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Amiraneli [1.4K]
4 years ago
15

The recommended daily requirement of calcium is1,000 mg. Tap water in a Midwestern city contains approximately 150 mgCa/L. A per

son living in the city who drinks two liters of water in oneday would receive ________ percent of his/her RDA of calcium.
A. 3
B. 7.5
C. 15
D. 30
Chemistry
1 answer:
madam [21]4 years ago
5 0

The answer is D. 30 percent

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How many milliliters of a 0.205 M solution of glucose, C6H12O6, are required to obtain 150.1 g of glucose?
jekas [21]

Answer:

4050 mL

Explanation:

Given data:

Mass of glucose = 150.1 g

Molarity of solution = 0.205 M

Volume of solution = ?

Solution:

Molarity  = number of moles of solute / L of solution.

Now we will calculate the moles of sugar first.

Number of moles = mass/ molar mass

Number of moles = 150.1 g/ 180.156 g/mol

Number of moles = 0.83 mol

Now we will determine the volume:

Molarity  = number of moles of solute / L of solution.

0.205 M = 0.83 mol / L of solution.

L of solution = 0.83 mol / 0.205 M

L of solution = 4.05 L

L to mL conversion:

4.05 L × 1000 mL / 1 L = 4050 mL

7 0
4 years ago
The food we eat can be classified into three groups called​
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3 years ago
For the reaction...
MAVERICK [17]

Answer:

A: Shift to the left

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One mole of carbon, sulfur, and aluminum, respectively. Which jar contains the most atoms?
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Explanation:

this is correct

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3 years ago
Read 2 more answers
Difference between fluids and nonfluids
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Answer:

All liquids are fluids but not all fluids are liquids. Fluids basically describe anything that can flow as a result of a difference in pressure between two points. Liquids on the other hand are a subset of fluids. Liquids are the incompressible fluids. These are the fluids who's density does not change sharply with pressure.

Gases are also fluids, they form the compressible fluids. They do flow as a result of difference in pressure between two points but at the same time they can be compressed or expanded. Their density fluctuates with pressure.

Hence fluids consist of 2 mutually exclusive groups of compressible and incompressible fluids. Liquids are the incompressible fluids and hence form a subset of the more general term fluid.

5 0
3 years ago
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