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3 years ago

Please help, timed test, will give brainliest

Chemistry

1 answer:

OlgaM077 [116]3 years ago

4 0

Answer:

The answer to your question is letter B

Explanation:

A.) 2 AgCl + Na2S ⟶ 2 Ag2S + 2 NaCl

Reactants Elements Products

2 Ag 4

2 Cl 2

2 Na 2

1 S 2

This reaction is unbalanced

B.) 2 AgCl + Na2S ⟶ Ag2S + 2 NaCl

Reactants Elements Products

2 Ag 2

2 Cl 2

2 Na 2

1 S 1

This reaction is balanced

C.) AgCl + Na2S ⟶ 2 Ag2S + 2 NaCl

Reactants Elements Products

1 Ag 4

1 Cl 2

2 Na 2

1 S 2

This reaction is unbalanced

D.) 2 AgCl + 2 Na2S ⟶ Ag2S + NaCl

Reactants Elements Products

2 Ag 4

2 Cl 1

4 Na 1

2 S 1

This reaction is unbalanced

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Freezing, boiling, and evaporation are all examples of

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Answer:

the water cycle

Explanation:hope i helped love yall

4 0

3 years ago

Read 2 more answers

State whether each of the following would increase, decrease, or leave the initial pH unchanged and explain your reasoning: Usin

fgiga [73]

Answer:

1. Decrease the pH

2. The pH remains unchanged

3. Decrease the pH

Explanation:

We can calculate the pH of a weak acid using the following expression:

$pH=-log [H^{+} ]=-log\sqrt{Ka \times Ca }$ [1]

where,

Ka is the acid dissociation constant

Ca is the initial concentration of the acid

State whether each of the following would increase, decrease, or leave the initial pH unchanged and explain your reasoning

Using the same weak acid, but having a higher concentration. According to eq. [1], a higher Ca leads to a higher [H⁺] and a lower pH.
Using 80.00 mL of this weak acid instead of 40.00 mL. pH refers to a concentration, which is an intensive property, so it does not change when we change the amount of matter.
Using a different weak acid that has a larger Ka value. According to eq. [1], a higher Ka leads to a higher [H⁺] and a lower pH.

5 0

3 years ago

If 83.6 grams of H2 and 257 grams of N2 react, how many grams of ammonia will be produced?

SSSSS [86.1K]

The mass of ammonia that would be produced is 312.5 g

First, we will write a balanced chemical equation for the reaction

The balanced chemical equation for the reaction is

3H₂(g) + N₂(g) → 2NH₃(g)

This means

3 moles of hydrogen gas reacts with 1 mole of nitrogen gas to produce 2 moles of ammonia.

First, we will determine the number of moles of each reactant present

For Hydrogen (H₂)

Mass = 83.6 g

Molar mass = 2.016 g/mol

Using the formula

$Number\ of\ moles = \frac{Mass}{Molar\ mass}$

Number of moles of H₂ present = $\frac{83.6}{2.016}$

∴ Number of moles of H₂ present = 41.468254 moles

For Nitrogen (N₂)

Mass = 257 grams

Molar mass = 28.0134 g/mol

∴ Number of moles of N₂ present = $\frac{257}{28.0134}$

Number of moles of N₂ present = 9.174181 moles

Since,

3 moles of hydrogen gas reacts with 1 mole of nitrogen gas to produce 2 moles of ammonia

Then,

27.522543 moles of hydrogen gas will react with the 9.174181 moles of nitrogen gas to produce 18.348362 moles of ammonia

∴ 18.348362 moles of ammonia will be produced during the reaction

Now, for the mass of ammonia that would be produced

From the formula

Mass = Number of moles × Molar mass

Molar mass of ammonia = 17.031 g/mol

Mass of ammonia that would be produced = 18.348362 × 17.031

Mass of ammonia that would be produced = 312.49095 g

Mass of ammonia that would be produced ≅ 312.5 g

Hence, the mass of ammonia that would be produced is 312.5 g

Learn more here: brainly.com/question/13902065

3 0

3 years ago

This elememt derived its name from the latin

aniked [119]

There are many elements with a Latin name such as sodium, iron, potassium which all of their symbols refer to their Latin name, hope this helps.

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4 years ago

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Misha Larkins [42]

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3 years ago