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3 years ago

How many formula units are found in 2.10 gram of Mgo? (No units needed.)

Chemistry

1 answer:

disa [49]3 years ago

8 0

Answer:

84.63924

Explanation:

one moles equals 40.30440

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Electronegativities of the elements Be, Mg, Ca, and Sr follow a specific trend within their group. Based on this trend, the atom

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Answer:

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3 years ago

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Which law did the U.S. Congress pass as a response to the Dust Bowl?

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Question 2: Answer is (B), Soil Conservation Act (1936)

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3 years ago

Salt in crude oil must be removed before the oil undergoes processing in a refinery. The

irina1246 [14]

Answer:

$\large \boxed{0.64 \, \%}$

Explanation:

Assume you are using 1 L of water.

Then you are washing 4 L of salty oil.

1. Calculate the mass of the salty oil

Assume the oil has a density of 0.86 g/mL.

$\text{Mass of oil} = \text{4000 mL} \times \dfrac{\text{0.86 g}}{\text{1 mL}} = \text{3440 g}$

2. Calculate the mass of salt in the salty oil

$\text{Mass of salt} = \text{3440 g} \times \dfrac{\text{5 g salt}}{\text{100 g oil}} = \text{172 g salt}$

3. Calculate the mass of salt in the spent water

$\text{Mass of salt} = \text{1000 g water} \times \dfrac{\text{15 g salt}}{\text{100 g water}} = \text{150 g salt}$

4. Mass of salt remaining in washed oil

Mass = 172 g - 150 g = 22 g

5. Concentration of salt in washed oil

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3 years ago

Diana and Kinsey are put in charge of choosing a mascot for their basketball team. There are fifteen players on the team, but Di

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Answer:

The data are inadequate.

Explanation:

In the given question, there are fifteen players on the team.

But Diana and Kinsey survey only the five players on the starting lineup about their favorite mascot.

Based on only a few players out of the total number of players, both Diana and Kinsey can't choose a mascot for the basketball team.

So, the data are inadequate.

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What would be the temperature change if 3.0 g of water absorbed 15 J of heat? Specific Heat capacity of water= 4.18 J/gºC

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Not sure but I think it’s B try it out and double check it

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3 years ago