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FromTheMoon [43]
3 years ago
11

brass paper clips that have a golden color have 33% zinc and 67% copper. paper clips made of brass,which appear more red in colo

r, have almost 90% copper and only 10% zinc. If the paper clips are the same size, which of the following will be different? height, density, shape, or volume
Chemistry
1 answer:
Yuki888 [10]3 years ago
7 0

Answer:

Density

Explanation:

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A student wants to make a 0.150 M aqueous solution of silver (I) nitrate but only has 11.27 g of AgNO3. What volume of the 0.150
Usimov [2.4K]

Answer:

442.3 mL

Explanation:

Remember that Molarity is a measure of concentration in Chemistry and it's defined as the number of moles of the substance divided by liters of the solution:

M=\frac{Moles of substance X}{Volume of the solution}

Then, you can express 11.27 g of AgNO3 as moles of AgNO3 using the molar mass of the compound:

11.27 g AgNO_{3} *\frac{1 mole AgNO_{3}}{169.87 g AgNO_{3}} = 0.06634 moles AgNO_{3}

Then you can solve for the volume of the solution:

Volume of the solution=\frac{Moles of AgNO_{3}}{M} =\frac{0.06634 mol AgNO_{3}}{0.150 M} =0.4423 L = 442.3 mL

Hope it helps!

3 0
4 years ago
There are 50 fish in the pond that have tags. You catch 25 fish, and 5 of them have tags. What is the best estimate of the numbe
sergeinik [125]

Answer: 250


Explanation:


You work this problem by using proportions.


A proportion is the equalization of two ratios.


Here you assume that the ratio of fish with tags to total fish that you catch is the same than the ratio of fish with tags to total fish in the pond.


Mathematically:

  • 5 fish with tag / 25 fish = 50 fish with tag / x
  • 5 / 25 = 50 / x

Solve for x:

  • Multiplication property of equality: x × 5 = 50 × 25
  • Division property of equality: x = 50 × 25 / 5
  • Result: 250
8 0
3 years ago
Read 2 more answers
8
mr_godi [17]

Answer:8

in the respiratory system

a.

Explanation:

7 0
2 years ago
When a paper towel absorbs water, is it a physical or chemical change?
Nonamiya [84]

Answer:

It is a physical change.

Explanation:

6 0
3 years ago
Taryn has a 90-gram sample of ethanol, which has a specific heat of
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7 0
3 years ago
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