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Darina [25.2K]
3 years ago
6

I think it’s D but I’m not sure.. Please help!

Chemistry
2 answers:
diamong [38]3 years ago
8 0

Answer:

D.

Explanation:

Weathering, erosion and deposition are processes that can wear a mountain down.

alisha [4.7K]3 years ago
7 0

Answer:   I think it’s D?

Explanation:

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How many moles of sodium must react completely to produce 0.175 moles of sodium
polet [3.4K]

Answer:

You can view more details on each measurement unit: molecular weight of Sodium Nitrate or mol The molecular formula for Sodium Nitrate is NaNO3. The SI base unit for amount of substance is the mole. 1 grams Sodium Nitrate is equal to 0.011765443644878 mole.

Explanation:

5 0
3 years ago
When a 235 92U 92235U nucleus is bombarded by neutrons (10n01n) it undergoes a fission reaction, resulting in the formation of t
r-ruslan [8.4K]

Answer:

139/56 Ba

Explanation:

In writing nuclear equations, there must be a balance of the mass and charge on both sides of the reaction equation. That is, the sum of masses on the lefthand side of the nuclear reaction equation must equal the sum of masses on the righthand side of the nuclear reaction equation. Similarly, the charges on the lefthand side of the nuclear reaction equation must equal the sum of the charges on the right hand side of the nuclear reaction equation.

Hence, the isotope of barium formed in the equation mentioned in the question is 139/56 Ba.

6 0
4 years ago
A chemistry teacher adds 50.0 mL of 1.50 M H2SO4 solution to 200 mL of water. What is the concentration of the final solution? U
Aleks [24]
Hello!

The concentration of the final solution when a<span> chemistry teacher adds 50.0 mL of 1.50 M H2SO4 solution to 200 mL of water is 0,3 M

To calculate that, you'll need to use the dilution law, where initial and final concentrations are M1 and M2 respectively, and initial and final volumes are V1 and V2, as shown below. Keep in mind that the final volume is the sum of the 200 mL of water and the 50 mL of H</span>₂SO₄ that were added by the teacher. 

M2= \frac{M1*V1}{V2}= \frac{1,50 (mol H_2SO_4/L)*50mL}{(50 mL + 200 mL)}=0,3(mol H_2SO_4/L)

Have a nice day!
6 0
3 years ago
Read 2 more answers
Periodic Trends<br>PLEASE HELP ME! I WILL GIVE BRAINLIEST​
xz_007 [3.2K]
Answers:

A) Li

B) Ar

C) Br

D) Ne

E) B
5 0
4 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
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