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nadya68 [22]
3 years ago
14

[

Chemistry
1 answer:
GaryK [48]3 years ago
6 0

Answer: 44

Explanation: Because it's easy

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A student prepares a solution by dissolving 60.00 g of glucose (molar mass 180.2 g mol-1) in enough distilled water to make 250.
anyanavicka [17]

Answer:

1.332 Molar is the molarity of the glucose solution.

Explanation:

Molarity of the solution is the moles of compound in 1 Liter solutions.

Molarity=\frac{\text{Mass of compound}}{\text{Molar mas of compound}\times Volume (L)}

Mass of glucose = 60.00 g

Molar mass of glucose = 180.2 g/mol

Volume of the solution = V = 250.0 mL = 0.250 L

(1 mL  = 0.001 L)

Molarity=\frac{60.00 g}{180.2 g/mol\times 0.250 L}=1.332 mol/L

1.332 Molar is the molarity of the glucose solution.

4 0
3 years ago
If a particular ore contains 58.5% calcium phosphate, what minimum mass of the ore must be processed to obtain 1.00 kg of phosph
alina1380 [7]
Calcium Phospate formula: Ca3(PO4)2

Atomic weight:
Ca = 40  ; P = 31 ; O = 16

Ca3  = 40 * 3 = 120
P = 31
O4 = 16 * 4 = 64
(PO4)2 = (31 + 64) * 2 = 95 * 2 = 190

Ca3(PO4)2 = 120 + 190 = 310 g/mol

31/310 = 10% P in the calcium phospate

1.00kg * 1000 g/kg = 1000 g of phosphorus.

1000 g / 10% = 10,000 g of calcium phosphate

10,000 g / 58.5% = 17,094 grams of ore.

The minimum mass of the ore should be 17,094 grams or 17.094 kg.
5 0
3 years ago
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A preliminary untested explanation that tries to explain how or why things happen in the manner observed is a scientific
icang [17]
It is a scientific hypothesis. A scientific hypothesis must be testable, however there is a significantly more grounded necessity that a testable speculation must meet before it can truly be viewed as logical. This foundation comes essentially from crafted by the rationalist of science Karl Popper, and is called "falsifiability".
3 0
4 years ago
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How do u convert 0.171 tsp into drops
motikmotik
1 teaspoon contains <span>76.002146 drops

To know how many drops do 0.171 teaspoon contains, we can simply use cross multiplication as follows:
number of drops = (0.171 x </span><span>76.002146) / 1 = 12.9963 drops</span>
8 0
4 years ago
Which of the following is a correctly balanced reaction equation?
kompoz [17]

Answer:

CaCl2 + 2NaOH -> 2NaCl + Ca(OH)2

Explanation:

6 0
2 years ago
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