Answer:
a) ∆T=T1-T2
b) At the particle level the temperature changes are the result of the added energy causing the particles of water to move more vigorously. Either the particles of solid vibrate more vigorously about their fixed positions or the particles of liquid and gas move about their container more rapidly.
c) The state in which two substances in physical contact do not share any heat energy. The temperature of two substances in thermal equilibrium is said to be the same. Also see thermodynamics.
Explanation:
hope that helped good luck!
I think its B because if u increase the mass itll have more force which will increase the momentum
The answer is sodium chloride.
Explanation:
Sodium chloride refers to table salt, and is the most abundant of salts found in seawater.
Answer:
92.75%
Explanation:
The overall chemical equation for the reaction in the preparation of alum from the aluminium can be expressed as:
From above; we will see that 2 moles of Aluminium react with sulphuric acid and water to produce 2 moles o aluminium alum.
Therefore, the theoretical yield can be determined as:
= 4.789g of 
To find the percent yield, we need to divide the actual yield by the theoretical yield and then multiply it with 100.
∴
percent yield = ( mass of alum(g)/theoretical yield(g) ) × 100
percent yield = ( 4.789g / 5.1629g ) × 100%
percent yield = 0.9275 × 100%
percent yield = 92.75%
Thus, the percent yield of the experiment 92.75%
P = 1.75 atm = __ kPa =
_mmHg
1 atm = 760 mm Hg
We can write the two conversion factors
1 atm / 760 mm Hg or 760 mm Hg / 1 atm
1.75 atm x ( 760 mm Hg \ 1 atm)
1330 mm Hg
1 atm = 101325 pa
We can write two conversion factors
1 atm / 101325 pa or 101325 pa / 1 atm
1.75 atm x ( 101325 pa / 1 atm )
177319 pa or 177.319 kPa
