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kvv77 [185]
1 year ago
10

There are 2 gasses, A, B. They weigh 2.46g and 0.5g respectively, and the Volume of A is 3 times the volume of B. A has a molecu

lar mass of 28. What could A be?
(A) NO2
(B) N2O
(C) N2O4
(D) N2O5
Chemistry
2 answers:
dangina [55]1 year ago
8 0

Answer:

B

Explanation:

molecular mass of B is 28

Mandarinka [93]1 year ago
7 0

Answer:

(B) N2O is the answer.....................

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ivann1987 [24]
Alpha particle has a mass of 4 (Two protons and two neutrons)
Neutron has a mass of 1
Beta particle has a mass of about 0 (Electron)
Proton has a mass of 1
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A student wants to determine whether or not an unknown substance is a metal by testing its physical properties. Which of the fol
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An aqueous solution contains the amino acid glycine (NH2CH2COOH). Assuming that the acid does not ionize in water, calculate the
zmey [24]

Answer:

Molality for this solution is 0.98 mol/kg

Explanation:

ΔT = Kf . m . i

Freezing point depression, here

ΔT =  Freezing point of pure solvent - Freezing point of solution

i = Van't Hoff factor.

This solute, the amino acid glycine does not ionize, so the i in this case is 1

Let's replace the data given

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7 0
3 years ago
when 0.15 moles of sodium reacts with 0.30 moles of oxygen what is the moles of the product formed when one reagents is used in
Mamont248 [21]

Answer:

0.075 moles of product formed.

Explanation:

Given data:

Number of moles of oxygen = 0.30 mol

Number of moles of oxygen = 0.15 mol

Number of moles of product formed = ?

Solution:

Chemical equation:

4Na + O₂       →    2Na₂O

Now we will compare the moles of Na₂O with oxygen and sodium.

                Na           :           Na₂O

                  4            :              2

                  0.15       :          2/4×0.15 = 0.075 mol

                O₂           :           Na₂O

                  1            :              2

                  0.30       :          2/1×0.30 = 0.6 mol

Less number of moles of Na₂O are produced by sodium thus it will limit the yield of  Na₂O and act as limiting reactant while oxygen is in excess.

3 0
3 years ago
What should be done in order to decrease the gravitational force between two objects?
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Explanation:

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