According to the law of conservation of matter, how must a chemical equation be written? Question 6 options:

The subscript of every element must be the same on each side of the equation.

An equal number of compounds must appear on each side of the equation.

The same coefficient must be applied to every molecule in the equation.

An equal number of atoms must be on both sides of the equation.

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

All of the following are homogeneous mixtures except a) sugar dissolved in water. b) orange juice. c) coffee with cream. d) household vinegar. e) apple juice