Answer:
It is A
Explanation:
If you think about it, no-polar covalent bonds are in a symmetrical line, and polar bonds are on the diagonals of the center atom.
I hope I helped :)
B. static friction occurs.
Explanation:
When a body is pushed and it does not move, static friction has occurred.
Static friction is a type of friction that keeps a body at rest. It must be overcome before a body at rest can start moving.
- An object in motion experiences a sliding friction.
- Friction is generally defined as the resistance to motion of a body.
- In fluids, it is generally experienced as the viscosity.
- Static friction is the strongest of all the friction.
Learn more:
Friction brainly.com/question/7174363
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Answer:
1.2 L
Explanation:
Step 1: Write the balanced equation
Mg + 2 HCl ⇒ MgCl₂ + H₂
Step 2: Calculate the moles corresponding to 2.3 g of Mg
The molar mass of Mg is 24.31 g/mol.
2.3 g × 1 mol/24.31 g = 0.095 mol
Step 3: Calculate the moles of H₂ produced
0.095 mol Mg × 1 mol H₂/1 mol Mg = 0.095 mol H₂
Step 4: Calculate the volume occupied by the hydrogen
We will use the ideal gas equation.
P × V = n × R × T
V = n × R × T/P
V = 0.095 mol × (0.0821 atm.L/mol.K) × 298 K/2 atm = 1.2 L
Answer is: <span>the new pressure on the gas is 0.25 atm or 25.33 kPa.
</span>Boyle's Law: the
pressure volume law - <span>volume of a
given amount of gas held varies inversely with the applied pressure when
the temperature and mass are constant.
p</span>₁V₁ = p₂V₂.<span>
1 atm · 5.00 L = p</span>₂<span> · 20.0 L</span>.<span>
p</span>₂ = 1 atm · 5 L ÷ 20.0 L.<span>
</span>p₂ =
0.25 atm, but same amount of helium.