Homework Help: Health: Substance Abuse

Recent Homework Questions About Substance Abuse

Chemistry - Liquid Methane?
"The planets Uranus and Neptune are so far from the Sun that temperatures are low enough for atmospheric methane, CH4, to condense and form clouds. How is it possible for methane, a nonpolar substance, to exist in this liquid state?" I want to say it's because nonpolar ...

English comp
I need suggestions on how I could rephrase these without being repetitive and that the point comes across. Thank you (: 1. Alcohol is a dangerous recreational substance that many Americans very much abuse to what their body could take. 2. The reason why people start consuming ...

Chemistry
In the 18th century Lavoisier experimented with oxides, such as CO2 and SO2. He observed that they formed acidic solutions. His observations led him to infer that tot exhibit acidic behavior, a substance must contain oxygen. However, today that inference is known to be ...

character education
What is an obsession? loss of control due to a focus on less significant circumstances enjoyment of something unusual dependence on a physical substance A? What is a compulsion? an addictive substance a behavior that is given undeserved urgency loss of control due to a desire ...

Calculus
In a certain chemical reaction, substance A combines with substance B to form substance Y. At the start of the reaction, the quantity of A present is a grams, and the quantity of B present is b grams. Assume a<b and y≤a. At time t seconds after the start of the reaction, ...

Physics
Calculate the specific heat capacity of substance x from the following data. A container made of the substance x has a mass of 3.6kg and contains 14kg of water. A 1.8kg-piece of the substance x initially at the temperature of 180°C is dropped into the water. The container and...

Science
How does dilution of a substance effects the endpoint of tritation? Like if you dilute a 50 mL of .5 M acid to a 100 mL concentrated .5 M acid, what would be the endpoint? Would it be twice the ending since you need more moles or the same, since you are only adding nonreactive...

Science
1. what is a single replacement reaction A. A reaction in which two or more substances react to form a single substance*** B. A reaction in which one element takes place the place of another element in a compound. C. A reaction in which a compound breaks down into two or more ...

scince
Which of the following is not an example of a physical property of a substance? density combustion solubility freezing point thx

Science
If a substance is a mineral, how could you identify what type of mineral it is? help me!!

AP Chemistry
A 5 gram sample of a gaseous substance occupies 10 L at 48◦C and 697 torr. What is the density of the gas under these conditions? Answer in units of g/L I first started converting the temperature to Kelvin, and the pressure to ATM. I then re-arranged the Ideal gas law to ...

Science
What kind of substance does the following, reflects light, warms up in my hand, flattens out if hit with a hammer, conducts electricity? 1)nonmetal 2)metal 3)metalloid I think #3

Health and PE
What substance in tobacco products causes stained teeth and skin? 1) nicotine 2)carbon monoxide 3)tar 4)menthol I think #1 Thanks

Biology
Which phrase does NOT describe one of the functions of proteins of the plasma membrane? -forming a channel through the membrane -initiating the replication of the genetic material (CORRECT) -binding to a substance to carry it through the membrane -acting as a pump to move ions...

Math
Each ounce of a substance A supplies 2% of the nutrition a patient needs. Substance B supplies 15% of the required nutrition per ounce, and substance C supplies 15% of the required nutrition per ounce. If digestive restrictions require that substances A and C be given in equal...

Math
Each ounce of a substance A supplies 2% of the nutrition a patient needs. Substance B supplies 15% of the required nutrition per ounce, and substance C supplies 15% of the required nutrition per ounce. If digestive restrictions require that substances A and C be given in equal...

science(pls help :D)
Particles have enough energy to break free from each other and can move around freely. What kind of substance is described? A:solid B:liquid C:gas D:Molecule

Science
How does the amount of substance affect the rate at which temperature changes? I will like someone to explain this to me, please.

7th grade PE help
An blank is a substance that helps in the chemical digestion of food Epiglottis Enzymes **** Gallbladder Peristalsis 2.the blank is a small flap of tissue that closes the windpipe when you swallow food to keep you from choking Epiglottis**** Enzymes Gallbladder Peristalsis

Chemistry
The combustion of methanol (CH3OH) forms carbon dioxide and water vapor. A combustion reaction refers to a reaction of a substance with oxygen gas. What is the balanced equation?

biology
1. What is the major component of blood plasma? a. Nutrients b. Ions c. Water d. Gases 2. How many layers of phospholipids does the cell membrane contain? a. 1 b. 2 c. 4 d. 3 3. Which substance stores polysaccharides in plants? a. Sucrose b. Glycogen c. Glucose d. Cellulose 4...

