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Black_prince [1.1K]
3 years ago
15

In which of these processes is energy transferred by the motion of cold and hot matter? Choose the correct answer.

Chemistry
1 answer:
liubo4ka [24]3 years ago
8 0
Letter B - Convection
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The energy content of a single serving of rice is 85.0 Cal. What is the energy content in calories?
vampirchik [111]
Hello this answer isn't copied like the other one.

The answer is 85 calories.

Hope this helps.

Have a great day

:D
6 0
3 years ago
Please respond to this question
ki77a [65]

Answer:

Explanation:

im not 100% sure but maybe d

3 0
3 years ago
What is the solution to the problem rounded to the correct number of significant figures? 8.01 × 4.1 = ? A. 32.8 B. 32.84 C. 32.
kicyunya [14]

<u>Answer:</u> The correct option is Option D.

<u>Explanation:</u>

Significant figures are defined as the figures that represent the digits of a number which carry an important contribution to the numerical value, starting with the first non-zero digit. For Example: 105.268 has 6 significant figures because every digit carry its own contribution towards the numerical value.

Whenever there is multiplication, the answer will contain the same number of significant figures as there are in the least precise numerical value.

Significant figures in 8.01  are 3 and that in 4.1 are 2.

So, the answer of these two numerical value will contain 2 significant figures.

8.01\times 4.1=32.841\approx 33

Hence, the correct option is Option D.

7 0
3 years ago
Read 2 more answers
When rolling a number cube 500 times, how many times you expect to get a 3?
andreyandreev [35.5K]

Answer:

\frac{250}{3}

Explanation:

you can expect to get a 3 (theoretically) 1 time every 6 times you roll. A 1/6 chance.

Here's the equation:

\frac{1}{6} =\frac{x}{500}

cross multiply (i think that's what it is called)

500=6x

divide by 6 on both sides:

x=\frac{250}{3} or approx 83 times.

Hope this helps! Lmk if u have more questions <3

3 0
3 years ago
How many moles of c9h8o4 are in a 0.300 g tablet of aspirin?
soldi70 [24.7K]
<span>1.67 x 10^-3 moles Calculate the molar mass of C9H8O4 Carbon = 12.0107 Hydrogen = 1.00794 Oxygen = 15.999 C9H8O4 = 9 * 12.0107 + 8 * 1.00794 + 4 * 15.999 = 180.1558 Now divide the mass you have by the molar mass 0.300 g / 180.1558 g/mole = 1.665225 x 10^-3 Round to 3 significant figures 1.67 x 10^-3</span>
5 0
3 years ago
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