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Oliga [24]
3 years ago
13

Which of the following questions is a scientific question?

Chemistry
2 answers:
JulijaS [17]3 years ago
7 0

Answer:

B

Explanation:

A is an opinion question.

C is another opinion question

D is another opinion question

B is the only acceptible question

vaieri [72.5K]3 years ago
4 0

Answer:

B.

Explanation:

Because the rest are going to be rated on rather than have an exact answer all of the others are relying on opinion.

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Liquid helium boils at –268.93 °C. What is the boiling point of helium on the Kelvin temperature scale?
BARSIC [14]

In order to change celcius to kelvin always add 73 to it leaving you with -195.93

4 0
3 years ago
Read 2 more answers
How many atoms are in 1.204x10^22 moles of arsenic?
ra1l [238]

Answer:

<h2>0.02 moles </h2>

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

n =  \frac{N}{L} \\

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

We have

n =  \frac{1.204 \times  {10}^{22} }{6.02 \times  {10}^{23} }    \\  = 0.02

We have the final answer as

<h3>0.02 moles</h3>

Hope this helps you

7 0
3 years ago
Plants and animals use different energy storage molecules, yet they both use the same mechanism to "burn" their stored energy. H
jek_recluse [69]

Answer:

The breaking of the chemical bonds of a storage molecule transfer energy, no what molecule is stored.

Explanation:

Being successful of plants and animals does not necessary depend on the stored molecule but on the energy being transferred during their breaking.

8 0
3 years ago
Which is not a compound? a)Gold b)water c)sugar D)silicon dioxide
sweet [91]
Gold is an element. Water is made from hydrogen and oxygen, and silicon dioxide is an oxide of silicon, consisting of <span> two oxygen atoms and one silicon</span>
8 0
3 years ago
I am having trouble converting :(
Elza [17]

Answer:

For the first question, to determine the total number of molecules of nitrogen dioxide, first make use of the molar mass of the nonpolar compound and then use that to find the total number of moles and then subsequently after make use of the ratio for the Avogadro's number to determine the total number of molecules of this compound.

For the final question, do the inverse, where we make use of the molecules of the compound and then use Avogadro's number to determine the moles of the compound and then use the same molar mass of the compound to determine the grams of the Nitrogen Dioxide.

3 0
3 years ago
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