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AleksandrR [38]
3 years ago
12

The longest question in brainly.com!

Chemistry
1 answer:
SpyIntel [72]3 years ago
5 0
1) B. Uniformitarianism
2) A. Relative ages only
3) B. Carbon
4) C. It remains constant
5)A. Superposition
6)C. Unstable; billions
7)A. After the layers have formed
8)D. At the bottom of the stack
9) A.relative

let me know if you need anymore help!
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I need help on this.
mina [271]
The answer would for sure be D
6 0
3 years ago
a nuclide of 64/29 cu absorbs a positron. witch is the resulting atom? (A) 65/29Cu (B) 63/29 CU (C) 64/28Ni (D) 64/30 Zn
Nesterboy [21]

Answer : Option D) Zn^{64}_{30}

Explanation : When a positron is getting absorbed it means it will be e^{+1}_{0} so, the Cu^{64}_{29} will get converted;

So, the whole reaction will be;

Cu^{64}_{29} + e^{+1}_{0} ----> Zn^{64}_{30}.

This will convert the whole element of Cu will get changed into Zn. As, it absorbs by the positron, the atomic number gets increased from 29 to 30.

4 0
3 years ago
Which substance is least soluble at 90°C?
jekas [21]

Answer:

NH3

Explanation:

Which salt is least soluble at 90 degrees Celsius

7 0
3 years ago
(5.0 m3) ( 7.5 mmHg) = (P)(4.0m3)
anzhelika [568]

It looks like we are solving for a pressure.  All that is required is some algebraic manipulation to find our pressure in mmHg.

Given:

(5.0 m³)(7.5 mmHg) = (P)(4.0m³)

Multiply:

37.5 = 4.0P

Divide:

9.375 = P

P = 9.4 mmHg (remember sig figs)

<h3>Answer:</h3>

9.4 mmHg

7 0
3 years ago
Which statements describe Earth's continents? Check all that apply.
kari74 [83]

Answer:

A continent is a large distinct landmass.

There are seven continents on Earth.

Continents cover two-thirds of Earth’s surface.

Explanation:

8 0
3 years ago
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