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Harrizon [31]
3 years ago
9

Atoms that have become negatively charged by gaining extra electrons are called

Chemistry
1 answer:
VLD [36.1K]3 years ago
4 0

Answer:

CATION

Explanation:

If an atom has an equal number of protons and electrons, its net charge is 0. If it gains an extra electron, it becomes negatively charged and is known as an anion. If it loses an electron, it becomes positively charged and is known as a cation.

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A chemist adds of a iron(III) bromide solution to a reaction flask. Calculate the mass in kilograms of iron(III) bromide the che
vaieri [72.5K]

Answer:

0.246 kg

Explanation:

There is some info missing. I think this is the original question.

<em>A chemist adds 370.0mL of a 2.25 M iron(III) bromide (FeBr₃) solution to a reaction flask. Calculate the mass in kilograms of iron(III) bromide the chemist has added to the flask. Be sure your answer has the correct number of significant digits.</em>

<em />

We have 370.0 mL of 2.25 M iron(III) bromide (FeBr₃) solution. The moles of FeBr₃ are:

0.3700 L × 2.25 mol/L = 0.833 mol

The molar mass of iron(III) bromide is 295.56 g/mol. The mass corresponding to 0.833 moles is:

0.833 mol × 295.56 g/mol = 246 g

1 kilogram is equal to 1000 grams. Then,

246 g × (1 kg/1000 g) = 0.246 kg

3 0
4 years ago
Which is the BEST evidence that a chemical change has occurred?
MaRussiya [10]

d///////////////////////////////

3 0
4 years ago
Wich diagram correctly represents the mass of one chemical reactions
avanturin [10]

Answer:

According to the law of conservation of mass, the mass of the reacting substances is equal to the mass of the product formed during a reaction.

Explanation:

6 0
3 years ago
If the density of nitrogen gas at a certain pressure and temperature is 1.20 g/L, how many moles of nitrogen gas are in 15.0 L.
Irina18 [472]
<h3>Answer:</h3>

0.643 moles

<h3>Explanation:</h3>

We are given;

Density of nitrogen gas as 1.20 g/L

Volume nitrogen as 15.0 L

We are required to calculate the number moles of nitrogen gas;

<h3>Step 1: Determine the mass of nitrogen gas</h3>

We know the density is given by dividing mass by volume.

  • Density = Mass ÷ volume

Therefore, to get the mass;

  • Mass = Density × volume
  • Mass = 1.20 g/L × 15.0 L

        = 18 g

<h3>Step 2: Determine the mass of nitrogen gas </h3>

We know that to get the number of moles, we divide mass by molar mass;

That is, moles = Mass ÷ Molar mass

But, molar mass of nitrogen gas is 28 g/mol

Therefore;

Moles of nitrogen gas = 18 g ÷ 28 g/mol

                                     = 0.643 moles

Therefore, the number of moles of nitrogen gas 0.643 moles

5 0
4 years ago
Do any of u guys know how to do this?
krek1111 [17]
1.)1mps
2)no the slope starts to become steady
3.)there is no motion it stops
6 0
3 years ago
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