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3 years ago

Compare the diameter of the moon to the diameter of the Earth

Chemistry

1 answer:

hichkok12 [17]3 years ago

6 0

Answer:

Ok Hold up. I will answer after I think of question

Explanation:

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A 56 g sample of peanut oil has a volume of 60.9 cm³. Calculate the density of the peanut oil. Remember to use the correct numbe

Ivan

0.92 because Mass divided by Volume = Density

5 0

4 years ago

Read 2 more answers

If 40.0 g of molten iron(II) oxide reacts with 10.0 g of mag-nesium, what is the mass of iron produced

vagabundo [1.1K]

Answer:

$m_{Fe}=23.0gFe$

Explanation:

Hello,

In this case, the undergoing chemical reaction is:

$FeO+Mg\rightarrow Fe+MgO$

Thus, for the given masses of reactants we should compute the limiting reactant for which we first compute the available moles of iron (II) oxide:

$n_{FeO}=40.0gFeO*\frac{1molFeO}{72gFeO} =0.556molFeO$

Next, we compute the consumed moles of iron (II) oxide by the 10.0 g of magnesium, considering their 1:1 molar ratio in the chemical reaction:

$n_{FeO}^{consumed}=10.0Mg*\frac{1molMg}{24.3gMg}*\frac{1molFeO}{1molMg}=0.412molFeO$

Therefore, we can notice there is less consumed iron (II) oxide than available for which it is in excess whereas magnesium is the limiting reactant. In such a way, the produced mass of iron turns out:

$m_{Fe}=0.412molFeO*\frac{1molFe}{1molFeO}*\frac{56gFe}{1molFe}\\ \\m_{Fe}=23.0gFe$

Regards.

8 0

4 years ago

4. The solubility of acetanilide in hot water is 5.5 g / 100 mL at 100oC and its solubility in cold water is 0.53 g / 100 mL at

Triss [41]

Answer:

89,4%

Explanation:

If you have a solutio of 2,5g of acetanilide in 50mL of water and you warm this solution to 100°C you will dissolve all acetanilide because the maximum solubility in 50mL will be:

5,5g / 100mL → 2,75g / 50mL.

Then, if you cold the water to 0°C the solubility in 50mL will be:

0,53g / 100mL → 0,265g / 50mL.

That means you will precipitate:

2,5g - 0,265g = 2,235g of acetanilide

The theoretical percent recovery will be:

2,2365g / 2,5g ×100 = 89,4%

I hope it helps!

7 0

3 years ago

Which of the following is one way creativity can help scientists?

notsponge [240]

Answer:

Creativity can help scientists by leading them to ask more questions about the natural world.

Explanation:

Beacause they use creativity to make up questions about the natural world.

7 0

3 years ago

WILL MARK BRAINLIEST

fenix001 [56]

Answer:

If the planet has a lower orbital radius it means the planets proximity to the sun is farther away. The climate of the planet will be colder than a planet that would have a closer proximity to the sun.

4 0

4 years ago