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3 years ago

15

13. which of the following states of matter has no definite shape but does have a fixed volume? a. liquid b. solid c. gas d. ele

ment

1 answer:

lutik1710 [3]3 years ago

5 0

Gas im pretty sure. if not gas then liquid

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Radioactive decay is likely to occur when ... radioactive decay is likely to occur when ... protons break into neutrons and elec

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3 years ago

What is the molarity of a solution that is 26.0% by mass in phosphoric acid, H3PO4, and that has a density of 1.155 g/mL?

steposvetlana [31]

Answer: The molarity of a solution that is 26.0% by mass in phosphoric acid is 3.06 M

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per liter of the solution.

$Molarity=\frac{n\times 1000}{V_s}$

n = moles of solute

$V_s$ =volume of solution in ml

Given : 26.0 g of phosphoric acid in 100 g of solution.

To calculate the moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}=\frac{26.0g}{98g/mol}=0.265moles$

Volume of solution = $\frac{\text {Mass of solution}}{\text {Density of solution}}=\frac{100g}{1.155g/ml}=86.6ml$

$Molarity=\frac{0.265\times 1000}{86.6ml}=3.06M$

Molarity of a solution that is 26.0% by mass in phosphoric acid is 3.06 M

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3 years ago

How many elements in C6H12O6

zysi [14]

Answer:

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there are 3 different elements in sugar. just add up all the letters you see

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anastassius [24]

the correct answer should be a

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