Which statement gives a reason why scientist think that the universe began with an explosion

If a decrease in temperature has happened, what occurred? A.) Energy is absorbed. B.) Energy was released. C.) Energy was destroyed. D.) Energy was created.

In November, Mountain town received snow on 30% of the days in the month (*hint: 30 days in November*). On how many days did it snow it November?

Consider the following reaction 2A + 3B - > 2C If you have 4moles of A and excess amount of B, what is the maximum number of moles of C that can be made by the reaction?

A chemical reaction in which one element replaces another element in a compound can be categorized as a combustion reaction. decomposition reaction. single displacement reaction. double displacement reaction.

6) A cheetah can run at a speed up to 112 km/hr. How fast is this in m/s? If he runs for 4.5 seconds, how far will he run (in m) ? (hint: you need to solve with 2 different setups)

C₂H₂ + O2 - CO₂ + H₂ How many moles of oxygen are necessary to react completely with 4.0 moles of propane (CH) ?

What are the two main classifications of energy resources?

A liquid is heated and a solid forms at the bottom of the beaker. Is this a physical or chemical change?

How to predict the formula of an ionic compound based on the charges of the ions?

Which of the following kingdoms in one-celled organisms