Answer:
CH2Br2= a Tetrahedral shape
Explanation:
At s.t.p, the volume of a gas =22.4dm³
Talking the problem,
At 1atm, 273K the volume =7 moles *22.4dm³/mol
At 323K, 2.90atm, volume =?
The combined gas equation
P1v1/T1=P2v2/T2
P1=1atm
P2=2.9atm
T1=273K
T2=323K
V1=156.8dm³
Therefore,
1*156.8dm³/273=2.9atm*V2/323
V2=(156.8dm³*323K)/(273K*2.9atm)
= 64dm³
Answer:
The acetylene must be fill at 315 atm.
Explanation:
Given data:
Pressure of oxygen =P₁= 135 atm
Volume of oxygen = V₁=7.00 L
Volume of acetylene = V₂=3.00 L
Pressure of acetylene =P₂= ?
Solution:
According to Boyle's law
P₁V₁ = P₂V₂
P₂ = P₁V₁/V₂
P₂ = 135 atm × 7.0 L / 3.00 L
P₂ = 945 atm. L/ 3.00 L
P₂ = 315 atm
The acetylene must be fill at 315 atm.
Answer:
C. 0.35cm
Explanation:
The length indicated by the arrow along the ruler should recorded be recorded as "0.35cm".
This is correct because when counting the measurement on the ruler, the first line on the ruler is 0.1cm, the second line is 0.2cm, and so on. The spaces between each line is 0.05cm. So, the arrow is pointing on the space between 0.3cm and 0.4cm.
Therefore, 0.3cm + 0.05cm = 0.35cm.(answer).
One molecule of water contains two atoms of hydrogen and one atom of oxygen, the atomicity of water is three.
