Please check my chem answers! Due in a few minutes!

Please Check My Chem Answers! Due In A Few Minutes!
Please Check My Chem Answers! Due In A Few Minutes!
Please Check My Chem Answers! Due In A Few Minutes!

Answers

Answer 1

Answer:

their correct

Explanation:

your answers are correct


Related Questions

does water in a glass have mass

Answers

Answer:

A glass of water, or 200 grams of water, therefore contains 6.6855 × 1024 water molecules. The total mass of the hydrosphere is about 1.4 × 1024 grams, and thus the total hydrosphere contains about 7 × 1021 glasses of water (with 200 grams of water in each).

Explanation:

Answer:

Just like solids, liquids also have their own characteristic density. ... Just like a solid, the density of a liquid equals the mass of the liquid divided by its volume; D = m/v. The density of water is 1 gram per cubic centimeter. The density of a substance is the same regardless of the size of the sample.

Matter is generally defined as any thing that has mass and occupies spaces. Matter is generally divided into three categories ; solid, liquid and gas. Water is a liquid, water has does have molecules, thus has a mass, and is suspended in an area such as water in glass.

SO YES WATER IN A GLASS HAS MASS :)

Hope this helps ~OwO~

Which of the following statement(s) are true about the atoms of any element?
a) The number of protons in an atom of an element is unique to each element.
b) The number of protons and neutrons in an atom of an element is unique to each element
c) A proton in an atom of one element is identical to a proton in an atom of another element.
d) The number of protons in an atom of an element is the same for all elements.

Answers

Answer:

C

ok please mark me brainlist

Which of the following did federalists oppose?

Answers

Answer:

The Federalists felt that this addition wasn't necessary, because they believed that the Constitution as it stood only limited the government not the people

Which metal would have more luster, zinc (30) or scandium (21)?​

Answers

Answer:

i say zinc would

Explanation:

i think it’s zinc...

ANALYSIS
1. Why are resources like air and water considered to be at risk, even though
they are considered renewable?

Answers

Answer:

The pollution can cause resources to lessen.

Due to pollution, resources like air and water considered to be at risk, even though they are considered renewable.

What is pollution?

Pollution is the presence on an environment or substance, harmful substances that are dangerous to the living organisms found in that environment.

Water and air pollution is a serious risk to human, animal and plant life in the environment.

Therefore, due to pollution, resources like air and water considered to be at risk, even though they are considered renewable.

Learn more about pollution at: https://brainly.com/question/24704410

#SPJ2

An atom has a mass number of 19 and an atomic number of 9. What element is it? What is it’s symbol? How many protons, neutrons and electrons does it have? PLEASE HELP NEED ANSWER ASAP

Answers

Answer:

9 protons 9 electrons and 10 neutron

Explanation:

The atomic number is the number of protons .In a neutral atom,the number of electrons equals the number of protons.Mass number is the sum of the protons and nuetrons of a particular isotope.If you have mass number and atomic number,subtract the atomic number from the mass number to get the number of nuetrons. Mass number- atomic number= number of nuetrons

It has been proposed that mitochondria and chloroplasts are modern descendants of early prokaryotic cells that began to reside and gradually evolve within primitive cells.

Answers

Answer:

mitochondria and chloroplasts both have prokaryotic ribososmes

Explanation:

Mitochondria and chloroplasts are the modern descendants of early prokaryotic cells. These lived in primitive cells and later developed into part of them. This hypothesis is supported because both mitochondria and chloroplasts have their own primitive ribosomes. These two organs contain 70s ribosomes.

HELP ME PLZ
B
A
o
What is represented by letter B?

Answers

Answer:

Barium oxide, BaO, baria, is a white hygroscopic non-flammable compound

Explanation:

so the answer is BARIUM

Solve the following problem and round the correct number of significant
figures?
4.5 x 2.34 = ?

Answers

Answer:

4.5 + 2.34 = 6.8

Sig Figs:

2

Decimals:

1

Scientific Notation:

6.8 × 10ⁿ

Words:

six point eight

Which of the samples pictured is most likely a nonmetal?

Answers

Answer:

c

Explanation:

Answer:

it is c because its a hard one and you should know what that is and it is a nonmetal even if not exactly its to be slightly

Explanation:

A neutral hydrogen atom is a special case as it can accept, remove, OR share
electrons during reactions with other atoms. If the electron is removed from
hydrogen, the remaining positive proton number in the atom is 1 and remaining
negative electron number is?

Answers

Answer:

The remaining negative electron number is 0.

Explanation:

1 - 1 = 0 since hydrogen has exactly 1 electron. The charge must be balanced if it is a neutral atom. The 1 electron got peeled off and the remaining number is 0. That means the hydrogen atom is a proton now.

Why are models and a common set of units important for scientists?

Answers

Answer:

Explanation:

When researching a question in science, we collect data, interpret it, and share the results with other scientists. A common measurement system allows us to make direct comparisons instead of having to know things like how much a certain animal weighs.

What do a hypothesis and scientific law?

Answers

Answer:

If you mean "What is a hypothesis and the scientific law?" than hypothesis means a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation and scientific laws or laws of science, are statements, based on repeated experiments or observations, that describe or predict a range of natural phenomena. The term law has diverse usage in many cases across all fields of natural science.

Answer:

If you mean "What do hypothesis and scientific law have in common" than a hypothesis is a limited explanation of a phenomenon; a scientific theory is an in-depth explanation of the observed phenomenon. A law is a statement about an observed phenomenon or a unifying concept.

1.) What are the chemical properties of matter?

