Answer:
Explanation:
1. Gather the information
We will need a chemical equation with masses and molar masses, so, let's gather all the information in one place.
Mᵣ: 16.04 32.00 44.01
CH₄ + 2O₂ ⟶ CO₂ + 2H₂O
m/g: 60
1. Moles of CO₂
2. Mass of CH₄
(a) Moles of CH₄
(b) Mass of CH₄
3. Mass of O₂ required
(a) Moles of O₂
(b) Mass of O₂
Answer:
A fan is a common house appliance which is attached to the ceiling and uses an electric motor to rotate blades or paddles in a circular motion. Ceiling fans help cool a room by moving air which causes evaporative cooling. Fans range in size from 36 inches to 56 inches using 55 to 100 watts, a typical 48 inch ceiling fan will use 75 watts.
where you have
Hours Used Per Day:5
Power Use (Watts): 75
Price (kWh): 0.01
then you have
Cost Per Hour=0.0075
Cost Per Day= 0.0375
Cost Per Month=1.14
Cost Per Year=13.69
kWh Per Day: 0.38
Atoms that lose electrons acquire a positive charge as a result because they are left with fewer negatively charged electrons to balance the positive charges of the protons in the nucleus. Positively charged ions are called cations. Most metals become cations when they make ionic compounds.
Answer:
Explanation:
Hello,
In this case, given the rate constant, we infer this is about a second order reaction, whose equation is:
Thus, by integration we obtain:
Hence, we solve for the final concentration after 0.385 s:
Best regards.
The pressure exerted by 0.57 moles of CO2 at a temperature of 25°C and a volume of 500 ml is 28 atm.
<u>Explanation:</u>
According to ideal gas law,
PV = nRT
where P represents the pressure of a gas,
V represents the volume of a gas,
n represents the number of moles,
R represents the gas constant = 0.0821 L atm / mol K.
T represents the temperature of a gas.
Given V = 500 ml = 0.5 l, T = 25°C = 298 K, n = 0.57 mol
PV = nRT
P = nRT / V
= (0.57 0.0821 298) / 0.5
P = 28 atm.
The pressure of a gas is 28 atm.