Answer:
0.00420
Explanation:
The equation is Q=mc(T(final)-T(initial), where c is the specific heat, Q is heat supplied, m is mass, T(final) is final temperature and T(initial) is initial temperature (you'll see this written as delta T, which means change in temperature).
2520 = Q
m = 10.0kg; answer choices are in g, not kg, so multiply by 1000 to get m in g; m = 10000 g
Plug in the values you have and solve for c.
2520=(10000)(c)(70-10)
2520=600000c
c=0.0042 j/(gc)
Answer:aluminum
Explanation:aluminum is a precious metal which means that it can be changed into a liquid solid or gas
Explanation:
B. 1) Tritium is the isotope of <u>Hydrogen</u><u> </u><u>(</u><u>H)</u><u>.</u>
2) Mass of an Electron is <u>9.10938356 × 10-³¹ </u> Kg.
3) Molecular mass of Carbon dioxide (CO2)
=><u> Molecular mass of carbon = 12g</u>
<u>Molecular mass of oxygen= 16g</u>
<u>molecular mass of CO2 = [12 + (16 X 2)]g</u>
= <u>(12 + 32)g</u>
= <u>44 g</u>
4) Dalton has given its Atomic Theory in the year <u>1803.</u>
5) Nucleus is discovered by
= <u>Ernest Rutherford discovered the nucleus of the atom in 1911.</u>
<em><u>hope</u></em><em><u> this</u></em><em><u> helps</u></em><em><u> you</u></em><em><u>.</u></em>
Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g)
(since the molar mass of Mg is not given, assuming that it's mola mass is 24gmol¯1)
1st find the moles of Mg using the equation n=m/M where
n - moles
m - mass
M - molar mass
Therefore :
n = 0.39375mol
n = 0.39mol
Then using the equation n=V/Vm where;
n = mol
V = volume
Vm = molar volume
Find the volume.
n = V/Vm
(n =0.39mol , Vm = 22.4dm³mol¯¹)
V = 0.39mol×22.4dm³mol¯¹
V = 8.736dm³
