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4 years ago

Question 4 (1 point)

Chemistry

2 answers:

Alex4 years ago

8 0

Answer:

Wusup,

Your answer is B: Larger than the moon

hope that helps, tell me if u get it right.

Explanation:

Brilliant_brown [7]4 years ago

8 0

Answer:

I put B and it was incorrect, sadly I dont know the correct answer

Explanation:

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kirza4 [7]

Answer:

Calcium bromatum

Explanation:

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3 years ago

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What volume of 1.50 mol/L stock solution is needed to make 125 mL of 0.60 mol/L solution?

Tresset [83]

Chemistry 11 Solutions

978Ͳ0Ͳ07Ͳ105107Ͳ1Chapter 8 Solutions and Their Properties • MHR | 85

Amount in moles, n, of the NaCl(s):

NaCl

2.5 g

58.44 g

4.2778 10 m l

Molar concentration, c, of the NaCl(aq):

–2 4.2778 × 10 mol

0.100

0.42778 mol/L

0.43 mol

The molar concentration of the saline solution is 0.43 mol/L.

Check Your Solution

The units are correct and the answer correctly shows two significant digits. The

dilution of the original concentrated solution is correct and the change to mol/L

seems reasonable.

Section 8.4 Preparing Solutions in the Laboratory

Solutions for Practice Problems

Student Edition page 386

51. Practice Problem (page 386)

Suppose that you are given a stock solution of 1.50 mol/L ammonium sulfate,

(NH4)2SO4(aq).

What volume of the stock solution do you need to use to prepare each of the

following solutions?

a. 50.0 mL of 1.00 mol/L (NH4)2SO4(aq)

b. 2 × 102 mL of 0.800 mol/L (NH4)2SO4(aq)

c. 250 mL of 0.300 mol/L NH4

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What Is Required?

You need to calculate the initial volume, V1, of (NH4)2SO4(aq) stock solution

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3 years ago

During the war where did African-Americans receive the best treatment?

Sindrei [870]

Hope this helps. Sorry of it is long

Answer: military

African Americans received the best treatment in the military during war. Making up about 3/4 of the military, African American soldiers proved their efficiency and ability to serve the country, thus receiving more respect from society than if they were to work in more "common" jobs, for example in a factory. However, while they received the best treatment in the military during the war, African Americans still faced segregation within the units of the military, an important fact to note.

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3 years ago

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Dmitrij [34]

Hello there, the correct answer is:

C.

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3 years ago

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Anon25 [30]

Answer: The concentration of hydrogen gas at equilibrium is $1.648\times 10^{-3}M$