Answer:
You see, plants need energy to grow and grow and grow. They use energy from sunlight to make a simple sugar, glucose. Whenever the plant needs energy, it can chomp a little glucose off of the starch.
without energy it wont get energy/food so it will eventually die
Explanation:
D slightly acidic
milk is slightly acidic or close to neutral pH
Answer : The pressure of 
is 0.975 atm.
Solution : Given,
Mole fraction of = 0.25
Mole fraction of 
= 0.65
Mole fraction of 
= 0.10
Total pressure of mixture = 3.9 atm
According to the Dalton's law of partial pressure, which tells that the partial pressure of a gas is directly proportional to the mole fraction of a gas.
where,
= partial pressure of a gas
= mole fraction of a gas
= total pressure of gas
Now we have to calculate the partial pressure of gas.
Put all the given values in above formula, we get
The partial pressure of is 0.975 atm.
Answer:
Ionic
Explanation:
Calcium is present in group two. It has two valance electrons. It loses its two electrons to get complete octet.
Fluorine is present in group seventeen. It has seven valance electrons. It needed just one electrons to complete the octet. That's why two fluorine atoms are bonded with one calcium atom.
When both react with each other ionic compound is formed between them because of large electronegativity difference. The electronegativity of fluorine is 3.98 and for calcium is 1. There is large difference is present. That's why electrons from calcium is transfer to the fluorine. Calcium becomes positive and fluorine becomes negative ion. Both atoms are bonded together electrostatic attraction occur between anion and cations.
Ca + F₂ → CaF₂
Answer:
13.9atm
Explanation:
Use Boyle's Law: P1V1 = P2V2
Manipulate the equation: P2 = P1V1/V2
Substitute the values: P2 = (1.31atm)(5.51L)/0.520L
P2 = 13.88096atm
Optionally round to 3 sig figs to get 13.9atm
