Answer:
d
Explanation:
it's basic chemistry. electrons are negative and travel around the outside. neutrons are neutral and in the nucleus with the proton
Answer:
macro-evolution
Explanation:
This happens when evolution occurs because of separation of a population.
Answer:
50.9° (corrected to 3 significant figures)
Explanation:
Energy(J) = mass(kg) x specific heat capacity x temperature change
(E = mcΔT)
Let the new temperature be T.
75000 = (1.2 )(4186)(T-36)
14.930 = T -36
T = 50.9°
Answer: 565.245kJ
To answer this question, you need to know how much water heat capacity which was 4.187 kJ/kg K. First, we need to find the calorie absorbed by water. Since the sample is 1kg, the initial temperature is 21 ∘C and final temperature is 34.5 <span>∘C then the calculation would be:
Energy= (Final temp - initial temp) * heat capacity * mass
Energy = (34.5-21) </span>∘C * 4.187 * kJ/kg K * 1kg= 56.5245 kJ
The energy is made from 0.1 gram, then for 1 gram of energy it should be:
1 gram/ 0.1gram x 56.5245 kJ= 565.245kJ
<u>Answer:</u> The volume of solution is 195.8 mL
<u>Explanation:</u>
To calculate the volume of solution, we use the equation used to calculate the molarity of solution:
We are given:
Molarity of solution = 0.575 M
Given mass of nickel (II) acetate = 19.9 g
Molar mass of nickel (II) acetate = 176.8 g/mol
Putting values in above equation, we get:
To prepare 0.575 molar nickel (II) acetate solution, we need to add 19.9 grams of nickel (II) acetate to 195.8 mL of solution.
Hence, the volume of solution is 195.8 mL