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4 years ago

How can substance A and B be compared? Choose all that Apply.

Chemistry

2 answers:

77julia77 [94]4 years ago

7 0

I would say the 1.

2. and 4.

Hope this helps!

Umnica [9.8K]4 years ago

7 0

Answer:

Use the image to complete the sentences.

At left a grid labeled A of regularly arranged orange balls with small movement lines near each. At right a grid labeled B of regularly arranged orange balls with large movement lines near each.

Two different substances, Substance A and Substance B, are in direct contact with each other and are at different temperatures.

The particles in Substance B are vibrating

✔ faster than

the particles in Substance A. This means Substance B is

✔ warmer than

Substance A and conduction will

✔ occur from Substance B to Substance A

Explanation:

edge2020

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You have 16.0 g of some compound and you perform an experiment to remove all of the oxygen, 11.2 g of iron is left. What is the

oksian1 [2.3K]

The empirical formula of this compound is equal to $Fe_{2}O_3$ .

<h3>Empirical formula</h3>

To calculate the empirical formula of a compound, it is necessary to know the number of moles present.

Therefore, we will use the molar mass of iron and oxygen to find the amount of moles, so that:

$MM_O = 16g/mol\\MM_Fe = 55.8g/mol$

$MM = \frac{m}{mol}$

Oxygen

$16 = \frac{4.8}{mol}$

$mol = 0.3$

Iron

$55.8 = \frac{11.2}{mol}$

$mol = 0.2$

Finally, as the empirical formula is composed of integers numbers of moles, just multiply the values by the smallest common factor to transform into an integer, so that:

O => $0.3 \times 10 = 3moles$

Fe => $0.2 \times 10 = 2moles$

So, the empirical formula of this compound is equal to $Fe_{2}O_3$

Learn more about empirical formula in: brainly.com/question/1363167

6 0

3 years ago

This is the chemical formula for acetone: CH32CO. Calculate the mass percent of carbon in acetone.

olga_2 [115]

Answer:

62.07 %

Explanation:

Chemical Formula = (CH3)2CO = C3H6O

Mass of C = 12 g/mol

Mass of H = 1 g/mol

Mass of O = 12 g/mol

Mass of C3H6O = 3(12) + 6(1) + 16 = 58 g/mol

Total mass of C in Acetone = 12 * 3 = 36 g

Mass Percent of C = Total mass of C / Mass of Acetone * 100

Mass percent = 36 / 58 * 100

Mass percent = 62.07 %

6 0

3 years ago

What tests would you use to identify a solution of fecl3

lisov135 [29]

Answer:

A flame test of a colorless solution gives a bright yellow color. When reacted with AgNO, a white precipitate forms that dissolves when HNO, is added.

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2 years ago

How many grams of liquid water are produced when 60 grams of ice melt?

yarga [219]

Answer: 60 Grams of water are produced, because you can't get more than the amount that was in the original ice cube

Explanation:

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3 years ago

If the mass of a material is 76 grams and the volume of the material is 16 cm3, what would the density of the material be? g/cm3

mafiozo [28]

4.8 g/cm3 with sig figs since it's mass/volume you divide 76 grams by 16 cm3

6 0

3 years ago