Answer:
Q = 6688 J
Explanation:
Given data:
Energy absorbed = ?
Mass of water = 80 g
Initial temperature = 40°C
Final temperature = 60°C
Solution:
Formula:
Q = m.c. ΔT
Q = amount of heat absorbed or released
m = mass of given substance
c = specific heat capacity of substance
ΔT = change in temperature
specific heat capacity of water 4.18 j/g.°C
ΔT = 60°C - 40°C
ΔT = 20°C
Q = 80 g ×4.18 j/g.°C × 20°C
Q = 6688 J
Answer:
25
Explanation:
With Protons being the only charged particles in the nucleus, their overall charge is zero. This is because electrons and protons have opposite charges. The nuclear charge of ANY atom is given by its atomic number.
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Answer:an article or substance that is manufactured or refined for sale.
"food products"
2.
a thing or person that is the result of an action or process.
"her perpetual suntan was the product of a solarium"
Explanation:
It is given that the price of the carpet is $ 28.99 per square yard
Step 1: Convert square yard to square meter
1 square yard = 0.836 square meter
Step 2: Calculate the cost/square meter
Now based on the relation in step (1) we can write
0.836 square meter of carpet costs $ 28.99
Therefore the cost of 1 square meter of the carpet would be
= $ 28.99 * 1 sq meter/0.836 sq meter
= $ 34.68
In this problem, we need to use the ideal gas law. The following is the formula used in ideal gas law: PV = nRT, where n refers to the moles and R is the gas constant.
Given
P = 10130.0 kPa
V = 50 L
T = 300 degree celcius + 273.15 = 573.15 K
R = 8.314 L. kPa/K.mol
Solution
To get the moles which represent the "n" in the formula, we need to rearrange the equation.
PV = nRT PV
---- ------ ---> n = --------
RT RT RT
10130.0 kPa x 50 L
n= ---------------------------------------------
8.314 L. kPa/K.mol x 573.15 K
506,500
= ----------------------------
4,765.17 mol K
=106.29 mol Ar
So the moles of argon gas is 106.29 moles
