How many sulfur atoms are there in 400 moles of sulfur?

Please answer

timofeeve [1]

Answer:

1) petroleum, mixture, not found on periodic table

2) hydrogen and helium, mixture, contains "and"

3) iron sulphide, compound, ends with "ide"

4) carbon dioxide, compound, ends with "ide"

5) salt water, mixture, not found on periodic table

6) milk and sugar, mixture, contains "and"

7) silver nitrate, compound, ends with "ate"

8) sodium carbonate, compound, ends with "ate"

9) carbon electrode, mixture, not found on periodic table

10) astatine, element, found on periodic table

11) argon, element, found on periodic table

12) oxidane, compound, contains "ane"

13) iron and sulphur, mixture, contains "and"

14) methane, compound, contains "ane"

Explanation:

5 0

2 years ago

2 What is the gram-formula mass of Ca(OH)2?

Verizon [17]

Answer:

The correct Answer is Number 3 the 74 g per mole ...

7 0

3 years ago

Jodi reacts 6.087 grams of cobalt (mw=58.933) with a solution containing excess gold (iii) chloride and recovers 13.572 g of sol

Makovka662 [10]

The correct answer is reaction 2 most likely occurred in their experiment.

So the given two reactions are as follows:

1) Au³⁺(aq) + Co(s) --> Au(s) + Co³⁺(aq)

2) 2Au³⁺(aq) + 3Co(s) --> 2Au(s) + 3Co³⁺(aq)

Mass of Co = 6.087 g

Molar mass of Co = 58.933 g/mol

Moles of Co = $\frac{6.087 g}{58.933 g/mol}$ = 0.1032

Mass of Au = 13.572 g

Molar mass of Au = 196.967 g/mol

Moles of Au = $\frac{13.572 g}{196.967 g/mol}$ = 0.069

Now based on reaction 1) the molar ratio between Co and Au is 1:1

So as per this reaction 0.1032 moles of Co would produce 0.1032 mole of Au

Again based on reaction 2) the molar ratio between Co and Au is 3:2

So as per this reaction 0.1032 moles of Co would produce $\frac{2 x 0.1032}{3}$ mole of Au

or, As per the second reaction 0.1032 moles of Co would produce 0.0688 moles of Au

8 0

3 years ago

1. Which of the following is one impact that volcanoes had on the early earth?

Slav-nsk [51]

Answer:

Volcanoes absorbed water vapor from the atmosphere and made the planet very dry and difficult to live

on

8 0

3 years ago

Read 2 more answers

How many mL of isopropyl alcohol solution (40% v/v) would contain 2.5 mL of isopropyl alcohol? Report your answer in mL

oee [108]

Answer:

$V_{solution}=6.25mL$

Explanation:

Hello there!

In this case, given the by-volume percent and the volume of isopropyl alcohol as the solute, we can compute the volume of the solution via:

$\% v/v=\frac{V_{solute}}{V_{solution}} *100\%\\\\V_{solution}=\frac{V_{solute}}{\% v/v} *100\%$

Now, we plug in the given data to obtain:

$V_{solution}=\frac{2.5mL}{40\%} *100\%\\\\V_{solution}=6.25mL$

Best regards!

5 0

3 years ago