According to the big bang theory, approximately when did the universe begin?

4 billion years ago

7 billion years ago

11 billion years ago

13 billion years ago

What is the percent mass oxygen in acetone

What is the ideal gas constant? A. It is a universal constant used for all gases. B. It is a constant that applies only at STP. C. It is a specific constant for a particular gas. D. It is a constant that depends on the conditions.

Which terms describe space objects that are small chunks of rock and debris that are smaller than 1 km? Select three options meteoroids asteroids meteors meteorites comets

List the ideas of dalton

the half-life of plutonium-239 is 24,110 years. How much of an original mass of 100.0 grams remains after 96,440 years?

Which states of matter have no definite volume?

Which weighs more 10g of iron or 10g of water

Which pair of elements would combine to form an ionic compound? а b sodium and calcium sodium and chlorine carbon and oxygen carbon and sulfur с d

How many moles are there in 545g of Fe2O3?

How are magic minerals different from Felsic minerals? A. Mafic minerals contains lower levels of iron and magnesium. B. Mafic minerals contain more dark-colored, high-density minerals C.