Answer:
the reason why Mars is red is because of its regolith, or surface material, contains lots of iron oxide — the same compound that gives blood and rust their hue
HNO3 is a strong acid while HBrO is weak acid.
Therefore we ignore the presence of the weak acid such that we consider the pH of the strong acid.
Therefore; since pH= - log (H+)
Hence pH= -log 0.18
= 0.745
Thus the pH of the mixture is 0.745
Answer:
%Ga by mass in sample of 
is 23.0%
Explanation:
Molar mass of AgBr = 187.77 g/mol
So, 0.299 g of AgBr = 
moles of AgBr = moles of Br = 0.00159 moles of Br
Br in AgBr comes from
So, there are 0.00159 moles of Br in 0.165 g of
Molar mass of Br = 79.904 g/mol
So, mass of Br in 0.165 g of = 
= 0.127 g
So, mass of Ga in sample of = (0.165-0.127) g = 0.038 g
So, %Ga by mass in sample of = [(mass of Ga)/(mass of )]
%
= 
%
= 23.0%
Answer:
C. Conduction requires objects to have direct physical contact; convection does not.
Explanation:
Conduction is used in cooking. You have to put the pot on the burner to cook the food. Otherwise, the air will cool it and the food will not cook because it's not getting the pot hot.
Convection moves heat through electromagnetic waves, kinda like the sun warming the Earth.
I hoped this helped and please tell me if you have any questions. (And you can choose if you want an explanation or not!) Have an awesome day!
