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ki77a [65]
3 years ago
15

Find the mass ratios and atomic ratios of the following compounds.

Chemistry
1 answer:
geniusboy [140]3 years ago
3 0
I am typing this to get more answers for one of my tests good luck dawg
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Platinum is one of the most dense elements (d = 21.5 g/cm3). What is the volume of a 10.0 g sample of the metal?
kvasek [131]

Answer:

0.465

Explanation:

To find the volume of a substance, divide the mass by the density.

M/D = V

10.0 / 21.5 = 0.4651163

Then round to 3 significant figures: and the density is 0.465

4 0
3 years ago
Can a solution of Sn(NO3)2 be stored in an aluminum container?
givi [52]
I believe a solution of Sn(NO3)2 can not be stored in an aluminium container because Aluminium is higher in the reactivity series compared to Tin (Sn). Therefore, Aluminium is more reactive than Tin and hence aluminium will displace Tin from its salt forming Aluminium nitrate and Tin metal. Thus storing Tin nitrate in an aluminium container will cause the "eating away' of the container.
3 0
3 years ago
A solution contains 35 grams of KNO3 dissolved in 100 grams of water at 40°C. How much more KNO3 would have to be added to make
Marta_Voda [28]

Answer:

32g

Explanation:

potassium nitrate has solubility of about 67g per 100g of water at 40°C, which means that potassium nitrate solution will contain 67g of dissolved salt for every 100g of water.

since at this temperature, our solution contains  35g of potassium nitrate 100g  of water. The solution will be unsaturated because of the less potassium nitrate.

to make saturated solution,

mass of potassuim nitrate = 67g - 35g

= 32g

which means dissolving another  32g  of potassium nitrate in solution at 40 °C will make saturated solution.

5 0
2 years ago
HELP ASAP I NEED HELP FAST PLEASE
ella [17]

1. C

2. D (I’m not entirely sure)

3.energy can neither be created nor destroyed, only change forms.

4. C

5. A

6. C

I’ve researched and tried to answer these questions correctly.

6 0
2 years ago
Read 2 more answers
A bracelet containing 0.364 mol of metal atoms is 66% gold. How many particles of gold atoms are in the bracelet?
Katyanochek1 [597]

Answer:

129.9g

Explanation:

196.966569 * 0.66 = 129.9g

7 0
3 years ago
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