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Tamiku [17]
3 years ago
13

A type of building that absorbs the energy of seismic waves is a fixed-base building. True or False

Chemistry
2 answers:
Doss [256]3 years ago
4 0
I think the answer is False.
dexar [7]3 years ago
3 0
Your answer is <span>False, its base isolated building.</span>
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Lava is extrusive magma. True False
Mars2501 [29]
True 
Extrusive rock is on the surface 
lava and magma are the same thing, except lavas on the surface of the earths crust, while magma is below the crust.
Hope this helps
4 0
3 years ago
I promise its easy points
Pepsi [2]

Answer:

The  theory for the origin and evolution of the universe is the Big Bang model, which states that the universe began as an incredibly hot, dense point roughly 13.7 billion years ago.

7 0
2 years ago
A gaseous hydrogen and carbon containing compound is decomposed and found to contain 82.66% carbon and 17.34% hydrogen by mass.
Doss [256]
For the answer to the question above, I'll show the solution to my answers

moles C = 82.66 g/ 12.0111 g/mol=6.882 
<span>moles H = 17.34 g/ 1.008 g/mol=17.20 </span>

<span>17.20/ 6.882 =2.5 => H </span>
<span>6.882 / 6.882 = 1 => C </span>

<span>to get whole numbers multiply by 2 </span>
<span>C2H5 ( empirical formula Molar mass = 29.062 g/mol) </span>

<span>n = pV/RT = 0.732 x 0.158 L/ 0.08206 x 298 K= 0.00473 </span>
<span>molar mass = 0.275/ 0.00473 =58.1 g/mol </span>

<span>58.1 / 29.062 = 2 </span>

<span>multiply by two the empirical formula </span>

<span>C4H10</span>
3 0
2 years ago
2. Write the formula or name for the following
Tems11 [23]

Answer:

Diphosphorus pentoxide

Carbon dichloride

BCl3

N2H4

Explanation:

These are all covalent compounds. To name covalent compounds, you add prefixes to the beginning of their names depending on what the subscript is of each element. The prefixes are:

1: Mono

2: Di

3: Tri

4: Tetra

5: Penta

6: Hexa

7: Hepta

8: Octa

9: Nona

10: Deca

For example, since the first one is Phopsphorus with a 2 next to it, you add the prefix Di to it.

If the first element in the compound only has one, meaning no number next to it, you do not say mono. This is why we just say "Carbon" for the second one instead of "Monocarbon."

Finally, you always have to end the second element in the compound with "ide." So, "chlorine" becomes "chloride," "oxygen" becomes "oxide," and so on.

7 0
3 years ago
if you could place a piece of solid silver into a container of liquid silver, would it float or sink? Explain your answer
olga55 [171]
Liquid silver is less dense than solid silver, so the solid silver would sink.
5 0
3 years ago
Read 2 more answers
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