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Masteriza [31]
3 years ago
7

Is weathering a physical or chemical change, and why?

Chemistry
1 answer:
kumpel [21]3 years ago
7 0
Weathering would be chemical because it's more natural than physical
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Kepler’s second law of planetary motion states which of the following?
aev [14]
Kepler stated three laws of planetary motion.

First law states that the pathway of a planet is an ellipse with the Sun at one of the foci.

Second law states that an imaginary line joining the Sun and a planet sweeps out equal areas during equal lengths of time.

Third law states that the square of the period of the orbit of a planet is directly proportional to the cube of the length of the distance from the Sun.

Therefore, the answer is that Kepler's second law of planetary motion states that planets cover the same area during equal time periods.
6 0
3 years ago
Write the net ionic reaction that occurs upon the addition of hno3 to a solution which contains methylamine (ch3nh2) and methyla
ra1l [238]
Hello!

First, HNO₃ dissociates in the following way:

HNO₃(aq) → H⁺(aq) + NO₃⁻(aq)

Next, there is a neutralization reaction with Methylamine:

H⁺(aq) + CH₃NH₂(aq) → CH₃NH₃⁺(aq)

Finally, the formed methylammonium ion weakly dissociates in the following way:

CH₃NH₃⁺(aq) + H₂O(l)  ⇄ H₃O⁺(aq) + CH₃NH₂ (aq)

From this sequence of reactions, we can see that the resulting solution would be slightly more acidic than the initial one, as the buffer solution resists the addition of strong acid.

Have a nice day!
4 0
3 years ago
Read 2 more answers
Lead(II) chromate, PbCrO4, is a yellow paint pigment (called chrome yellow) prepared by a precipitation reaction. In a preparati
Roman55 [17]

Answer:

n = 0.1624 moles

Explanation:

n=\frac{m}{M} \\n=\frac{52.5}{323.1937} \\n= 0.1624 mol

8 0
2 years ago
Draw the major organic product formed when the compound shown below undergoes a reaction with hno3 and h2so4.
mrs_skeptik [129]

Answer:

The solution is shown in the attached image to this answer.

Explanation:

The first attached image is the complete question.

The second attached image is the solution to the question.

4 0
3 years ago
Classify each as either matter or not matter
Leto [7]

Answer:

matter

your breath fog steam oxygen helium piece of paper

Explanation:

matter,matter is made up of atoms ,atoms is in practically everything

5 0
3 years ago
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