K and Br can form an ionic bond. Since potassium is a metal (has a small electronegativity) and bromine is a nonmetal (has a large electronegativity), potassium can give an electron to bromine creating potassium bromide.
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Answer:
Mass, m = 30 kg
Explanation:
We have,
Acceleration of a cart, 
Force applied, is 60 N
It is required to find the mass of the cart.
The formula of the force acting on the cart is :
m is mass of the cart
So, the mass of the cart is 30 kg.
Answer:
Potential Energy
Explanation:
Right now, the match is giving off no energy to it's environment.
<em>Light</em><em> </em><em>it</em><em>.</em>
Now it's giving off a few kinds:
- Thermal energy (heat)
- Light energy
The match has the potential to have energy, but it currently has none.
Answer: 500g
Explanation:
We are asked to find the theoretical yield of a reaction, and we are given the following information:
In order to find the the theoretical yield we must use the following formula:
We have to convert the percents to real numbers before the calculations. We can do it dividing the percent value into 100, so:
