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kondaur [170]
2 years ago
14

Select the correct answer. which tool is used to measure an object’s mass? a. graduated cylinder b. meter stick c. digital therm

ometer d. electronic balance
Chemistry
1 answer:
zavuch27 [327]2 years ago
6 0

The tool or instrument which is used to measure an object’s mass is electronic balance

Mass is a fundamental quantity

<h3>What is fundamental quantities?</h3>

Fundamental quantities can be defined as those physical quantities which forms the basic unit of measurement. They are the quantities upon which other quantities and units are derived from.

Mass is measured in kilograms (kg)

Other examples of fundamental quantities apart from mass are as follows:

  • Length
  • Time
  • Amount of substances
  • Luminous intensity
  • Temperature
  • Magnetic flux

So therefore, the tool or instrument which is used to measure an object’s mass is electronic balance

Learn more about fundamental/physical quantities:

brainly.com/question/23036403

#SPJ1

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rjkz [21]
It is really easy if you look up an electron configuration table (one that looks like a periodic table) and then just go down the rows left to right, top to bottom, and just stop when you get to where the element is on the table.

 1s^2 2s^2 2p^{6}  3s^2 3p^6 4s^2 3d^1^0 4p^3
8 0
3 years ago
3
Mashcka [7]

Answer:

It is 34

Explanation:

4 0
3 years ago
Can somebody help me, please!
zavuch27 [327]

Answer:

Rubidium-85=61.2

Rubidium-87=24.36

Atomic Mass=85.56 amu

Explanation:

To find the atomic mass, we must multiply the masses of the isotope by the percent abundance, then add.

<u>Rubidium-85 </u>

This isotope has an abundance of 72%.

Convert 72% to a decimal. Divide by 100 or move the decimal two places to the left.

  • 72/100= 0.72      or        72.0 --> 7.2 ---> 0.72

Multiply the mass of the isotope, which is 85, by the abundance as a decimal.

  • mass * decimal abundance= 85* 0.72= 61.2

Rubidium-85=61.2

<u>Rubidium-87</u>

This isotope has an abundance of 28%.

Convert 28% to a decimal. Divide by 100 or move the decimal two places to the left.

  • 28/100= 0.28       or        28.0 --> 2.8 ---> 0.28

Multiply the mass of the isotope, which is 87, by the abundance as a decimal.

  • mass * decimal abundance= 87* 0.28= 24.36

Rubidium-87=24.36

<u>Atomic Mass of Rubidium:</u>

Add the two numbers together.

  • Rb-85 (61.2) and Rb-87 (24.36)
  • 61.2+24.36=85.56 amu
4 0
3 years ago
A solution in a dish contains 4.0 grams of salt dissolved in 100 grams of water. If 50 grams of the water evaporates, this is ev
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D. A mixture

If the water is evaporating while the salt remains, it means the two are not chemically bonded and therefore are not a compound.
6 0
3 years ago
Which method would be best to separate a mixture of oil and water?
rosijanka [135]

Answer:

distillation ​

Explanation:

Actually, distillation is used to separate liquids from nonvolatile solids, as in the separation of alcoholic liquors from fermented materials, or in the separation of two or more liquids having different boiling points, as in the separation of gasoline, kerosene, and lubricating oil from crude oil.

7 0
3 years ago
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