Answer:
Explanation:
Inclined Plane: Easy Lifting. An inclined plane is simply an even, sloping surface. ...
Wedge: Splitting and Separating. ...
Screw: Fastening and Moving. ...
Lever: Multiplying Force. ...
Wheel and Axle: Rolling. ...
Pulley: Hoisting Heavy Loads. ...
Scissors: Making the Cut. ...
Hand Truck: Mover's Friend.
Answer:
is the equation of state of a hypothetical ideal gas
Explanation:
its formula is PV=nRT
Di- is used when you are naming organic compounds. If you have the same substituent repeated twice in the compund
For example: CH3-CH(CH3)-CH2-CH(CH3)-CH3
This will be named 2,4-dimethylpentane
Answer:
He was the first scientist to observe and describe bacteria and protozoa by looking at a drop of water from a pound under a microscope. He also was the one to build the first compound microscope.
Hope this helps :)
Answer:
Empirical formula is Cr₂O₃.
Explanation:
Given data:
Percentage of Cr = 68.4%
Percentage of O = 31.6%
Empirical formula = ?
Solution:
Number of gram atoms of Cr = 68.4 / 52 = 1.3
2
Number of gram atoms of O = 31.6 / 16 = 1.98
Atomic ratio:
Cr : O
1.32/1.32 : 1.98/1.32
1 : 1.5
Cr : O = 1 : 1.5
Cr : O = 2(1 : 1.5)
Empirical formula is Cr₂O₃.
