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Anastasy [175]
4 years ago
12

PLEASE HELP WILL MARK BRAINLIEST!!!!!!!!

Chemistry
2 answers:
Fofino [41]4 years ago
5 0

Explanation:

1. 4×10^5

2. 6×10^-4

3. 2.1995×10^7

4. 5.050×10^-2

5. 7280

6. 0.00003608

7. 940.9

8. 0.0015

Marks as brainest

miv72 [106K]4 years ago
4 0

Answer:

not  sure

Explanation:

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Alina [70]

Answer: I believe its the last one SPHERES.

Explanation:

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3 years ago
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What mass of aluminum sulfate is required to precipitate all of the Ba?? out of 45.0 mL of 0.548 M barium nitrate solution? 3 Ba
Verizon [17]

Answer:

2.82 g

Explanation:

Step 1: Write the balanced precipitation reaction

3 Ba(NO₃)₂ (aq) + Al₂(SO₄)₃ (aq) ⇒ 3 BaSO₄(s) + 2 Al(NO₃)₃(aq)

Step 2: Calculate the reacting moles of Ba(NO₃)₂

45.0 mL (0.0450 L) of 0.548 M Ba(NO₃)₂ react.

0.0450 L × 0.548 mol/L = 0.0247 mol

Step 3: Calculate the moles of Al₂(SO₄)₃ that react with 0.0247 moles of Ba(NO₃)₂

The molar ratio of Ba(NO₃)₂ to Al₂(SO₄)₃ is 3:1. The reacting moles of Al₂(SO₄)₃ are 1/3 × 0.0247 mol = 8.23 × 10⁻³ mol

Step 4: Calculate the mass corresponding to 8.23 × 10⁻³ moles of Al₂(SO₄)₃

The molar mass of Al₂(SO₄)₃ is 342.2 g/mol.

8.23 × 10⁻³ mol × 342.2 g/mol = 2.82 g

5 0
3 years ago
Draw the structure(s) of the branched alcohol(s) with the chemical formula c5h12o.
xxTIMURxx [149]

A<em>nswer:</em>

The possible branched chain structure of alcohols with chemical formula C5H12O are following.

  • 3-methylbutan-2-ol
  • 3-methylbutan-1-ol
  • 2,2-dimethylpropan-1-ol
  • pentan-3-ol
  • 2-methylbutan-1-ol
  • 2-methylbutan-2-ol

Structure:

Please see attachment

Download docx
7 0
4 years ago
3. You have 28.5 grams of Carbon. How many atoms is this?
Anton [14]

1 gram of carbon = 12 atoms ..

As per u r question..

28.5 × 12 = 342..

<h2 /><h2><u>If</u><u> </u><u>this</u><u> answer</u><u> helps</u><u> you</u><u> </u><u>mark</u><u> </u><u>as</u><u> brainlist</u><u>.</u><u>.</u></h2>

6 0
3 years ago
Some properties of liquid water are very different from those of solid water (ice). Explain why freezing is considered a physica
drek231 [11]

Answer:

A chemical change is a change in the chemical makeup of a substance and results in a new substance. Ice and water both have the same chemical makeup - ice is just a different state and has the same atoms but in an expanded form.

Explanation:

8 0
3 years ago
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