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Feliz [49]
3 years ago
11

Mei wants to study whether heart rate increases more during certain exercises than during others. She designs an experiment to t

est the heart rates of classmates in the morning and in the evening for three days, immediately after doing jumping jacks, doing push-ups, or running in place. What is the dependent variable in this experiment?
Chemistry
2 answers:
baherus [9]3 years ago
8 0

The change in heart rate is the dependent variable.

postnew [5]3 years ago
7 0
The differing heart rates is the dependent variable. This is because it is dependent on the exercise that will depict the heart rate
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Transcribed image text: Four liquids are described in the table below. Use the second column of the table to explain the order of their freezing points, and the third column to explain the order of their boiling points. For example, select '1' in the second column next to the liquid with the lowest freezing point. Select '2' in the second column next to the liquid with the next higher freezing point, and so on. In the third column, select '1' next to the liquid with the lowest boiling point, '2' next to the liquid with the next higher boiling point, and so on. Note: the density of water is 1.00g/mL .
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3 years ago
How many valence electrons do the noble gases possess?
8090 [49]

Answer:

Have no valence electrons because they are stable.

Thank you.

BY GERALD GREAT

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2 years ago
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4 0
3 years ago
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After you preform your experiment, you determine that the kf value for naphthalene is 6.91 °c/m . you are using 10g of naphthal
Masteriza [31]
Answer is: molar mass of compound is 154,58 g/mol.<span>
m(</span>naphthalene<span>) = 10 g = 0,01 kg.
m(unknown compound) = 1,00 g.
</span>Δ<span>T (solution) = 4,47 °C.
Kf(</span>naphthalene) = 6,91°C/m<span>; cryoscopic constant.
M</span>(unknown compound) = Kf(naphthalene)· m(unknown compound) ÷ m(naphthalene)<span> · ΔT(solution).
M(xylene) = </span>6,91°C/m<span> · 1 g ÷ 0,01 kg · 4,47</span>°C<span>.
M(xylene) = 154,58 g/mol.</span>
8 0
3 years ago
A _____________reaction mechanism involves loss of a leaving group, formation of a ________ followed by the removal of a proton
Molodets [167]

Answer:

The correct answer is Option C (E1) and Option B (carbocation).

Explanation:

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Some other possibilities offered aren't relevant to the procedure outlined. So the above alternative is accurate.

7 0
3 years ago
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