Answer:
The correct answer is rough, white tents
Explanation:
The options that have black tents are wrong because black materials absorbs heat, hence cannot protect the family from the heat from the sun during the reunion.
Also light/heat energy easily penetrate smooth surfaces as against rough surfaces. From this explanation, rough, white tents are better for the reunion as they will protect the family from the heat radiated from the sun.
The answers for the following questions is answered below.
- Therefore the volume of a gas is 22.4 L
- <u>Therefore the number of moles of oxygen are 2.37 moles</u>
Explanation:
1. Given:
no of molecules (n) = 6.023 × 
volume of gas at STP conditions (V) =22.4 liters
To solve:
Volume of gas (v)
We know;
1 × 22.4 = v
v =22.4 L
Therefore the volume of a gas is 22.4 L
2. Given:
volume of oxygen gas (v) = 53 L
Volume of gas at STP conditions (V) =22.4 L
To solve:
no of moles of oxygen gas
We know;
n =
n =2.37 moles
<u>Therefore the number of moles of oxygen are 2.37 moles</u>
<u></u>
Answer:
P = 58.52 atm
Explanation:
Given data:
Mass of sample = 32.0 g
Pressure of sample = ?
Volume of gas = 850 cm³
Temperature of gas = 30°C
Solution:
Number of moles of gas:
Number of moles = mass/molar mass
Number of moles = 32.0 g/ 16 g/mol
Number of moles = 2 mol
Pressure of gas:
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
Now we will convert the temperature.
30+273 = 303 K
850 cm³ × 1L /1000 cm³ = 0.85 L
by putting values,
P× 0.85 L = 2 mol × 0.0821 atm.L/ mol.K × 303 K
P = 49.75 atm.L/ 0.85 L
P = 58.52 atm
Answer:
Here you go.
Explanation:
The activation energy of a chemical reaction is closely related to its rate. Specifically, the higher the activation
