moles of a sample can (always) be calculated from the mass of the sample. The molar mass of O2 is 32.00 g. (This is the substance of known molar mass). Let's say you have a sample of 16 g O2...
Monday, March 11, 2013 at 9:06pm

chemistry
Plastic articles can be chromium-plated by coating them with thin layer of graphite paste,placing them in a bath of aqueous chromium(III) sulphate and electroplating. a)Suggest a reason why the article is first coated with graphite. b)what substance could be used for the other...
Sunday, March 10, 2013 at 6:39am

Chemistry
Recall that all aqueoous solutions contain_"solute ions, H^+ ions/OH^- ions/whatever"____. Water can also undergo ___"ionization"_. This process is called the __"autoionization"____of water. The reaction can be written as: "2H2O <==> ...
Friday, March 8, 2013 at 12:19am

Chemistry
Recall that all aqueoous solutions contain_____. Water can also undergo ____. This process is called the ______of water. The reaction can be written as: Notice the double arrow in the reaction. This indicates that the reaction is_____. However, only a tiny fraction of water ...
Thursday, March 7, 2013 at 9:53pm

Chemistry
3. For bronsted acids, water reacts as a _____ base", for bronsted bases, water reacts as an_"acid"______. Water is "amphoteric"_______it can act as an acid or a base (can lose or gain a__"proton"____) 4. According to the bronsted lowry ...
Thursday, March 7, 2013 at 9:32pm

Chemistry
These blanks I REALLLY need your help. Our teacher gave the teaching job to this other I think coop student who wants to be a teacher to teach for a day but I| seriously don't understand anything she said..in short I don't have anyyy clue about this. So please help me...
Thursday, March 7, 2013 at 9:08pm

Psychology
We do not do your homework for you. Although it might take more effort to do the work on your own, you will profit more from your effort. We will be happy to evaluate your work though. However, this information might help. An independent variable is the potential stimulus or ...
Monday, March 4, 2013 at 1:26pm

Chemistry
Can someone check my answers please? I had specific trouble with 7, 13, and 27 (I'm pretty sure my other answers are correct; some reassurance would be nice though). And I have a small question about 8. 1. The ΔHf of an element in its standard state is defined to be 0...
Sunday, March 3, 2013 at 6:05pm

ALGEBRA
Suppose that a certain radioactive substance has a half-life of 20 years. If there are presently 2400 milligrams of the substance, how much, to the nearest milligram, will remain after 70 years?
Sunday, March 3, 2013 at 3:07pm

science
A substance has a mass of 12.5 grams and a volume of 9.8 ml.Will the object sink or float in water?
Friday, March 1, 2013 at 11:51am

Chemistry
For NaCl, Van 't Hoff factor=2. Find the molality like you did for Urea. But remember, the question is asking how does ∆T change with different mass or mole ratios. grams of substance*( 1 mole/molecular weight)= moles of substance
Wednesday, February 27, 2013 at 12:16am

Chemistry
A 1.065-g sample of an unknown substance is dissolved in 30.00 g of benzene; the freezing point of the solution is 4.25 degrees C. The compound is 50.69% C, 4.23% H, and 45.08% O by mass. Info you might need on benzene: Normal Freezing point,degrees C: 5.53 Kf, degrees m^1: 5....
Monday, February 25, 2013 at 2:19am

Chemistry
Substance ( -253 -417 195 -475
Sunday, February 24, 2013 at 10:00pm

Chemistry
I need help in solving this problem: A certain substance has a heat of vaporization of 42.46 kJ/mol. At what Kelvin temperature will the vapor pressure be 5.00 times higher than it was at 291 K? I know that I have to use the Clausius-Clapeyron equation, but what would I be ...
Sunday, February 24, 2013 at 3:27pm

chemistry
sometimes,instead of percentage composition, you will have the composition of a mass sample. using the actual mass of the sample, determine the empirical formula for compounds that have the following analyses. b. a 13.07g sample of an unknown substance is composed of 9.48g of ...
Saturday, February 23, 2013 at 7:34pm

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