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zheka24 [161]
3 years ago
9

Someone said that we can not use sulfric acid to prepare PbSO4 .

Chemistry
2 answers:
Delvig [45]3 years ago
7 0

Answer:

A. we can use sulfuric acid to prepare PbSO4

DIA [1.3K]3 years ago
6 0
The answer is A
We can use sulfuric acid to prepare pbso4
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Calculate the number of moles of solute in 27.55 mL of 0.1185 M K2Cr2O7(aq).
Zinaida [17]

Answer:

0.01185M = moles/0.02755L

0.02755*0.01185=0.00032647

Explanation:

7 0
2 years ago
If I have 340 mL of a 1.5 M NaBr solution, what will the concentration be if I add 560 mL more water to it?
ipn [44]

Answer:

0.5667 M ≅ 0.57 M.

Explanation:

It is known that the no. of millimoles of a solution before dilution is equal to the no. of millimoles of the solution after the dilution.

It can be expressed as:

(MV) before dilution = (MV) after dilution.

M before dilution = 1.5 M, V before dilution = 340 mL.

M after dilution = ??? M, V after dilution = 340 mL + 560 mL = 900 mL.

∴ M after dilution = (MV) before dilution/(V) after dilution = (1.5 M)(340 mL)/(900 mL) = 0.5667 M ≅ 0.57 M.

5 0
2 years ago
If a gold bar is 16,000 g mass and 800 cm^3 volume what is the density?
ki77a [65]

Answer:

<h3>The answer is 20 g/cm³</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 16,000 g

volume = 800 cm³

We have

density =  \frac{16000}{800}  =  \frac{160}{8}  \\

We have the final answer as

<h3>20 g/cm³</h3>

Hope this helps you

5 0
3 years ago
Heterotrophs are the consumers in the food chain, particularly the herbivores, carnivores, and omnivores. A. True B. False
scoundrel [369]
The answer is A. True
5 0
3 years ago
Read 2 more answers
The process that provides the sun with its energy
SashulF [63]

Answer:

Nuclear fusion

Explanation:

5 0
2 years ago
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