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2 years ago

Which statement best describes John Dalton’s use of creativity in his work?

Chemistry

2 answers:

Rina8888 [55]2 years ago

5 0

Answer:

its A) He reinterpreted and retested Joseph Proust’s results.Explanation:

bekas [8.4K]2 years ago

4 0

Answer:

A the answer is A

Explanation:

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If you added 15,000 calories to 2.0 L of water that was at 25.0 degrees C, what temperature would it be at when you finished?

rewona [7]

Answer:

When we finish, the temperature would be 32.5℃

Explanation:

Density of water = mass/volume

So,

Mass of water = Density × Volume

$\\\\$=1.0 \times 2.0 L$\\\\$=1.0 \frac{g}{m L} \times 2000 m L$\\\\$\quad=2000 g$$

$Q=m \times c \times \Delta T$

where

$\Delta T$ = Final T - Initial T

Q is the heat energy in calories

c is the specific heat capacity (for water 1.0 cal/(g℃))

m is the mass of water

plugging in the values

$15000 \mathrm{Cal}=2000 \mathrm{g} \times 1.0 \frac{\mathrm{cal}}{\mathrm{g}^{\circ} \mathrm{C}} \times \Delta T$

$\\$\Delta T=\frac{15000 \mathrm{cal}}{2000 \mathrm{g} \times \frac{1.0 \mathrm{cal}}{g^{\circ} \mathrm{C}}}$\\\\$\Delta T=7.5^{\circ} \mathrm{C}$$

Final T = ∆T + Initial T

= 7.5℃ + 25℃ = 32.5℃ (Answer).

5 0

2 years ago

Help asap thank u!!!!

9966 [12]

I think the answer is the last answer at the bottom

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2 years ago

Calculate the pH of a hydrochloride acid solution, HCl, whose hydronium ion (H3O)+ concentration is 8.29 X 10-4 M.

deff fn [24]

Answer:

Explanation:

Calculate the pH of a hydrochloride acid solution, HCl, whose hydronium ion (H3O)+ concentration is 8.29 X 10-4 M.

Note: answer should have three significant figures

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2 years ago

How much does one molecule of ethane (C2H6) weigh? anwser in units of g/molec.

Sladkaya [172]

30.07 g/mol (that’s grams per mole)

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3 years ago

Which materials accept a charge better than others

IceJOKER [234]

Answer:

need the options

Explanation:

no options

8 0

1 year ago

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