The answer is D glad to help :)<span />
Mass = that which causes and object to have inertia
Newton’s First Law= a special case of Galileo’s Law of Inertia
Impulse= force multiplied by time
Momentum= velocity multiplied by mass
Velocity= momentum/mass
Newton’s Second Law= the acceleration of a mass directly proportional to the force acting on it
Answer:
76.1%
Explanation:
The reaction that takes place is:
- BaCl₂ + K₂SO₄ → BaSO₄ + 2KCl
First we determine how many moles of each reactant were added:
- BaCl₂ ⇒ 80 mL * 0.812 M = 64.96 mmol BaCl₂
- K₂SO₄ ⇒ 40 mL * 1.52 M = 60.8 mmol K₂SO₄
Thus K₂SO₄ is the limiting reactant.
Using the <em>moles of the limiting reactant</em> we <u>calculate how many moles of BaSO₄ would have been produced if the % yield was 100%</u>:
- 60.8 mmol K₂SO₄ *
= 60.8 mmol BaSO₄
Then we <u>convert that theoretical amount into grams</u>, using the <em>molar mass of BaSO₄</em>:
- 60.8 mmol BaSO₄ * 233.38 mg/mmol = 14189.504 mg BaSO₄
- 14189.504 mg BaSO₄ / 1000 = 14.2 g BaSO₄
Finally we calculate the % yield:
- % yield = 10.8 g / 14.2 g * 100 %
Answer:
Molarity of Na₂CO₃ = 0.25M
% mass = 2.69
Explanation:
Molarity means mole of solute in 1L of solution
Molar mass of solute (Na₂CO₃) = 105,98 g/m
Moles = mass / molar mass → 6.73 g / 105.98 g/m = 0.0635 m
Mol/L = [M]
0.0635 mol/0.250L = 0.25M
Density of solution = Solution mass / Solution volume
1 g/ml = Solution mass / 250 mL → Solution mass is 250g
% mass will be:
In 250 g of solution we have 6.73 g of solute
in 100 g of solution we have (100 . 6.73)/250 = 2.69
<h3>
Answer:</h3>
B. 2010.62 ft³
<h3>
Explanation:</h3>
<u>We are given</u>;
Dimensions of the cylinder as 10 ft × 16 ft
We are going to take;
- Height as 10 ft
- Diameter as 16 ft
We are required to calculate the volume of the cylinder
- Volume refers to the amount of space occupied by an object.
- It is calculated depending on the shape of the solid.
In this case;
Volume of a cylinder = πr²h, where r is the radius and h is the height.
Radius, r = 8 ft
Height, h = 10 ft
Therefore;
Taking π as 3.142
Volume of the cylinder = 3.142 × (8ft)² × 10 ft
= 2010.62 ft³
Thus, the volume of the cylinder is 2010.62 ft³
