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gayaneshka [121]
3 years ago
7

Which of the following substances is a chemical that is made only by chemists?

Chemistry
1 answer:
Rainbow [258]3 years ago
6 0

Answer:

theres nothing there

Explanation:

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Please help, I'm struggling with stoichiometry
rusak2 [61]

Answer:

a) HNO3

b) 26.8g (3 s.f.)

c) 1.29g (3 s.f.)

Please see the attached pictures for full solution.

To balance an equation, ensure that the number of atoms for each element is the same on both sides.

3 0
4 years ago
8. Which type of bond results when one or more valence
Gekata [30.6K]

Answer:

B

Explanation:

8 0
3 years ago
Give me lil reasoning so I know your not lying for points
jeka94

Answer:

0.01 psi

Explanation:

If you look at the data points plotted on the graph, the slope of the line touches 0.1 for the y-axis when it is at 20 for the x-axis.

3 0
3 years ago
A bond formed by electrical attraction between two oppositely charged ions is called
Komok [63]
Ionic bond<span>, also </span>called<span> electrovalent </span>bond<span> , type of linkage </span>formed<span> from the electrostatic </span>attraction between oppositely charged ions<span> in a chemical compound.

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8 0
3 years ago
a helium balloon has a volume of 2.95 liters at 25 c. the volume of the ballon decreased to 2.25 l after it is placed outside on
OleMash [197]

Answer:

The outside temperature is -45.8°C

Explanation:

When a gas keeps on constant its moles and its pressure, we can assume that volume will be increased or decreased as the T° (absolute T° in K).

V1 / T1 = V2 / T2

2.95L/298K = 2.25L / T2

(2.95L/298K ) . T2 = 2.25L

T2 = 2.25L . 298K / 2.95L

T2 = 227.2K

T°K - 273 = T°C

227.2K - 273 = -45.8°C

3 0
4 years ago
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