4. Why can't the subscripts be changed in a chemical equation in chemistry

What is the percent by mass of nahco3 in a solution containing 10 g of nahco3 dissolved in 400 ml of h2o?

Arsenic-80 alpha decay

What is the advantage in using a simple machine? Reduces the amount of work needed to move an object. Increase the mechanical advantage by increasing the effort force that is applied. Reduce the amount of energy required.

The pH of a solution is 10. What is its OH - concentration

What describes chemical reactions that take place at different rates

What are some ways population size is limited within an ecosystem?

Which occurs when a warm fluid cools down? Energy is released to the environment. Energy is absorbed from the environment. The density of the fluid decreases. The mass of the fluid decreases.

If 3 g of element C combine with 8 g of element D to form compound CD, how many grams of D are needed to form compound CD2?

An easy way to assign the number of d-electrons (the “d count”) in a transition metal ion is to first look at the periodic table and take note of which group the element is in.

A basketball weigh more after it was inflated with air then when it was deflated how does this show that gas is matter