<h3>
Answer:</h3>
CaCO₃(s) → CaO(s)+CO₂(g)
<h3>
Explanation:</h3>
We are required to balance the equation given;
We need to ask ourselves some questions;
What is a balanced equation?
- A balanced equation is an equation that has equal number of atom of each element on both sides of the equation.
How do we balance chemical equations?
- Chemical equations are balanced by putting appropriate coefficients on the reactants and products in the equation.
Why is it important to balance chemical equations?
- Chemical equations are balanced to ensure they obey the law of conservation of mass.
- According to the law of conservation of mass, the mass of the reactants should be equal to the mass of the products.
In this case;
The equation given is;
CaCO₃(s) → CaO(s)+CO₂(g)
- The equation is balanced since the number of atoms of each element is equal on both sides of the equation.
- That is, 1 calcium atom, 1 carbon atom and 3 oxygen atom on both sides of the equation.
Answer:
Rabbit
Explanation:
I said rabbit because the snake feeds off the rabbit and that's where he gets his energy from. If the question asked you what is the primary source of energy in this food chain then the answer would be the sun. Since the question only asks you about the snake then the rabbit is the answer.
Hope this helps!
Answer:
Q = m c T
c= 0.140 j/(g x °c)
m= 250.0g
T =52
hope you can solve it now
Explanation:
Answer:
0 587 mL
Explanation:
First we convert 180 grams of HCl into moles, using its molar mass:
- 180 g ÷ 36.46 g/mol = 4.94 mol HCl
Now we can <u>use the number of moles and the given concentration to calculate the required volume</u>, applying the <em>definition of molarity</em>:
- Molarity = moles / liters
- Liters = Moles / molarity
- 4.94 mol / 8.40 M = 0.588 L
Finally we <u>convert liters into milliliters</u>:
The closest answer is option C, 587 mL.
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