CHEMISTRY HIGH SCHOOL

The metric unit of force is theA. newton.
B. kilogram.
C. gram.
D. nanometer.

Answers

Answer 1
Answer: (The answer is A.newton) For example, the SI unit of force, the newton, is defined to be the force that accelerates a mass of one kilogram at the rate of one meter per second per second. This means the newton is equal to one kilogram meter per second squared, so the algebraic relationship is N = kg.

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The atomic number of an atom will always identify the amount of protons in its nucleus. If the atom is neutral, what else is identified by the atomic number? A. the number of neutrons in the atom B. the most common isotope of the atom C. the atomic mass of the atom D. the number of electrons in the atom
If 62.0 grams of magnesium metal (Mg) react with 55.5 grams of oxygen gas (O2) in a synthesis reaction, how many grams of the excess reactant will be left over when the reaction is complete? Be sure to write out the balanced equation for this reaction and to show all of your work.
12a. Do i need to find the morality of each ion in the solution to get to the moles? Or do i just do AlCl3
In the chemical reaction in which sucrose is heated and decomposes to form carbon dioxide and water, which of the following is a reactant?a. sucrose c. water b. carbon dioxide d. heat
A detailed explanation, one paragraph of the colligative property being discussed and why that property changes the way that it does when the amount of solute is increased. A detailed description, at least one paragraph, of a real-world application of the colligative property, including an explanation of how this application of the colligative property is important or useful to those affected. The real-world example must be one that was not mentioned in the lesson.

Calculate the number of moles56.75 g of Al(NO3)3
8.35 g of Al2(SO4)3
3.8 g of FeSO4

Answers

number of moles = mass /molar mass

What term describes matter that is a substance made of different kinds of atoms bonded together?

Answers

compounds or molecules

Answer:

The actual answer is compounds from the science notebook

Explanation:

Iron has a density of 7.86 g/cm3 (1 cm3=1 mL). Calculate the volume (in dL) of a piece of iron having a mass of 4.01 kg . Note that the density is provided in different units of volume and mass than the desired units of volume (dL) and the given units of mass (kg). You will need to express the density in kg/dL (1 cm3 = 1 mL) before calculating the volume for the piece of iron.

Answers

510.17 cm³ is the volume of Iron has a density of 7.86 g/cm3 (1 cm3=1 mL) and has a mass of 4.01 kg.

What is density?

Density is the amount of mass of a substance present per volume of the cubic centimeter and it is the ratio of the mass of a substance to the volume of the substance with a unit centimeter cube.

The Iron has a density of 7.86 g/cm³ and mass of 4.01 kg so,

mass in gram = 4.10 / 1000 = 0.041

Density = mass/volume

Substituting the value in the equation,

volume =  0.041 /7.86 g/cm³

volume = 510.17 cm³

Therefore, the volume of Iron has a density of 7.86 g/cm3 (1 cm3=1 mL) and has a mass of 4.01 kg is 510.17 cm³.

Learn more about Density, here:

brainly.com/question/15164682

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4.01 kg in grams :

4.01 x 1000 = 4010 g

Density = mass / volume

7.86 = 4010 / volume

Volume = 4010 / 7.86

Volume = 510.17 cm³ 

hope this helps!

Cranberries and grapes may have therapeutic value. A cranberry company obtained the patent for a process to extract the oil from cranberry seeds. According to the patent, this oil can be used to treat breast cancer or to reduce its incidence. The oil can be used in drinks and foods. A grape juice company claims to have evidence that certain grapes have health benefits ranging from improving cardiovascular health to improving cognitive brain function in the elderly. These claims will be tested by the Food and Drug Administration (FDA) before the companies are allowed to market their products for “treating” ailments or “improving” health. Until then, the companies can describe that their products “help to maintain” or “support” health. Until studies support their claims, the companies cannot ascribe direct health benefits to their products.Why would the FDA perform tests when a cranberry company and a grape company have already conducted research on the same products?

A. The FDA is the only organization that can test if health actually improves.

B. Tests that are performed by any company which benefits financially are considered unreliable.

C. The FDA tests give reliability to the results of improved health obtained by each company.

D. Tests performed by the FDA follow established scientific methods, but those performed by companies do not.

Answers

Answer is: C. The FDA tests give reliability to the results of improved health obtained by each company.

The FDA (The Food and Drug Administration) is a federal agency of the United States Department of Health and Human Services.

The FDA controls food safety, tobacco products, dietary supplements, prescription, pharmaceutical drugs, vaccines, biopharmaceuticals, blood transfusions, medical devices, electromagnetic radiation emitting devices, cosmetics and animal food.
The answer is D because the FDA they make sure all edible items are healthy not the company itself hope this helps :)

How would I go about solving this problem? Sodium bicarbonate reacts with sulfuric acid to form sodium sulfate, carbon dioxide, and water. Calculate the mass od sodium bicarbonate necessary to produce 1.75 g of carbon dioxide gas.

Answers

The first thing you need to do with problem of this kind is to write the chemical equation. This would help you in calculations later. First, convert how many moles are there in 1.75g of carbon dioxide. Then, from the chemical equation you will know how many moles of sodium bicarbonate formed with 1 mole of carbon dioxide. Then convert the moles of sodium bicarbonate to grams using the molecular weight of the compound. You now have your answer. 

Which of the following is NOT a natural toxin that can contaminate food?a. Ciguatera
b. Methyl Mercury
c. Aflatoxins
d. Dioxins

Answers

Option b. Methyl Mercury (quick silver)

It is a metal that is liquid at room temperature. It's a poisonous mercury. it forms when bacteria react with mercury in water, soil, or plants. It's been used to preserve grain that is fed to animals. It's used in fluorescent lights, batteries, polyvinyl chloride and latex paint.
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