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andreev551 [17]

3 years ago

6

In which layer of earth do most earthauakes occur

1 answer:

Masja [62]3 years ago

7 0

Your answer is D. Crust Because earthquakes only happen on the surface. And even underneath ocean waters. Which is what causes tsunamis. But it is still considered the crust.

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4.2g of cerium reacted with oxygen to form 5.16g of an oxide of cerium. Find

olganol [36]

Answer:

CeO₂

Explanation:

Hello!

In this case, since we are given the mass of both cerium and the cerium oxide, we can first compute the moles of cerium and the moles of oxygen as shown below:

$n_{Ce}=4.2gCe*\frac{1molCe}{140.12gCe}=0.03molCe\\$

$m_O=5.16g-4.2g=0.96gO\\\\n_O=0.96g*\frac{1molO}{16.0gO} =0.06molO$

Now, we simply divide each moles by 0.03 as the fewest moles in the formula to obtain the simplest formula (empirical formula) of this oxide:

$Ce=\frac{0.03}{0.03}=1\\\\O =\frac{0.06}{0.03}=2$

Thus, the formula turns out:

$CeO_2$

Regards!

6 0

2 years ago

Please answer question #4

trasher [3.6K]

Answer:

F=500×3 = 1500 N

W = 1500×10 =15000 Nm

7 0

2 years ago

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2 Na + 1 Cl2 → 2 Naci<br> How many grams of NaCl are created from 23,2 grams Cl2?

evablogger [386]

37 grams of NaCl (when I mean equivalent I mean the ratio of the equation is 1:2 for moles or Cl2 and NaCl

3 0

1 year ago

I need help please WOTH this

barxatty [35]

Answer:

Kenma I'll help you! it's B.

Explanation:

I hope I helped you Kenma

7 0

2 years ago

Balance CH4+O2->CO2+H2O

malfutka [58]

Explanation:

I hope this helps Chemistry is so hard and I hate it

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2 years ago