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Igoryamba
3 years ago
7

After the first steps in writing an equation, the equation is balanced by

Chemistry
1 answer:
kifflom [539]3 years ago
5 0

Answer:

law of conservation of mass

Explanation:

self explanatory

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Which hold more heat for longer period of time ? <br><br> A. Air <br> B. Water
Mandarinka [93]

Answer:

water

Explanation:

The heat capacity of a material, along with its total mass and its temperature, tell us how much thermal energy is stored in a material. ... <u>The result is that the temperature of the water cube is much more stable than the air — the water changes much more slowly; it holds onto its temperature longer.</u>

8 0
2 years ago
Read 2 more answers
A + B -&gt;C<br><br><br>Which situation best describes the effect of a limiting reactant?
anygoal [31]

Answer:

The Limiting Reactant is the reactant that when consumed the reaction stops.

Explanation:

7 0
3 years ago
Anna is excited about conducting her lab today. She takes out her lab sheet and reads over the lab. She goes and gathers all of
trapecia [35]

Answer:

Anna didn't wear a lab coat

Explanation:

The first thing anyone who is to carry out a procedure or an experiment in a lab needs to do when he/she enters a lab is to wear a lab coat. This is a lab safety rule that protects the individual from been affected by spillage that could occur as a result of the experiment been conducted.

From the narration in the question, <u>it is not stated anywhere that Anna wore a lab coat before embarking on her lab procedure</u>.

6 0
3 years ago
Predict Will you find starch in a plant leaf grown in the light? Why?
zimovet [89]

Answer:

You would find starch in a plant leaf.

Explanation:

This is due to the fact that when there is excess energy, it will be stored in plant tissue as starch.

6 0
2 years ago
citric acid has an acid dissociation constant of 8.4 x 10^-4 it would be most effective for preparation of a buffer with a pH of
Sloan [31]

Answer:

(B) 3

Explanation:

Citric acid has an acid dissociation constant (Ka) of 8.4 × 10⁻⁴. When it forms a buffer with its conjugate base (citrate), we can calculate the pH using the Henderson-Hasselbalch's equation.

pH=pKa+log\frac{[base]}{[acid]}

The optimum range of pH is pKa ± 1. The pKa is -log Ka = -log (8.4 × 10⁻⁴) = 3.1. The buffer would be more effective for pH between 2.1 and 4.1, especially around 3.1. So the best choice is (B) 3.

5 0
3 years ago
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