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Anuta_ua [19.1K]
2 years ago
10

This formula equation is unbalanced

Chemistry
1 answer:
alexandr402 [8]2 years ago
3 0

Answer:

coefficient is 2

Explanation:

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What is the median of the following set: 2, 4, 6, 8, and 10?
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Answer:9

Explanation:

(3+8+10+15)/4 = 36/4 = 9

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2 years ago
SCIENCE QUEASTION I PUTED IT IN CHEMISTRY BECAUSE BRAINLY HAS NO SCIENCE WILL MARK BRAINLIEST
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#1. The condition of the atmosphere at a certain time and certain place

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3 years ago
Question 7 of 10
nirvana33 [79]

Answer:

I think the answer is D. Temperature affects only the rate of reaction.

7 0
2 years ago
3. How much energy is needed to raise 45 grams of water from 40°C to 115 °C?
Dafna1 [17]

Answer:

Q = 114349.5 J

Explanation:

Hello there!

In this case, since this a problem in which we need to calculate the total heat of the described process, it turns out convenient to calculate it in three steps; the first one, associated to the heating of the liquid water from 40 °C to 100 °C, next the vaporization of liquid water to steam at constant 100 °C and finally the heating of steam from 100 °C to 115 °C. In such a way, we calculate each heat as shown below:

Q_1=45g*4.18\frac{J}{g\°C}*(100\°C-40\°C)=11286J\\\\Q_2=45g* 2260 \frac{J}{g} =101700J\\\\Q_3=45*2.02\frac{J}{g\°C}*(115\°C-100\°C)=1363.5J

Thus, the total energy turns out to be:

Q_T=11286J+101700J+1363.5J\\\\Q_T=114349.5J

Best regards!

5 0
2 years ago
In a polar covalent bond, the distribution of common electrons are
amid [387]

In a polar covalent bond, the distribution of common electrons are not shared evenly due to a greater positive charge from one atom's nucleus.Oct 30, 2016

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2 years ago
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