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3 years ago

When you move one of the bonding pairs of a molecule closer to another one, what is the effect?

Chemistry

1 answer:

Dennis_Churaev [7]3 years ago

3 0

Answer:

They repel due to a force of repulsion

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A 0.500-g sample of chromium metal reacted with sulfur powder to give 0.963 g of product. Calculate the empirical formula of the

IgorC [24]

Answer: The empirical formula for the given compound is $Cr_2S_3$

Explanation : Given,

Mass of product = 0.963 g

Mass of Cr = 0.500 g

Mass of S = 0.963 g - 0.500 g = 0.463 g

To formulate the empirical formula, we need to follow some steps:

Step 1: Converting the given masses into moles.

Moles of Cr = $\frac{\text{Given mass of Cr}}{\text{Molar mass of Cr}}=\frac{0.500g}{52g/mole}=0.00962moles$

Moles of S = $\frac{\text{Given mass of S}}{\text{Molar mass of S}}=\frac{0.463g}{32g/mole}=0.0145moles$

Step 2: Calculating the mole ratio of the given elements.

For the mole ratio, we divide each value of the moles by the smallest number of moles calculated which is 0.00962 moles.

For Cr = $\frac{0.00962}{0.00962}=1$

For S = $\frac{0.0145}{0.00962}=1.5$

To make in a whole number we are multiplying the ratio by 2, we get:

The ratio of Cr : S = 1 : 1.5

The ratio of Cr : S = 2 : 3

Step 3: Taking the mole ratio as their subscripts.

The ratio of Cr : S = 2 : 3

Hence, the empirical formula for the given compound is $Cr_2S_3$

8 0

4 years ago

Which statements describe how Becquerel, the Curies, and other scientists contributed to the cumulative understanding of radioac

kow [346]

Answer:

The Curies established that radioactivity is a property of an atom that does not change if changes occur to the physical or chemical properties of the atom.

and

Hans Geiger invented a method for detecting and measuring radioactivity.

Explanation:

i just did it rn

8 0

4 years ago

Change 32L of carbon dioxide into moles of carbon dioxide

kaheart [24]

32L —> 32000g —> 727.116 Moles (rounded)

7 0

3 years ago

When hydrochloric acid is poured on limestone, the mixture fizzes, releasing a colorless, odorless gas. The equation for this ch

ruslelena [56]

Answer:

pretty sure its B

Explanation:

7 0

2 years ago

The identity of an element is defined by its number of _______________. For example, every atom of Carbon has ___ protons and on

DiKsa [7]

In this order.
protons. 6. carbon atom. different. isotopes. atomic masses. same. chemical reaction. reactions. electrons. neutrons.

7 0

3 years ago