Answers

Answer:

Chemical properties are properties that can be measured or observed only when matter undergoes a change to become an entirely different kind of matter. They include reactivity, flammability, and the ability to rust. Reactivity is the ability of matter to react chemically with other substances.

Explanation:

Your cute btw :)

What are the key differences between dependent and independent variables? *

Answers

Dependent variables are essentially what you are measuring and is kept the same, and the independent variable is what you change in the experiment

12. Which of the following species has the
least mass?
A. Electron C. Hydrogen ion
B. Helium atom D. Neutron
13. The mass number of an element whose
atom contains 13 electrons, 13 protons and
14 neutrons is
A. 13 B. 26 C. 27 D. 40
14. Which of the following elements exhibits
variable oxidation states and forms​

Answers

12.electrons

13.13

14.aluminum has 14 neutron.

Write the noble gas configuration for nickel

Answers

Answer:

[Ar] 3d⁸ 4s²

Explanation:

Atomic number: 28

Symbol: Ni

Atomic mass: 58.6934 u

Anybody know about this chem problem, please anything helps.

Answers

Answer:

B

Explanation:

the second option is right

In which state do the particles have the most energy?

Answers

Answer:

gas

Explanation:

The gas state.

Because they are not confined by a certain place. All the molecules are bouncing off eachother.

An airplane flies 2100 miles in 3hours. What is it’s average speed in miles per hour?

Answers

Answer:

700 miles per hour

Explanation:

[tex]average \: speed \\ = \frac{distance}{time} \\ = \frac{2100}{3} \\ = 700 \: miles \: per \: hour[/tex]

How many years are in 72,000 sec?

Answers

Answer:

72000 seconds equals 20 hours.

Explanation:

______ is a way to slow down the reactions that spoil milk

Answers

Answer:

b. keeping milk cold

Explanation:

The cool temperature in the fridge will stop it from going to any further reactions so it won't get spoilt

d. Keeping milk warm can help in slowing down of the reaction that can spoil milk.

Pasteurization can be defined as the heat treatment process in which the heat is provided to a liquid for example milk to prevent the growth of microbes which are least resistant to the heat. This process destroy the microbes, their spores, and also prevent their colonization.This process is useful in preventing soreness of milk and extends its shelf life. Keeping milk in cold container, in a cold temperature, or away from other sources of food will not help in slowing down the reactions that spoil milk.

Hence, d. Keeping milk warm can help in slowing down of the reaction that can spoil milk.

Learn more about milk:

https://brainly.com/question/22512463

is this enough money for this question


A certain type of frog reproduces sexually and has 36 pairs of chromosomes in each of its body cells. How many chromosomes are in each of the frog’s sex cells?

Answers

Answer:

36

Explanation:

Sex cells are different from body cells. Sex cells are made up of haploid number of cells. A haploid cell is half the original number of cell. When sex cell combines, they fuse and unite the half number of cells to form a single diploid which makes a complete body cell by a series of process.
All sex cells only contains half the number of cells in their parent.

Answer:

The answer is 36 on edgenuity.

WILL MARK BRAINLIEST

8. When the numbers 552. and 38.14 are added the result is:
a) 591
b) 590
c) 5.90 x 10^2
d) 589

Answers

Answer:

b) 590

Explanation:

how many significant figures in 12.030?

Answers

Answer:

5

Explanation:

because the 0 is Sig because there is a point and other numbers

solve find the value of x​

Answers

if this is from a book up the app “slader” it give you the answer and how to solve it :)

Answer:

50

Explanation:

2x+5=105

2x=100

2x/2=100/2

x=50

Does Kumiho the legendary exist??​

Answers

Answer: Deriving from ancient Chinese myths and folklores, a fox that lives a thousand years turns into a kumiho, like its Japanese and Chinese counterparts. It can freely transform, among other things, into a beautiful woman often set out to seduce boys, and eat their liver or heart (depending on the legend).

Hoped that helped!

Answer:

No

Explanation:

The Kumiho is similar to other fox creatures, such as the Japanese kitsune and Chinese Huli jing. Even though they have similar magical abilities and longevity, Kumiho is more malevolent than other fox spirits. Of these long-lived legendary creatures, the Kumiho is the only fox that kills and eats humans. Kumiho is just a myth itś not real and no one has seen this fox so "it" does not exist.

Laboratory equipment is cleaned and properly stored after use primarily so that

Answers

Options are provided in the given question, so the complete question is as follows:

Laboratory equipment is cleaned and properly stored after use primarily so that —

A. chemical products can be measured and recorded as data

B. time is saved in setting up the next experiment

C. toxic materials can be kept in the laboratory

D. the possibility of contamination in the laboratory is minimized

Answer:

D. the possibility of contamination in the laboratory is minimized

Explanation:

After the completion of experiments, all the laboratory equipment should be cleaned and properly stored to minimize the possibility of contamination in the laboratory.

Any contamination in the laboratory can affect the experiment and will not give an accurate result, so it is important to clean and store the equipment properly.

Hence, the correct answer is "D".

Use the drop-down menus to complete the statements.
The
transports water and nutrients throughout the plant.
The
v transports food throughout the plant.
HELPPPP A S A P!!

Answers

Answer:the xylem transports water and nutrients throughout the plant

the pholem transports food throughout the plant.

Explanation:mark brainliest cuz like i gave u the answer lol

Answer:

xylem and pholum

Explanation:i did it on edge hope its right :)

also sorry if i spelled it wrong i have never been the best at grammar

What is the most abundant greenhouse gas released through human activities? a. methane b. nitrous oxide c. carbon dioxide d. sulfur dioxide

Answers

Answer:

C. Carbon dioxide. (C02.)

Explanation:

Hope this helps. :)

Answer:

Carbon dioxide

Explanation:

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