Health
_______is a substance that helps in the chemical digestion of food 1. Epiglottis 2. Enzyme 3. Gallbladder 4. Peristalsis plz help

Health
A(n) ________ is a substance that helps in the chemical digestion of food. A. Epiglottis B. Enzyme C. Gallbladder D. Peristalsis

Chemistry
Re: Qualitative analysis - group 1 cations lab What single reagent could you add that would allow you to differentiate between the members of each pair of solid compounds below? Tell what happens to each substance when the reagent is added and show a balanced net ionic ...

yfoyfoy
A phenomenon where a magnetic material temporarily acquires magnetic properties when a magnet is brought near it, is called magnetic induction. This method is generally used to make temporary magnets. The magnetic properties of the substance disappear the moment the influence ...

chemistry
Examine the information. Isotope B has a half-life of 3 days. A scientist measures out 100 grams of this substance. After 6 days has passed, the scientist reexamines the sample. How much of Isotope B will remain in the sample? 100 grams 63 grams 94 grams 25 grams

chemistry
Connelly cuts a solid object in half. What happens to the mass, volume, and density of the object that Connelly cuts? A)The mass and volume are both divided by two, and the density is divided by four. B) The volume is divided by two, but the mass and density do not change. C) ...

Physical Science
Hello! Thanks for checking my question out! ____ 3. During a phase change, the temperature of a substance (1 point) a) increases. b) decreases. c) does not change. d) increases or decreases. My Answer: C Could someone please check my answer? Thanks! - Da Fash

Physical Science
Hello! Thanks for checking my question out! ____ 4. Water is a compound because it (1 point) a) can be broken down into simpler substances. b) always has two hydrogen atoms for each oxygen atom. c) is made of water atoms joined together. d) both the first and second choices ...

chemistry
2mno4 - + 5h2o2 + 6h= 2mn 2+ + 5o2(gás) + 8h2o You must determine the percentage of hydrogen peroxide (H2O2) in a solution by permangan titration. In an acid solution, the permanganations will oxidize hydrogen peroxide to oxygen gas ......... You must determine the percentage...

chemistry
Examine the statement.  Substances dissolve through three processes: I. ionization II. dissociation III. dispersion  Which of the answer choices correctly lists the dissolving processes that change the identity of a substance? I and II II and III I,II and III I and III I

PE
a(n) _______ is a substance that helps in the chemical digestion of food A epiglottis B Enzyme C Gallbladder D peristalsis

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)=(.98)^t (b) Estimate the half-life of strontium. (c) If presently...

chemistry
Read the scenario. A scientist needs to dissolve a solid in a liquid as quickly and efficiently as possible. Which two methods should she use to get the desired result? heat the solution and use larger chunks of the substance heat and stir the solution cool and stir the ...

Science
Which of the following is a pure substance? Choose all that apply. Choose 2. A)Fruit juice? B)nickel? C)saltwater? D)rust? (Fe2O3) I think it is A and C

chemistry
What is the mass of the organic substance formed by heating of 21.0g of butanoate of ammonium, admitting that the reaction presents a yield of 50%?

chemistry
Examine the information. Element A has a half-life of 10 days. A scientist measures out 200 g of this substance. After 30 days has passed, the scientist reexamines the sample.  How much Element A will remain in the sample 100g 12.5g 50g 25g is it d?

chemistry
Examine the unbalanced equation. CH4 + O2 → CO2 + H2O What is the best classification for the unbalanced equation's reaction, and why? It is a combustion reaction because carbon dioxide (CO2) is emitted as a product. It is a synthesis reaction because O2 displaces carbon (C...

