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Agata [3.3K]
3 years ago
9

Group 7a of the periodic table contains the

Chemistry
2 answers:
ohaa [14]3 years ago
5 0
A.) Most reactive non-metals
Elis [28]3 years ago
5 0

Answer:

A is the answer.

Explanation:

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Softa [21]
Balanced equation:
Ca(OH)2+H2SO4=CaSO4+2 H20<span />
4 0
3 years ago
Who were the scientists who won the nobel prize for the atomic model?
AleksAgata [21]

Answer:

Here's what I find.  

Explanation:

Many scientists contributed to our model of the atom.

Among those who received the Nobel Prize for their work are:

1906 — J.J. Thomson        — discovery of the electron

1908 — Ernest Rutherford — nuclear model of the atom

1922 — Niels Bohr             — planetary model of the atom

1922 — Albert Einstein      — quantum mechanical model of the atom

1935 — James Chadwick  — discovery of the neutron

4 0
3 years ago
How is pressure affected as depth increases?
Romashka [77]

pressure increases as depth increases.

5 0
4 years ago
A gas that has a volume of 28 liters, a temperature of 45 °C, and an unknown pressure has its volume increased
allochka39001 [22]

Answer:

2.5 atm

Explanation:

V1 = 28L

T1 = 45°C = (45 + 273.15)K = 318.15K

V2 = 34L

T2 = 35°C = (35 + 273.15)K = 308.15k

P2 = 2.0atm

P1 = ?

From general gas equation,

(P1 × V1) / T1 = (P2 × V2) / T2

P2 × V2 × T1 = P1 × V1 × T2

P1 = (P2 × V2 × T1) / (V1 × T2)

P1 = (2.0 × 34 × 318.15) / (28 × 308.15)

P1 = 21634.5 / 8628.2

P1 = 2.5 atm

The initial pressure of the gas is 2.5atm

5 0
3 years ago
your friend offers to show you an intrusive igneous rock. which of the following would you expect to see?
Scorpion4ik [409]
You would expect to see a marble-looking rock
3 0
4 years ago
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