CHEMISTRY MIDDLE SCHOOL

the problem say what is the volume (in kL) of 3.7505 x 10^4 mg of iron? Iron has a density of 7.87 g/ml. Use correct significant figures

Answers

Answer 1
Answer: so first find the volume

so 7.78g/ml and (3.7505 times 10^4) grams
therefor we dividde (3.7505 times 10^4) by 7.78 and get how many ml

the answer is 4820.69 ml

kL means kilo lieters
kilo=1000
kL=1000Liters
ml=milileters=1/1000 leiter
1000ml=1L
therfor
1kL=1000L
1000L=1000 times (1000ml)
1000L=1,000,000ml
1kL=1,000,000ml

so to convert to kL divide 4820.69 by 1,000,000
0.00482069
convert to scientifiic notation
4.8 times 10^-3

the answer is 4.8 times 10^-3 kL

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What skills and tools do scientists use?

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Answer:

Scientist use the scientific method to test theories.

Explanation:

Final answer:

Scientists use a range of skills, primarily the scientific method, and tools, such as various lab equipment and technology, to conduct their research.

Explanation:

Scientists use a variety of skills and tools to conduct their research and investigations. The primary skill they possess is the scientific method, a systematic way of understanding the world around us, which involves observation, question formulation, hypothesis testing, data collection, data analysis and conclusion drawing.

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Why are plant cells and animal cells different

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The Plant cell has cell walls to prevent it from basting in case of large amount of water.
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Which of these substances is a compound Carbon
Chlorine
Uranium
Ammonia

Answers

Among the substances listed, ammonia (NH3) is a compound. The option D (ammonia) is the correct option.

Compound Substance

  • A compound substance refers to a type of substance that is composed of two or more different elements chemically combined in fixed proportions. In other words, it is a substance formed when atoms of different elements bond together to form molecules. The elements in a compound substance are chemically bonded, meaning they are held together by chemical forces such as covalent bonds, ionic bonds, or metallic bonds.

Compounds can have various physical forms, such as solids, liquids, or gases, depending on the specific elements and the nature of their chemical bonds. They can also exhibit a wide range of chemical and physical properties, such as melting point, boiling point, density, solubility, and reactivity.

Chemical formulas are used to represent compound substances, indicating the types and numbers of atoms present in a molecule of the compound. For example, the chemical formula for water is H2O, representing two hydrogen (H) atoms bonded to one oxygen (O) atom. Ammonia is composed of nitrogen (N) and hydrogen (H) atoms bonded together. Carbon (C), chlorine (Cl), and uranium (U) are elements rather than compounds.

Therefore, Ammonia which is option D is the correct option.

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Answer:

Ammonia

Explanation:

Ammonia is a inorganic compound that is made up of single nitrogen atom.

Can someone help me pls! Ack I accidently put chemistry. This is math LoL

Answers

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!!!!HELP ASAP 10 points!!!Which of the following families contains liquids, solids, and gases?A. The alkali metals
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C. The halogens
D. The alkaline earth metals

Answers

The halogens is correct

Answer:

C. The halogens

Explanation:
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