Science
I have two questions and I have answers for them and I don't know if there right or not. The ones that have stars by the answers is the answers I picked. 1. Complete this sentence. If volume remains the same while the mass of a substance ________, the density of the substance ...

science
A substance has a half-life of 10,000 years and an initial mass of 1,000 grams. How many years will pass before only 250 grams of the substance's parent material is left?

chemistry
If a substance has a concentration of 85 mmol/L and gives 3 particles on ionization, what would be its concentration in milliosmoles per liter?

Chemistry
What's the difference between the pressure of a system and the partial pressures in relation to Le Chatelier's principles? I know that when the pressure of the system is increased, it goes to the side with less moles/particles and when decreased it will go to the side with the...

forensic science
What type of substance is the mobile phase in gas chromatography? a polar liquid a nonpolar liquid a mixture of two liquids to create the correct polarity a polar gas an inert gas like nitrogen my answer is an insert gas like nitrogen

physical science
Do the following substance desosolve in water? Give a reason for answer A) Ethanol B) Iodine

physical science
Why does liquid substance have the same meniscus shape

Chemistry
A substance has a molecular formula of C8H10N4O2. The empirical formula is -

science
which substance has a melting point of -219 degree celsius and boiling point of -183 celsius at room temperature 30 degree celsius

chemistry
What would a substance that boils at 70 degrees celsius at 30 kPa be? I'm really not sure on how to find this.

American Government
Which adjective best describes how the Necessary and Proper Clause of the US Constitution is often interpreted by the federal government? A. brittle, meaning that it falls apart when used in a legal argument B. elastic, meaning it can be expanded as needed C. watery, meaning ...

Science
What occurs when atoms link together in a new ways to create a substance different from original substances

CHECK my answers Physical science
1. which of the following should be classified as a suspension? A. soda** B. sand in water C. glass D. milk 2. Which of the following is an of example of a chemical property? A. density B. flammability C. hardness** D. melting point 3. Which state of matter has a definite ...

chemical reactions
Hector has a piece of pure substance that reflects light and bends or dents when dropped. if he takes it to a factory that makes electrical wires it could? a.be turned into wire because non-metals are ductile but not shiny b.not be turned into wire because metals are malleable...

science
1. Which of the following is a reason why a person might want to wear snowshoes if walking a distance in deep snow? (1 point) snowshoes spread the person’s weight out snowshoes reduce the amount of pressure on a given spot snowshoes keep the person from sinking in the snow ...

chemistry
You vaporize a liquid substance at 90.0 °C and 795.0 mmHg. The volume of 0.548 g of vapor is 237 mL. What is the molecular weight (in amu) of the substance?

American Government
Which adjective best describes how the necessary and proper clause of the US Constitution is often interpreted by the federal government? a. brittle, meaning that it falls apart when used in a legal argument b. elastic, meaning it can be expanded as needed*** c. watery, ...

American gov
But freedom to differ is not limited to things that do not matter much. That would be a mere shadow of freedom. The test of its substance is the right to differ as to things that touch the heart of the existing order. . . . If there is any fixed star in our constitutional ...

Chemistry
The enthalpy of formation for a substance corresponds to the enthalpy change for a reaction. Write the specific chemical reaction defining the enthalpy of formation of butane: Just checking to make sure this is correct: 4C + 5H2 ---> C4H10

science
The small structures in the cell that carry out the cell's activities are known as?   The ____ can be described as the basic unit of life The jelly-like substance that fills the cell is called Mitochondria are responsible for

Physics-Heat
Calculate and compare the temperature changes of copper (specific heat of 0.09c/gC) to glass (Specific heat of 0.20 c/gC) when 535 g of each substance are given 1,500c of thermal energy.

Calculus
A tank contains 100 grams of a substance dissolved in a large amount of water. The tank is filtered in such a way that water drains from the tank, leaving the substance behind in the tank. Consider the volume of the dissolved substance to be negligible. At what rate is the ...

