Answer:
V₂ = 568.9 mL
Explanation:
Given data:
Volume of gas = 550 mL
Pressure of a gas = 960 mmHg
Temperature = 200.0°C ( 200+273 = 473 K)
Final volume = ?
Final pressure = 830 mmHg
Final temperature = 150°C (150+273 = 423 K)
Solution:
Formula:
P₁V₁/T₁ = P₂V₂/T₂
P₁ = Initial pressure
V₁ = Initial volume
T₁ = Initial temperature
P₂ = Final pressure
V₂ = Final volume
T₂ = Final temperature
Solution:
V₂ = P₁V₁ T₂/ T₁ P₂
V₂ = 960 mmHg × 550 mL × 423 K / 473 K ×830 mmHg
V₂ = 223344000 mL / 392590
V₂ = 568.9 mL
Answer:
D
its wings deflect air downward, and the air pushes the plane upward.
Explanation:
According to Newtons third law of motion for every action there is an equal and opposite reaction.
the wings in the plane are designed in such way that the air flowing on the wing is deflected downwards as a result there is a lift produced on the plane due to Newtons third law of motion.
The answers are:
1. B. Protons
2. B. Nuclide
3. D. Even
4. B.<span>Isotopes are two or more atoms with the same atomic number, but a different mass number.
Isotopes are basically identical elements with different numbers of neutrons. Ideally, the number of protons and neutrons should be the same, but there are instances where neutrons are greater, making the isotopes more unstable. The force that holds together the nucleus of atoms is know as the strong force, and it overcomes the repulsive forces between protons. </span>
Answer:
0.092M
Explanation:
Molarity of glucose solution = number of moles ÷ volume
According to this question, 12.5g of glucose (C6H12O6) is dissolved in enough water to make 750mL of solution.
Molar mass of glucose (C6H12O6) = 12(6) + 1(12) + 16(6)
= 72 + 12 + 96
= 180g/mol
mole = mass/molar mass
mole = 12.5/180
mole = 0.069mol
Volume of solution = 750mL = 750/1000 = 0.750L
Hence, molarity = n/V
Molarity = 0.069 ÷ 0.750
Molarity = 0.092M
