1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Andrews [41]
3 years ago
12

What SI unit is used to measure the number of representative particles in a substance?

Chemistry
1 answer:
Galina-37 [17]3 years ago
4 0

Answer:

SI unit for number of representative particle is MOLE.

Explanation:

You might be interested in
Water molecules are composed of _________
Nataly [62]
Everything is made of atoms. An atom is the smallest particle of an element, like oxygen or hydrogen. Atoms join together to form molecules. A water molecule has three atoms: two hydrogen (H) atoms and one oxygen (O) atom.
5 0
3 years ago
With respect to a fixed point, motion is defined as a change in-<br><br> A)speed<br> B)position
Arisa [49]

Answer:

With respect to a fixed point, motion is defined as a change in<u> position.</u>

Explanation:

MOTION -:  Motion is described as the fact in which any object or body changes its position over the time with respect to a fixed point .

Motion is defined as displacement, distance, velocity , acceleration, speed , and time in mathematical terms. By linking an observer to a frame of reference and measuring the shift in the position of the body with a change in time relative to that frame, the motion of a body is observed.      

4 0
2 years ago
What is the mass of 19.5 moles of carbon dioxide?
Olenka [21]

Explanation:

mass = moles * molar mass

molar mass of carbon dioxide (CO2) = 12+32 = 44

= 19.5* 44 = 858

proof

moles = mass /molar mass

= 858/44 = 19.5 moles

6 0
3 years ago
A compound is formed by the reaction between magnesium and bromine. What is the chemical formula for this compound?
saul85 [17]

Answer:

Magnesium Bromide

Explanation:

MgBr₂

3 0
2 years ago
What mass of water (in grams) is produced by the reaction of 23.0 g of SiO2?
nikitadnepr [17]

The mass of water produced by the reaction of the 23 g of SiO_2  is 13.8 g.

The given chemical reaction;

4Hf (g)  \ + \ SiO_2 (s) \ --> \ SiF_4(g) \ + \ 2H_2O(l)

In the given compound above, we can deduce the following;

  • molecular mass of SiO_2 = 28 + (2 x 16) = 60 g
  • molecular mass of 2H_2O = 2(18) = 36 g

60 g of SiO_2  --------- 36 g of water

23 g of SiO_2  ------------- ? of water

mass \ of \ water = \frac{23 \times 36}{60} = 13.8 \ g \ of \ water

Thus, the mass of water produced by the reaction of the 23 g of SiO_2  is 13.8 g.

  • <em>"Your question is not complete, it seems to be missing the following information";</em>

In the reaction of the given compound, 4Hf (g)  \ + \ SiO_2 (s) \ --> \ SiF_4(g) \ + \ 2H_2O(l), what mass of water (in grams) is produced by the reaction of 23.0 g of SiO2?

Learn more here:brainly.com/question/13644576

5 0
2 years ago
Other questions:
  • When a runner participates in a marathon, they travel a distance of 26.2 miles. How many kilometers is
    5·1 answer
  • What happens to water as it boils?
    10·2 answers
  • According to the National Institute of Health, ventricular tachycardia is a fast, regular beating of the ventricles that may las
    11·1 answer
  • blank is the energy required for a chemical reaction to take place, and blank is the energy associated with every substance.
    14·2 answers
  • Which is a component of John Dalton’s atomic theory?
    10·2 answers
  • Which are examples of science rather than pseudoscience? Check all that apply. People can get rid of hiccups by holding their br
    11·1 answer
  • What soil particle size has the greatest oxygen holding capacity? What soil particle size has the greatest water holding capacit
    10·2 answers
  • HELP!! PLEASE 10+ points!
    10·1 answer
  • Calculate the temperature, in K, of 2.20 moles of gas occupying 4.10 L at 2.82 atm.
    14·1 answer
  • What best describes these three molecules? they are not isomers. they are structural isomers. they are geometric isomers. they a
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!