Elena makes the table below to determine the number of atoms of each element in the chemical formula 3(nh), so
total atoms
element
nitrogen
hydrogen
sulfur
oxygen
calculation
1 x 2 x 3
4x2x3
1 x 4 x3
- 4x3
24
12
12
vhat mistake did elena make?
she should not have multiplied the sulfur atoms by the subscript 4
she should not have multiplied the nitrogen atoms by the subscript 2
she should not have multiplied the oxygen atoms by the coefficient 3
she should not have multiplied the hydrogen atoms by the coefficient 3.

Suppose that two tanks, 1 and 2, each with a large opening at the top, contain different liquids. a small hole is made in the side of each tank at the same depth 1.57 m below the liquid surface, but the hole in tank 2 has 2.49 times the cross-sectional area of the hole in tank 1. (a) what is the ratio ρ1/ρ2 of the densities of the liquids if the mass flow rate is the same for the two holes? (b) what is the ratio rv1/rv2 of the volume flow rates from the two tanks? (c) at one instant, the liquid in tank 1 is 14.9 cm above the hole. if the tanks are to have equal volume flow rates, what height above the hole must the liquid in tank 2 be just then?

The coulomb's law explains which of the following? select all the force between two charged objects is inversely proportional to the charge on each object. the force between two charged objects is directly proportional to the charge on each object. the force between two charged objects is directly proportional to the distance separating them. the force between two charged objects is inversely proportional to the square of the distance separat coulomb's law is similar to newton's 2nd law. if the force between two objects is f and the charge on both objects is doubled, the new force between the would now be 2f. if the force between two objects is 2f and the distance separating them is doubled, the new force between the objects would now o the be zf.

The dot diagram represents the motion of the motorcycle as it moves from left to right