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IRISSAK [1]
3 years ago
15

A chemist is identifying the elements present in a sample of seawater. What characteristic of

Chemistry
1 answer:
Fofino [41]3 years ago
7 0

Answer:

the protons

Explanation:

the number of protons is constant for each sample of the element. If the number of protons differs, then it is a different element.

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What is the theoretical yield for 3.14 g of magnesium, and .367 g of magnesium?
Dennis_Churaev [7]

Answer:

Explanation:

i dont know

Magnesium is a chemical element with the symbol Mg and atomic number 12. It is a shiny gray solid which bears a close physical resemblance to the other five elements in the second column of the periodic .

Symbol: Mg

Atomic mass: 24.305 u

Electron configuration: [Ne] 3s2

Atomic number: 12

Melting point: 650 °C

Oxidation number: 2

6 0
3 years ago
Hello guys i wanted to ask if anyone could check my answers please :) 10 points
arlik [135]
The first answer is C, condensation is a physical process and the others are chemical.

The second answer is B, it doesn't change depending on location (the answer you chose)

The third answer is A.

The fourth answer is B. Temperature is an intensive property.

No explanations for the ones you got correct.
7 0
3 years ago
Read 2 more answers
What fuel source is Jan using if she exercises at 85% of her maximum aerobic capacity?
Marina86 [1]

Answer:

Carbohydrates

Explanation:

Increased exercise intensity means the overall need for energy increases. As we increase exercise intensity we increase our glucose uptake and oxidation which far exceeds uptake, indicating that muscle stores of glycogen are being used. At moderate intensities (65%) there is an increased need for muscle glycogen and muscle triglycerides which is fat. At higher levels of intensities (85%) there is an even greater need for energy, and this is met almost solely by an increased uptake of glucose from the blood and from muscle glycogen.

In the case of fats as an energy fuel source at high intensities, increasing levels of intensity increases fat oxidation but once we get into higher levels of intensity, we return to levels of fat oxidation similar to very low intensities.

4 0
3 years ago
Describe how adding the prefix mega to a unit affects the quantity being described
neonofarm [45]

If the prefix mega is added to the unit of the quantity being described, the magnitude of quantity increases by 10^{6} times i.e. 1 million times.

For Example- 1 MW = 1000000 watts


5 0
3 years ago
According to the second law of thermodynamics, energy tends to become more spread out. True or False?
chubhunter [2.5K]
The answer is true. According to the second law of thermodynamics, energy tends to become more spread out 
8 0
3 years ago
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