The answer is HEAT this should help u my guy
C
These are all isotopes of Hydrogen and they differ from one another because of their different number of neutrons.
To determine the quantity of pure CaCl2 from the given amount of CaCl2.9H2O, we use the ratio of CaCl2 to CaCl2.9H2O. From the formula the ratio would 1 is to 1 We calculate as follows:
7.5 g CaCl2.9H2O (1 mol / 273.1215 g) ( 1 mol CaCl2 / 1 mol CaCl2.9H2O ) ( <span>110.98 g / 1 mol ) = 3.05 g CaCl2
Hope this answers the question. Have a nice day. Feel free to ask more questions.</span>
The atomic number of helium is 2
Answer:
70%
Explanation:
105 divided by 150 equal to 0.7. then u multiply 0.7 by 100. equal 70. so its C because efficiency = (effective work)/(executed work) * 100%
hope it helped :3
