Answer:
Final temperature = 
Explanation:
Given that,
Heat added, Q = 250 J
Mass, m = 30 g
Initial temperature, T₁ = 22°C
The Specific heat of Cu= 0.387 J/g °C
We know that, heat added due to the change in temperature is given by :

Put all the values,

So, the final temperature is equal to
.
adhesion refers to the tendency of unlike molecules to bond with one another
The mass of 1.20x10^25 atoms of Ca is 8000 grams
Answer:
Explanation:
follow the rule of "a weak acid can't make a stronger acid and weak base can't make a stronger base(it's pretty accurate for acid/salt reactions/replacemnts)" the last reactions won't work, but the second to last one will be kbr+pb(no3)2-> kno3 + PbBr2 (this is unballanced.) the first reaction will work. the second one i'm not too sure tbh, but i think it won't work since barium hydroxide's a weak base and if it were to react it would make koh, a super strong base
Answer:1.4 moles of calcium chloride are required.
Explanation:
Molarity of the calcium chloride solution = 0.700 M = 0.700 mol/L
Volume of the solution = 2 L
Moles of the calcium chloride = x


x = 1.4 moles of calcium chloride
1.4 moles of calcium chloride are required.