How many atoms of each element are chemical formula: 3K2O3.
How many atoms of each element are chemical formula: 2H3NCH3Br.
How many atoms of each element are chemical formula: 4Ar2CO3.
Each of them are different questions pls help me!!! I need to get this right to bring my grade up from a C to an A!!!

Answers

Answer 1

Answer:

In 3K2O3 - 6 K atoms, 9 O atoms

In 2H3NCH3Br - 12 H atoms, 2 N atoms, 2 C atoms, 2 Br atoms

In 4 Ar2CO3 - 8 Ar atoms, 4 C atoms, 12 O atoms

Explanation:

All you need to do is multiply the coefficient by the number of each atom in the compound. For example, H3NCH3Br has 1 nitrogen, 1 carbon, 1 bromine, and 6 hydrogens. If you have 2H3NCH3Br, just multiply all those numbers by 2.

Answer 2
3k2o3 = 15

2h3nch3br = 17

4ar2co3 = 24

Related Questions

Plz help, asap, no links and don't put answer if you don't know. Explain also!
True or False: Ice caps in Greenland are composed of salt water.
True or False: Over time, the average ocean salinity has decreased.

Answers

Answer: D

Explanation: Since one of the snakes food sources is the shrew, cutting it off would limit the snake's food causing the population to decrease.

PLEASE HELP ME I BEG IM CONFUSED ON THIS ONLY QUESTION

Answers

Answer:

don't worry i'm not here to waste your points, i just have a question before i answer yours, what are the answer choices in the 'drop box' thing **where you pick the answer for the blanks**

Explanation:

Can you open the drop box thing so we can see the other answer choices please ??

NO LINKS!! :)
BONUS : A 15.0 kg medicine ball is thrown at a velocity of 10.0 m/s to a 60.0 kg person who is a rest on ice. The person catches the ball and immediately slides across the ice. Assume that momentum is conserved and there is no friction. Calculate the velocity of the person AND THE BALL.
P=
m=
v=

Answers

Answer:

The velocity of ball and man after catching ball is  

Explanation:

Since there is no friction and no external force the momentum is conserved .

Here when man catches ball then man and ball move with common velocity .

The velo of the ball and man after catching a ball is common velo

A galaxy contains stars, gas, and dust. This matter must be held together or the galaxy will break apart. What is responsible for holding the stars, gas, and dust together in a galaxy?

Answers

gravity is responsible !

Please work out all the problems on this page, no links, no i don't knows please do not take advantage of me or my points please actually answer these questions

Answers

Answer:

9) C

10) C

11) D

Explanation:

Hope I could help

Can I plz have brainliest

The answer is in the pic

what is the property of every heterogeneous mixture

Answers

Answer:

The property of ever heterogeneous mixture is a solid dissolved into a liquid.

Explanation:

Conservation Activity

What roles do society, politics, and economics play in science?

Discovering the roles and influence that society, politics, and economics have on science takes some practice. Sometimes these influences are not obvious but appear only after a solution to the problem has been tested over a period of time.

These articles describe conservation problems and solutions that were influenced by scientific, social, economic, or political issues. As you read each article, take note of the sections that represent these factors. You will use these articles in your assignment for this lesson.

Using Forests Wisely
Forest
Community Conservation
Sky view of a town

Using both of the articles, answer the questions below. You can answer questions on a word processing document and upload it for grading, or you can submit answers to questions directly. Be sure to review the grading rubric before you begin.

Summarize the scientific information that leads to conservation in each of the articles.
What social issues affected the problem or its solution in each of the stories?
How did economics delay scientists' first attempts for conservation in each story?
Describe the political actions that led to successful conservation in both stories.

Answers

Answer:

Hey mate....

Explanation:

This is ur answer.....

1A) The articles are expressing that how each field affects conservation. They also talk about problems and solutions that are influenced by social, economic or political issues.  

2A) If people stop cutting down as many trees, there won’t be as many resources from that such as paper maybe the cost will go up. Companies will be mad if people stop them from doing business, cutting down trees and making money for example some experiences people had when they confronted companies went like this, "We had chief executives slamming the phone down on us. I even had people threaten to punch me." But there are a lot of good things happening such as a lot of materials are made that FSC certified so you can have a clear conscience.

3A) If people are cutting down trees, then those companies aren’t getting money then they lose job opportunities without people there doing their jobs then no products like paper can be made. Also, if trees aren’t being cut down clearing space places like houses or malls can’t be built there. There are some solutions though like what FSC certified places do is after they cut down a tree they plant a new one in that exact spot.

4A) A lot of countries are becoming FSC certified such as Russia. Just a little bit ago Russia had very little forest that was FSC certified now it's 260,000 sq. km—a quarter of its commercial forests. 40 percent—forest area of Europe and North America certified by the FSC...

Hope it helps you,

Mark me brainliest plss.....

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Answer:

Summarize the scientific information that leads to conservation in each of the articles?

In the article “using forest wisely”, the article states that people have destroyed the forest at an alarming rate. In the absence of trees, the ecosystem will eventually die. Which causes a major issue to not only the animals who lives in the forest but also the world's population nearly a quarter. We all rely on the forest for the air we breathe and the products it provides for us. In the article “community conservation”, the article states the population of the gorillas have been decreasing. A big problem has been Poaching, it has taken a heavy toll only about 700 hundred gorillas remain in the wild.

What social issues affected the problem or its solution in each of the stories?

In the article “community conservation”, the article states there hasn’t been many tourist since there’s been a decrease population of mountain gorillas. Tourist revenues helps to fund conservation work and new infrastructure and enterprises such as tree plantations and animal habitats. In the article “using forest wisely”, the article states that Forest Stewardship Council (FSC) was created so the committee can save the forest with strict regulations and laws. Local workers are employed and  help saving the environment.

Explanation:

What are some things that are composed of only on element?

Answers

Answer:

An aluminium drink can.

24 carat gold.

The helium gas in a balloon that floats upwards.

Cast iron garden railings.

Lead sheeting used by builders on the roofs of houses.

Help-
Help-
Help-
Help?

Answers

I don’t know the exact answer but this information may help. :) The sun transfers energy to the grass by radiation, which they turn into energy through photosynthesis. They have 100% of the energy in a food chain. Energy is transferred between organisms in food webs from producers to consumers. The energy is used by organisms to carry out complex tasks. The vast majority of energy that exists in food webs originates from the sun and is converted (transformed) into chemical energy by the process of photosynthesis in plants.
Energy is transferred into the food chain since the sun produces energy to plants and with that animals eat plants and so on.

Ms. Hunziker’s toaster uses 60 amps of current and has a resistance of 10 ohms. What voltage would be needed for the toaster to operate correctly? plz help ill brainleist

6 volts

600 volts

60 volts

0.6 volts

Answers

The answer is 600 volts because all you have to do is 60x10 thanks! Hope I helped

Darwin was one of the first scientists to express the idea that organisms change over time and that all modern species developed from earlier kinds of life. What is this theory called?

Answers

It’s called the Natural selection
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