Answer:
1) The power of Niagara Falls is 1.176 × 10⁹ W
2) The number of 15 W LED light bulbs it could power is 78.4 × 10⁶ light bulbs
Explanation:
1) The Niagara falls water mass flow rate = 2,400,000 kg/s
The height of the fall = 50 meters
The gravitational potential energy = Mass (kg) × height (m) × gravity (9.8 m/s²)
The power = The energy converted per second = Mass flow rate (kg/s) × height (m) × gravity (9.8 m/s²)
Therefore;
The power of Niagara Falls= 2,400,000 kg/s × 50 m ×9.8 m/s²= 1.176 × 10⁹ W
The power of Niagara Falls = 1.176 × 10⁹ W
2) The number, n, of 15 W LED light bulbs it could power is given by the relation;
n × 15 W = 1.176 × 10⁹ W
∴ n = 1.176 × 10⁹ W/(15 W) = 78.4 × 10⁶ light bulbs
The number of 15 W LED light bulbs it could power = 78.4 × 10⁶ light bulbs.
In multicellular organisms, the body is a system of multiple interacting subsystems. These subsystems are groups of cells that work together to form tissues and organs that are specialized for particular body functions.
Hope This Helps! Have A Nice Day!
Answer:
<h3>The answer is 0.75 g/mL</h3>
Explanation:
The density of a substance can be found by using the formula
From the question we have
We have the final answer as
<h3>0.75 g/mL</h3>
Hope this helps you
<h3><u>Answer;</u></h3>
= 3.12 moles of NaNO3
<h3><u>Explanation</u>;</h3>
The equation for the reaction is;
Pb(NO3)2+Na2CrO4 → PbCrO4+2NaNO3
Molar ratios in the reaction are ; 1 : 1 : 1 : 2
Which means; One mole of (Na2CrO4) produces two moles of (NaNO3)
We can calculate the number of moles of Na2CrO4,
Moles (na2CrO4) = 253g /162
= 1.56 moles
Moles of NaNO3 will be;
= 1.56 moles x 2 = 3.12 moles
Therefore, the moles of NaNO3 that will be produced will be 3.12 moles