Calculus
A tank contains 100 grams of a substance dissolved in a large amount of water. The tank is filtered in such a way that water drains from the tank, leaving the substance behind in the tank. Consider the volume of the dissolved substance to be negligible. At what rate is the ...

science
What property must a substance have if you want to use the substance to make aqueous solution

Math
There was a sample of 550 milligrams of a radioactive substance to start a study. Since then, the sample has decayed by 5.2% each year. Let t be the number of years since the start of the study. Let y be the mass of the sample in milligrams. Write an exponential function ...

advance physics
A carnot’s engine with air as working substance is initially at 3270C and pressure of 12 atmospheres. The volume is one litre to start with. The expansion or compression ratio is 1:6. Find the lowest temperature and efficiency. (γ= 1.4)

Chemistry
Can someone check my answer and let me know me if the are right or wrong. 1. What is the maximum amount of KCl that can dissolve in 600 g of water? (The solubility of KCl is 34 g/100 g H₂O at 20°C.) * 34 g 204 g ***** 2040 g 3. (1 point) If the solubility of a gas in water ...

Science
When a silvery powdery substance was added to boiling beans,the beans get cooked quicker than normal. what may this be?

Chemistry
Can someone check my answer and let me know me if the are right or wrong. If I wrong can you give me the right answer plz. 1. What is the maximum amount of KCl that can dissolve in 600 g of water? (The solubility of KCl is 34 g/100 g H₂O at 20°C.) * 34 g 204 g 56 g******* ...

Chemistry
Which of these will have a volume of 22.4 L at STP? A) 12.01 g of C(s) B) 16.4 g of CH4(g) C) 36.46 g of HCl(aq) D) 32.05 g of CH3OH(l) E) 22.00 g of CO2(g) I am not really sure how to verify that a particular substance will be at these conditions.

Science
1. The current atomic model would be revised if better microscopes were being used to study its structure. better microscopes are invented in the future. new information about an atom’s structure is discovered. ********** a new element is discovered in the future. 2. Melinda...

Science
1. In paper chromatography, is the substance being tested the solute or solvent? Explain your answer.  I think the substance being tested is a solvent. I think this because it is being dissolved to form the ink on the filter paper.  2. A bucket of paint spills on your ...

science
1. In paper chromatography, is the substance being tested the solute or solvent? Explain your answer. I think the substance being tested is a solvent. I think this because it is being dissolved to form the ink on the filter paper. 2. A bucket of paint spills on your classroom ...

Math
The percent P of a radioactive substance remaining after time t weeks is given by the formula p = 100.(0.5)^1/20 the percent to the nearest whole number of radioactive substance remaining after 30 weeks is?

Chemistry
A scientist studying the reaction between decaborane (B10H18) and oxygen mixed 1.00 x 10^2 grams of decaborane with 2.75 x 10^2 grams of oxygen. Compute the masses of all substance present after the reaction went ot completion, generating B2O2 and water as the only products.

Chemistry
A sample of a substance (containing only C, H, and N) is burned in oxygen. 7.961 g of CO2, 1.164 g of H2O and 1.551 g of NO are the sole products of combustion. What is the empirical formula of the compound?

Chem
A sample of a substance (containing only C, H, and N) is burned in oxygen. 7.961 g of CO2, 1.164 g of H2O and 1.551 g of NO are the sole products of combustion. What is the empirical formula of the compound?

Chemistry
A forensic scientist is given a white substance that is thought to be cocaine. The substance is found to have a percent composition: 49.48% C, 5.19% H, 28.85% N, and 16.48% O. What is the empirical formula for this substance? Is it cocaine?

EMpirical and Molecular Formula
A forensic scientist is given a white substance that is thought to be cocaine. The substance is found to have a percent composition: 49.48% H, 5.19% H, 28.85% N, and 16.48% O. What is the empirical formula for this substance? Is it cocaine?

Algebra/Math
How much dry substance is there if we have 150g of 8% of a solution of this substance.

Chemistry
Is the following a properly written thermochemical equation? 2C8H18 + 25O2 → 16CO2 + 18H2O, ΔH = –5,471 kJ/mol No, the equation does not list the enthalpy of reaction. Yes, the equation is correct. No, the equation does not list the states of each substance. No, the ...

chemistry
one of the ingredients in detergent making, lauryl alcohol is extracted from coconut oil. A 5.00 g of this substance is added to 100 g of benzene and the solution boils at 80.78° C. what is the molar mass of lauryl alcohol?

Science
What effect does observing a substance's physical properties have on the substance?

