Answer: Aufbau principle
Explanation: Aufbau principle explains that electrons are fed into orbitals starting at the lowest energy level before filling higher energy levels.
Answer:
1.31moles
Explanation:
Given parameters:
Mass of CuO₂ = 125g
Unknown:
Number of moles = ?
Solution:
To solve this problem, we use the expression below:
Number of moles =
Molar mass of CuO₂ = 63.6 + 2(16) = 95.6g/mol
So;
Number of moles = = 1.31moles
Answer:
5 pumpkin pies could be made with 7.5 cups of sugar.
Explanation:
The conversion factor to solve the problem is:
Answer:
If some would ask me to determine the purity of an unknown powder that contains illegal drugs like cocaine, they would probably be wanting to remove other substances that are added like baking soda, and the reason this is so important is that sometimes the ingredients they get to mix with have an effect on the test and may miss lid the results.
Explanation:
Answer:
summer solstice
Explanation:
on june solstice the northen hemisphere leans more toward the sun giving us longer days and more strong sunlight and It's the opposite in the Southern Hemisphere where june marks the start of winter thus its the shortest day of the year
H = mCpT
H = (500 grams water)( 4.18 J/ g - degrees C) (65 - 50)
H =31,350 J
since 1 cal = 4184 joules
31,350 Joules (1 calorie/ 4184 joules) = 7.49 calories