What mass of the original (25.00% by mass) solution contains 0.500 mol NaOH?

When an atom becomes an ion does its mass number change?

Which choice is characterized by being malleable? A. metaloids B. metals C. noble gases D. nonmetals

How are today's field galaxies different than distant ones?

How does a change in mass affect the motion of an object

What factors does the climate include? Question 2 options: amount of precipitation, average temperature temperature and warmth amount of rainfall, amount of habitat destruction the weather forecast during the week

A main goal of most environmental scientists is to achieve? A - biodiversity B - cost-benefit balance C - sustainability D - supply and demand

Theo is skiing with his friends when he sees an avalanche warning sign. What type of hazard is this? A. Biological B. Chemical C. Social D. Physical

A red blood cell contains 4.0 107 free electrons. what is the total charge of these electrons in the red blood cell?

The coefficients in a chemical equation? A; show the valence electrons for each atom B; are the molar masses of the substances C; show the number of grams of each substance that react D; indicate the number of moles of each substance that react

In a hypothetical garden each of the identical trees consist of 11 branches and each on a tree consist of 35 leaves. How many trees would have 8,085 leaves?