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Tomtit [17]
3 years ago
15

Using water, how could you distinguish between the white solids NaCl and BaCO3?

Chemistry
1 answer:
sergij07 [2.7K]3 years ago
5 0
Start with 0.5 g of each - place each in a separate 20 ml beaker containing 10 cc water. Swirl each beaker to dissolve the solids - The KCl will dissolve completely - the lead salt will not.
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How many quarters have the same value as 85 dimes? Use the equality 4 quarters = 10 dimes.?
marissa [1.9K]
There's 34 quarters in 85 dimes.
If you divide 10 by 2 you get 5, every 2 quarters is 5 dimes.
5 0
3 years ago
Read 2 more answers
(a) Consider the reaction of hydrogen sulfide with methane, given below:
Burka [1]

Answer:

a. H2S(g)/t = 1.48 mol/s

CS2(g)/t = 0.740mol/s

H2(g)/t = 2.96mol/s

b. Ptot /t = 981torr/min

Explanation:

a. Based on the reaction:

CH4(g) + 2 H2S(g) → CS2(g) + 4 H2(g)

<em>1 mole of CH4 reacts with 2 moles of H2S producing 1 mole of CS2 and 4 moles of 4H2</em>

<em />

If CH4 decreases at the rate of 0.740mol/s, H2S decreases twice faster, that is 0.740mol/s = 1.48 mol/s

CS2 is produced with the same rate of CH4 because 1 mole of CH4 produce 1 mole of CS2 = 0.740mol/s

The H2 is produced four times faster than CH4 is decreased, that is:

0.740mol/s * 4 = 2.96mol/s

b. With the reaction:

2 NH3(g) → N2(g) + 3 H2(g)

2 moles of ammonia are consumed whereas 1 mole of N2 and 3 moles of H2 are produced.

That means 2 moles of gas are consumed and 4 moles of gas are produced.

If the NH3 decreases at a rate of 327torr/min, the gases are produced in a rate twice faster. That is 327torr/min*2 =

654torr/min

The rate of change of the total pressure is rate of reactants + rate of products:

654torr/min + 327torr/min =

981torr/min

6 0
4 years ago
A cook places a pan of food on a hot stove and leaves it there. When the food is just about done cooking, which of the following
rjkz [21]

Answer:

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Explanation:

7 0
3 years ago
What is the name of the compound BrF
Rashid [163]

Bromine


hope that helps :)

7 0
3 years ago
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Heyyyywooo Friends Can Yall Plz Help
VARVARA [1.3K]

Answer:

I think the answer is A

3 0
3 years ago
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