Answer:
The volume of water to be added is 0.175 liters of water
Explanation:
The given concentration of the nitric acid = 55% (M/M)
The mass of the nitric acid solution = 100 gm
The concentration solution is to diluted to = 20% (M/M)
The 100 g 55%(M/M) nitric acid solution gives 55g nitric acid in 100 g of solution
Therefore, to have 20% (M/M) nitric acid solution with the 55 g nitric acid, we get
Let "x" represent the volume of the resulting solution, we have;
20% of x = 55 g of nitric acid
∴ 20/100 × x = 55 g
x = 55 g × 100/20 = 275 g
The mass of extra water to be added = The mass of the 20%(M/M) solution solution of nitric acid - The current mass of the 55%(M/M) solution of nitric acid
The mass of extra water to be added = 275 g - 100 g = 175 g
Volume = Mass/Density
The density of water ≈ 1 g/ml
∴ The volume of water to be added that gives 175 g of water = 175 g/(1 g/ml) = 175 ml. = 0.175 l
The volume of water to be added = 0.175 liters of water.
Answer:
When you mix the sugar into the tea and stir, it dissolves so you can't see it. Also when you stir the sugar into the tea the taste changes and it turns sweeter.
Answer:
the maximum safe operating temperature the engineer should recommend for this reaction is 616 °C
Explanation:
Given the data in the question;
First we calculate the Volume of the steel cylinder;
V = πr²h
radius r = Diameter / 2 = 27 cm / 2 = 13.5 cm
height h = 32.4 cm
so we substitute
V = π × ( 13.5 cm )² × 32.4 cm
V = π × 182.25 cm × 32.4 cm
V = 18550.79 cm³
V = 18.551 L
given that; maximum safe pressure P = 3.10 MPa = 30.5946 atm
vessel contains 0.218kg or 218 gram of carbon monoxide gas
molar mass of carbon monoxide gas is 28.010 g/mol
so
moles of carbon monoxide gas n = 218 gram / 28.010 g/mol = 7.7829 mol
we know that;
PV = nRT
solve for T
T = PV / nR
we know that gas constant R = 0.0820574 L•atm•mol⁻¹ K⁻¹
so we substitute
T = ( 30.5946 × 18.551 ) / ( 7.7829 × 0.082 )
T = 567.5604 / 0.6381978
T = 889.317387 K
T = ( 889.317387 - 273.15 ) °C
T = 616.167 ≈ 616 °C { 3 significant digits }
Therefore, the maximum safe operating temperature the engineer should recommend for this reaction is 616 °C
Answer: Atoms are single neutral particles, and an ion is a positively or negatively charged particle.
Explanation:
Answer:
10.945 x 10^-4
Explanation:
Balanced equation:
Mn(OH)2 + 2 HCl --> MnCl2 + H2O
it takes 2 moles HCL for each mole Mn(OH)2
Next find the molarity of the Mn(OH)2 solution
= (1 mole Mn(OH)2 / 2 mole HCl) X (0.0020 mole HCl / 1000ml) X (4.86 ml)
= 4.86 x 10^-3 mole
this is now dissolved in (70 + 4.86) = 74.86 ml or 0.07486 L
thus [Mn(OH)2] = 4.86 x 10^-3 mole / 0.07486 L = 0.064921 M
Ksp = [Mn2+][OH-]^2 = 4x^3 = 4(0.064921)^3 = 10.945 x 10^-4
