Answer:
Now, the problem provides you with the density of bismuth metal, which is said to be equal to 9.8 g cm−3 . This tells you that for every cubic centimeter of bismuth, you get a mass of 9.8 g .
Answer:
picture of the question please
12 because 1 is the lowest 12 is the highest
There is no atmosphere containing gases like carbon dioxide and oxygen which is important for plants and animals to survive respectively.
The molarity of Sr(OH)2 solution is = 0.1159 M
calculation
write the equation for reaction
that is, Sr(OH)2 +2HCl→ SrCl2 + 2 H2O
then finds the mole of HCl used
moles = molarity x volume
=40.03 x0.1159 = 4.639 moles
by use of mole ratio between Sr(OH)2 to HCL which is 1 :2 the moles of Sr(OH)2 is therefore = 4.639 x1/2 = 2.312 moles
molarity of Sr(OH)2 is = moles / volume
=2.312 /20 =0.1159 M