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Karo-lina-s [1.5K]
2 years ago
5

A chemist has a block of iron metal (density is 7.87 g/mL). They drop the metal into a graduated cylinder containing water, and

find the volume change is 2.50 mL. What is the mass of the block, in grams?
Chemistry
1 answer:
ankoles [38]2 years ago
3 0

Answer:

19.675

Explanation:

the 7.87g/ml is saying that you multiply it 7.87 times the displacement of water 7.87x of 7.87 times the displacement of the water

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What change in volume results if 60 mL of a gas is cooled from 33 C to 5 C?
Eva8 [605]

Answer:

Change in volume on changing temperature from 33^{\circ}C to 5^{\circ}C is 5.49 mL

Explanation:

Initial volume of gas = V = 60 mL

Assuming final volume of gas to be V' mL

Initial temperature = T = 33^{\circ}C = 306 K

Final temperature = T' = 5^{\circ}C = 278 K

The relationship between volume and temperature of gas at constant pressure is shown below

\displaystyle \frac{V}{V'}=\displaystyle  \frac{T}{T'} \\\displaystyle \frac{60\textrm{ mL}}{V'} = \displaystyle \frac{306\textrm{ K}}{T} \\V' = 54.51 \textrm{ mL} \\\textrm{Change in volume} = \left ( V-V' \right ) \\\textrm{Change in volume} = \left ( 60-54.51 \right )\textrm{ mL} \\\textrm{Change in volume} = 5.49 \textrm{ mL}

Change in volume on changing temperature = 5.49 mL

6 0
3 years ago
NH4Cl + AgNO3 → AgCl + NH4NO3
iVinArrow [24]
<h3><u>A</u><u> </u><u>N</u><u> </u><u>S</u><u> </u><u>W</u><u> </u><u>E</u><u> </u><u>R</u><u> </u><u>:</u><u> </u><u>–</u><u> </u></h3>

  • It's a balanced equation!
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7 0
2 years ago
If you were to remove an electron from a sodium atom that has eleven protons, what would be the electrical charge of the ion?
damaskus [11]

Answer:

positive one (+1)

Explanation:

sodium having atomic mass is twenty three (23) and atomic number is eleven (11).

Sodium atom having only one electron in it's outer most shell and it is easy for atom to lose this electron from outer most shell to make itself stable.

So after losing this electron positive charge on the upper right side of the atom will occur with the number of electron lose that is Na+1 .

4 0
3 years ago
An objects volume can be found by adding its mass by its?
Inessa05 [86]
Volume* density=MASS
4 0
3 years ago
Which of the following is a negatively charged particle?
kirza4 [7]

Answer:

B. electron

Explanation:

B. electron

electron is a negatively charged particle

proton is a positively charged particle

7 0
3 years ago
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