Si alguien tiene tiempo libre y le entiende a esto, se lo agradecería mucho:(.

What’s the scientific notation for the number 6,840,000,000

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

Which answer tells the reason the earth’s climate is getting warmer? too many animals are becoming extinct. large glaciers are melting in antarctica. the earth is moving closer to the sun. driving cars gives off gases that trap heat in the atmosphere.