Science
1) If you let all of the liquid evaporate out of the pitcher, would you be able to see the solid particles of the drink mix? Explain. 2)Compare what happens when a geyser erupts to what happens when a tea kettle whistles. 3)Name something made of aluminum and explain why ...

science
if a strong odour is smelt continuously for some time the sensation ofsmell of that substance weakness why?

Check answers please: Health
1. When reading a recipe's ingredients, which substance makes the recipe an unhealthy choice if it is present in a high amount? A. Fiber B. Protein C. Trans fat*** D. Unsaturated fat 2. Of the five food groups, which one should be consumed in the smallest amount? A. Dairy*** B...

science
The orbits of planets being elliptical was one the planetary laws developed by ==A. Kepler. B. Brahe. C. Ptolemy. D. Copernicus. If a car travels from Town A to Town B on one road at different speeds and stops at red lights, knowing the distance between the towns and the ...

Chemistry
What substance will have the lowest surface tension? A) HOCH2CH2OH B) CH2F2 C) CH3CH2F D) CH3CH2OH E) CH3CH2CH CH3CH3

Physical Sciences
Is a diamond a pure substance, homogeneous or heterogeneous mixture?

PE
When reading a recipe ingredients, which substance makes the recipe an unhealthy choice if it is present in a high amount? Parentheses are the ones i answered. 1.fiber 2.protein 3.trans fat 4.(unsaturated fat)

chemistry
which characteristics of solid, a liquid, and a gas are exhibited by each of the following substances? how would you classify each substance? A. a bowl of pudding will be solid and B. a bucketful of sand wiil be solid

Language Arts
I am having a trouble with a few questions. 4. Which of the following sentences from “Poor Fish” does not support the story’s theme of self-loathing and inferiority? A. “But I looked upon myself as being as fragile as glass, as the thinnest glass, in fact, and that was...

math check please
Newton’s law of cooling states that for a cooling substance with initial temperature T0 T 0 , the temperature T(t) T ( t ) after t minutes can be modeled by the equation T(t)=Ts+(T0−Ts)e−kt T ( t ) = T s + ( T 0 − T s ) e − k t , where Ts T s is the surrounding ...

Chemistry
Label the following changes as CHEMICAL or PHYSICAL change 1. Fat reacting with sodium hydroxide 2. Chemical A originally is buoyant in water; after it mixed with HCI, the new substance now sinks in water Label the following reactions as exothermic or endothermic 1. Ammonium ...

Science
Fat reacting with sodium hydroxide Is this a chemical or physical change My answer is chemical is this right answer Chemical A originally is buoyant in water; after it mixed with HCI, the new substance now sinks in water. My answer is physical change. Is this right?

Health
1. To eat more healthful and decrease your calorie intake, MyPlate recommends that you eat breakfast, lunch, and dinner with no snacks in between meals. eliminate starchy vegetables like potatoes, corn, and lima beans that are high in carbohydrates. drink fruit juice for extra...

science questions please answer at least 45minutes
1. The current atomic model would be revised if (1 point) better microscopes were being used to study its structure. better microscopes are invented in the future. new information about an atom’s structure is discovered. a new element is discovered in the future. 2. Melinda...

Chemistry
CuCO3=CuO +CO2. Find the mass of 1mole of each substance taking part in the reaction. (Ar:Cu=64,C=12,O=16). When 31g of CuCO3 is used; 1)how many grams of CO2 is formed. 2) what mass of solid remains after heating.

Physics
A 100 grams mass of a substance has a volume of 150 centmetre cube.Calculate the relative density of the substanc. [density of water pw=1.0gcm^-3]

chemistry
a sample of gaseous substance at 25 degrees Celsius and 0.862atm has a density of 2.6g/l. what is the molecular weight of the substance?

Calculus
A chemical substance is draining from a conical filtering system at a rate of 100 cubic centimeters per minute into a cylindrical storage tank below. The conical filter and cylindrical tank each have a diameter of 60 centimeters, and the height of the cone also measures 60 ...

Chemistry
What is the likely identity of a substance (see Table 10-1) if a sample has a mass of 16.0 g when measured in air and an apparent mass of 15.2 g when submerged in water? Which of the following is it? -copper -gold -lead -aluminum -iron or steal -concrete (Note: Can only select...

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Homework Help: Health