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2 years ago

15

The most reactive metals are located in which area of the periodic table?

1 answer:

SCORPION-xisa [38]2 years ago

8 0

The answer is b.Far left

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8. which change in state is associated with the heat of vaporization,

rewona [7]

The answer is 2, liquid to vapor because vaporization is the process of liquids to vapors.

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How many h+ ions are present in 65. 5 mL of 0. 722 M sulfuric acid

tangare [24]

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1 year ago

25g of potassium nitrate are dissolved in 100g of water. What is the percent by mass of potassium nitrate?

trapecia [35]

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2 years ago

Is LiOH soluble or insoluble?

riadik2000 [5.3K]

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2 years ago

Ten pints of 15 % salt solution are mixed with 15 pints of 10 % salt solution. What is the

sergij07 [2.7K]

$Concentration\ rate=\frac{mass\ of\ product}{mass\ of\ substance}*100\%\\\\
15\%=\frac{m_1}{ms_1}*100\%\\ms_1=10pints\\
15\%=\frac{m_1}{10}*100\%\\
\frac{15}{100}=\frac{m_1}{10}\ \ |*10\\
m_1=\frac{150}{100}=1,5pints\\\\
10\%=\frac{m_2}{15}*100\%\\
0,1=\frac{m_2}{15}\ \ |*15\\
1,5=m_2\\
Resulting\ solution:\\
ms=ms_1+ms_2=15+10=25pints\\m=m_1+m_2=1,5+1,5=3pints
\\\frac{m}{ms}*100\%=\frac{3}{25}*100\%=12\%$

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2 years ago