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Delvig [45]
2 years ago
6

Because of friction, some work is always changed into

Chemistry
2 answers:
Arturiano [62]2 years ago
8 0

Answer:

Thermal Energy

Explanation:

I'll give you an example, Rub your hands together. Then touch your face or leg to feel any temperature change. Most likely your hands are warmer.

beks73 [17]2 years ago
5 0

Answer: Heat or Thermal energy

Explanation: Friction causes some work dissipates or converted into heat due to resistance of an object with respect to the surface of motion.

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Cuántos electrones contiene el átomo de helio​
Deffense [45]

Answer: 2:Dos

Explanation:

4 0
2 years ago
A 10.4 g sample of CaSO4 is found to contain 3.06 g of Ca and 4.89 g of O. Find the mass of sulfur in a sample of CaSO4 with a m
andrey2020 [161]

The mass of sulfur in a sample of CaSO4 with a mass of 65.8 g is 15.50g.

<h3>How to calculate mass of an element in a compound?</h3>

According to this question, a 10.4 g sample of CaSO4 is found to contain 3.06 g of Ca and 4.89 g of O.

This means that the mass of sulfur in the 10.4g of CaSO4 is 10.4g - (3.06g + 4.89g) = 10.4g - 7.95g = 2.45g

Next, we calculate the percent ratio of each element in the compound; CaSO4.

  • Ca = 3.06g/10.4g × 100 = 29.42%
  • S = 2.45g/10.4g × 100 = 23.56%
  • O = 4.89g/10.4g × 100 = 47.02%

According to this question, a sample of CaSO4 with a mass of 65.8 g is given. The mass of each element in this compound is as follows:

  • Ca = 29.42/100 × 65.8g = 19.36g
  • S = 23.56/100 × 65.8g = 15.50g
  • O = 47.02/100 × 65.8g = 30.94g

Therefore, the mass of sulfur in a sample of CaSO4 with a mass of 65.8 g is 15.50g.

Learn more about mass at: brainly.com/question/13672279

#SPJ1

5 0
1 year ago
1. Round each of the following numbers to four significant figures, and express the result in scientific notation:
vfiekz [6]

The rounding up of the aforementioned number to four significant figures is as follows: 3.002 × 10²

<h3>What are significant figures?</h3>

Significant figures are figures that contribute to the general and overall value of the whole number.

Significant figures or digits are specifically meaningful with respect to the precision of a measurement.

Although, the original number given in this question has 9 significant figures, the number; 300.235800 can be rounded up to four significant figures as follows:

  • Decimal notation: 300.2
  • No. of significant figures: 4
  • No. of decimals: 1
  • Scientific notation: 3.002 × 10²

Therefore, the rounding up of the aforementioned number to four significant figures is as follows: 3.002 × 10².

Learn more about significant figures at: brainly.com/question/14359464

#SPJ1

3 0
1 year ago
What is the approximate size of solute particles in a solution?
jeyben [28]

Answer:

The answer is B

Explanation:

8 0
3 years ago
Read 2 more answers
When an alkane reacts with an element from group 7a, the reaction is referred to as?
Elena-2011 [213]
Alkanes are saturated hydrocarbon, that is they contain hydrogen and carbon without a double or triple bond between the carbon atoms, e.g. ethane, propane. Group 7a in the periodic table are called halogens e.g chlorine, bromine. Alkanes react with halogens in a reaction called substitution, where halogens replace hydrogen atoms in alkanes.
7 0
3 years ago
Read 2 more answers
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