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lorasvet [3.4K]
3 years ago
15

1. What is energy measured in? 2. What should you consider when choosing which food you eat each day? 3. Name some energy stores

Chemistry
1 answer:
Serggg [28]3 years ago
8 0

Answer:

1. energy is measured in joule 2. the nutritional value of the food. 3. sources of energy are hydroelectric power, dry cell ,.dynamos

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What is the oh- in a solution with a poh of 5.71
Rudik [331]

Answer:- The hydroxide ion concentration of the solution is 1.95*10^-^6 .

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pOH=-log[OH^-]

When pOH is given and we are asked to calculate hydroxide ion concentration then we multiply both sides by negative sign and take antilog and what we get on doing this is:

[OH^-]=10^-^p^O^H

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So, the hydroxide ion concentration of the solution is 1.95*10^-^6 .



3 0
3 years ago
An ice cube is placed in 80 mL of 70oC water. When the ice melts the temperature of the water is 60oC. a. How much energy was ne
tigry1 [53]

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800 degrees C g, I found this answer by using the formula to find how much energy was need to melt the ice. First you figure out the temperature change of ur ice (starting temp and ur final temp), and then you times that with the mass of the water.

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