The mass of the piece of wood is 35.58 g.
Joule = M × T × C
Where, M = mass
T = change in temperature(42C-23C=19 C)
C = specific heat capacity = 1.716 joules/gram
Substituting the values in the equation,
1160 = M × 19 × 1.716
M = 1160/32.604 = 35.58 g
Therefore, the mass of the piece of wood = 35.58 g
<h3>What is meant by specific heat capacity?</h3>
A material's specific heat capacity, which is defined as its heat capacity divided by its mass, determines how much energy is required to increase a gram's temperature by one degree Celsius (or one Kelvin)
<h3>What is mass?</h3>
Mass is the quantity of matter in a physical body.
To learn more about specific heat capacity visit:
brainly.com/question/1747943
#SPJ4
Answer:
Maximum gravitational Force: 
Explanation:
The maximum gravitational force is achieved when the center of gravity are the closer they can be. For the spheres the center of gravity is at the center of it, so the closer this two centers of gravity can be is:
bowling ball radius + billiard ball radius = 0,128 m
The general equation for the magnitude of gravitational force is:
Solving for:
The result is:
Answer:
7.874 g/cm³ is the density
Answer:
9.80g of O2.
Explanation:
Step 1:
The balanced equation for the reaction. This is given below:
2KClO3 —> 2KCl + 3O2
Step 2:
Determination of the mass of KClO3 that decomposed and the mass of O2 produced from the balanced equation. This is illustrated below:
Molar Mass of KClO3 = 39 + 35.5 + (16x3) = 122.5g/mol
Mass of KClO3 from the balanced equation = 2 x 122.5 = 245g
Molar Mass of O2 = 16x2 = 32g/mol
Mass of O2 from the balanced equation = 3 x 32 = 96g.
From the balanced equation above, 245g of KClO3 decomposed to produce 96g of O2.
Step 3:
Determination of the mass of O2 produced in the decomposition of 25.0g of KClO3. This is illustrated below:
From the balanced equation above, 245g of KClO3 decomposed to produce 96g of O2.
Therefore, 25g of KClO3 will decompose to produce = (25x96)/245 =
9.80g of O2.
Therefore, 9.80g of O2 is produced from the decomposition of 25g of KClO3.
