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dexar [7]
3 years ago
14

_________ deficiency is the developing world’s most common cause of preventable brain damage.

Chemistry
1 answer:
aniked [119]3 years ago
7 0
I believe the answer is A. Iron
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__________ is considered to be the greatest solvent in the world because it can dissolve so many substances.
allochka39001 [22]
The correct answer is c. water. 
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Using two different instruments I measured the length of my foot to be 27 centimeters and 27.00 centimeters. Explain the differe
Sophie [7]

Answer:

As you used two diferent instruments, one is more sensitive than the other.

Explanation:

The sensitivity of an instrument is the minimum amount of magnitude that can be  differentiate a measurement system.

In method A, you got 27 cm, so if in method B, you got 27.00, method B is more sensitive. It's like saying that one system measures more than the other

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In general, what is the effect of increased temperature on the solubility of a gas?
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The physical explanation is that increasing temperature increases the kinetic energy of the gas molecules. Hence, their random motion breaks more intermolecular bonds and the gas is less dissolved in the solvent. In contrast, solid solutes in water have increased solubility with increased temperatures.
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You are given 100 g of a compound. The compound is composed of 37% hydrogen and 63% oxygen. How many grams oxygen are present in
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mass_{oxygen} = \%mass_{oxygen} \times mass_{compound} \\ m = 63\%(100) \\ m = 0.63(100) \\ m = 63 \: grams

<h2>Option d</h2>
7 0
2 years ago
14. What is the actual temperature 3000 km below the surface of the Earth?
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temperature 3000 km below the surface of earth is varied, it's harder to know the actual temperature, it can be found around 3,000 - 3,500 degrees Celsius

7 0
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