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tk
Questions and answers by visitors named
tk
Questions (8)
what is the difference between elements in a group and elements in a period on the periodic table
Elements in the same group have
1 answer
703 views
my mind is going blank here..can someone chime in and help:
If a new breakthrough in manufacturing technology reduces the cost of
1 answer
1,053 views
if two dice are rolled 360 times, approximately how many times should you expect a sum of 7
4 answers
1,555 views
elaine and Daniel are building a rectangular greenhouse.they want the are of the floor to be 36metres squared.since the glass
2 answers
585 views
a cylindrical soup can has a volume of 335cm^3.find the dimensions(radius r and height h)that minimise the surface area of such
2 answers
627 views
1 The principle of conservation of heat energy states that
that when an object is at constant temperature or is in thermal
4 answers
1,502 views
is sandstone harder than jade?
1 answer
379 views
Bilal measured the outside height of the pea soup can to be 11.8 cm. Why did he estimate a smaller number for the inside height?
2 answers
68 views
Answers (2)
0,0.5
What is the oxidation numbers for ammonia 2NH3