Chemistry 2 Counting Question Preview (ID: 46108)
Chem 2 Information.
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What element is Co
a) Cobalt
b) Copper
c) Chlorine
d) Calcium
2H
a) Hydrogen 2
b) Helium 2
c) Hydrogen 1
d) Helium 1
2H + O ------ 2HO
a) Yes it follows the law of conservation of mass
b) No it does not follow the law of conservation of mass
c) yield
d) ?
Heterogeneous mixture
a) lemonade
b) tea
c) tea with ice cubes
d) lemonade with sugar
homogeneous mixture
a) tea with ice cubes
b) lemonade
c) salad
d) crayons in a box
6CO2 + 6H2O ------ C6H12O6 + 6O2 Does this chemical equation follow the law of conservation of mass?
a) yes
b) no
c)
d)
CuO
a) cobalt and oxygen
b) chlorine and osmium
c) copper and oxygen
d) cobalt and osmium
6CO2 + 6H2O ------ CHO + 6O2 How many compounds are on the product side?
a) 0
b) 1
c) 2
d) 3
what do we do if there is no number where the subscript goes?
a) place a zero there
b) place an one there
c) pretend that it is not there
d)
elements
a) have two or more atoms connected
b) only have one type of atom
c) are not real
d)
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