How many neutrons does element X have if its atomic number is 44 and its mass number is 151?

In the reaction 2H2 + O2 → __H2O, what coefficient should be placed in front of H2O to balance the reaction? A-1 B-2 C-3 D - no coefficient is needed

How much heat do you need to raise the temperature of 150 g of ice from - 30°C to - 15°c?

Explain how exotic frog trafficking might put people at risk?

A device that does work in a circuit is called what?

Which of the following is true for balancing equations? The number of products should be equal to the number of reactants. The properties of products should be the same as the properties of reactants.

Which microscope came out first

Which exerts greater pressure on the floor-standing flat-footed or standing on tiptoe? on tiptoe, because the force acts over less area on tiptoe, because the force acts over more area flat-footed, because the force acts over more area flat-footed,

1. Sara tells Michael she is 160 centimeters tall, while Michael says he is 60 inches tall. If there are 2.54 centimeters in an inch, who is taller

How do you tell if a compound is polar or non polar

What two ions are central to the arrhenius definitions of acids and bases?