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Alenkasestr [34]
3 years ago
15

Which statement describes a chemical property that can be used to distinguish between compound A and compound B?

Chemistry
1 answer:
sladkih [1.3K]3 years ago
5 0
(<span>4) A does not burn in air, and B does burn in air is your answer. Flammability is a chemical property while the rest of these are physical properties.</span>
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How many mol of sodium corresponds to 1.0 x 10^15 atoms of sodium?
andrew-mc [135]
The Avogadro number represents the number of units in one mole of a chemical substance.
So to find the mole number of a chemical element, you divide its atom number of the Avogadro number which Na = 6.02*10^23 approx.
So n=N/Na (n=mole number, N=number of atoms, Na=Avogadro number)
n=1.0*10^15/6.02*10^23
n=1.6 * 10^-9

So 1.0*10^15 atoms of Sodium represent 1.6*10^-9 mol.

Hope this Helps! :)
3 0
3 years ago
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according to Boyles law if the initial pressure and volume of a gas were five atm for the pressure and 10 mL for the volume and
maks197457 [2]

Answer:The new volume is 5mL

Explanation:

The formular for Boyles Law is; P1 V1 = P2 V2

Where P1 = 1st Pressure   V1 = First Volume

          P2 = 2nd Pressure V2 = Second Volume

From the question; P1 = 5atm, V1 = 10ml

                                P2 = 2 x P1 (2 x 5) = 10 atm   V2 =?  

Using the Boyles Law Formular;  P1 V1 = P2 V2, we make V2 the subject of formular;  P1 V1/ P2 = V2

∴ 5 x 10/ 10 = 5

∴ V2 = 5mL

5 0
3 years ago
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Best joke get the Brainliest answer 15 points!
Lera25 [3.4K]
Don't trust atoms, they make up everything.


How about chemical workers... are they unionized?
7 0
2 years ago
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Find the element. Plz help!
Hunter-Best [27]

Answer:

Hydrogen.

Explanation:

We see in the nucleus that we have 1 proton and 1 neutron.

The number of protons in the nucleus determines which element it is.

Element with 1 proton is the 1st element on the Periodic Table, Hydrogen.

4 0
2 years ago
What are the solutions to the equation x2 + 4x + 5 = 0?​
dusya [7]

Answer:

-1, -4

Explanation:

x^2+4x+5=0

Factoring, you get:

(x+4)(x+1)=0

To find what x can be, you need to realize what could make this equation true. To set the left side equal to 0, either one of the terms in parentheses must be equal to 0. To do that, x must be the negative of the other term, so that they can cancel each other out. Therefore, x is -4 and -1. Hope this helps!

4 0
2 years ago
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