Answer:
v = 534.5mL
m = 597.15g
Density = 9.23g/mL
Density = 9.125g/mL
Explanation:
Density = mass/ volume
For the first question
Density = 1.59g/mL
Mass = 834.01g
Volume = ?
Using the above formula we have 1.59 = 834.01/v
v = 834.01/1.59
v = 534.5mL
For the second question
Density =0.9167g/mL
Volume = 651.41mL
Mass =?
Using the above formula we have
0.9167 =m/651.41
Cross multiply
m = 0.9167 x 651.41
m = 597.15g
For the third question
Mass =803.44g
Volume=87.03mL
Density =?
Density = 803.44/87.03
= 9.23g/mL
For the fourth
Density = 56.85/6.23
= 9.125g/mL
Answer: 0.4 moles
Explanation:
Given that:
Amount of moles of HCI = Z (let unknown value be Z)
Volume of HCl = 500.0 mL
Convert 500.0 mL to liters
If 1000ml = 1L
500.0 mL = (500.0 mL/1000mL) = 0.5L
Molarity of HCl solution = 0.200M
Recall that molarity of a solution is obtained by dividing the amount of moles by volume in liters
i.e Molarity = Amount in moles/volume
0.200M = Z x 0.5L
Z = 0.200M / 0.5L
Z = 0.4 moles
Thus, 0.4 moles of HCl is needed to make the solution
The correct answer is mountains
~ hope this helps! ❤️
K= [Ar] 4s^1
Pb= [Xe] 6s^2 5d^10 6p^2
Sc= [Ar] 4s^2 3d^1
Ra= [Rn] 7s^2
O= [He] 2s^2 2p^4
Ag= [Kr] 5s^2 4d^9
Ru= [Kr] 5s^1
Ce= [Xe] 6s^2 5d^1 4f^1
I= [Kr] 5s^2 4d^10 5p^5
F= [He] 2s^2 2p^5
Answer:
2
Explanation:
Equation of reaction
BaSO₄ + H₂SO₄ → Ba(HSO₄)₂
From the above equation of reaction, it is evident that there are 2 atoms in the product side of the reaction which is only logical because every chemical reaction obey the law of conservation of mass which states that matter can neither be created nor destroyed but can changed from one form to another.
In the reactant side, we have 2 atoms of S from the two reactants coming together.
One sulfur atom from BaSO₄ and the other from H₂SO₄. So therefore, only 2 sulfur can be produced since the reaction has to observe law of conservation of matter
