Ch4+o2 > CO2+H2O

what's the balance

What is the weight of a 75 kg. Mass?

An atom of potassium with a mass number of 40 is known as K-40. Use the periodic table to determine how many neutrons are present in an atom of K-40. Type the correct answer in the box. Use numerals instead of words. One atom of K-40 has neutrons.

Write a balanced net ionic equation for the reactions that occur when the following aqueous solutions are mixed. Include the physical states of each reactant and product. Do not subscript the phases.

Four ice cubes at exactly 0°C having a total mass of 53.5 g are combined with 115 g of water at 75°C in an insulated container.

What is the chemical composition of chromatin? A. It is pure DNA. B. It is DNA and protein. C. It is pure carbohydrates. D. It is carbohydrates and DNA.

For a given reaction, adding a catalyst increases the rate of the reaction by (1) providing an alternate reaction pathway that has a higher activation energy (2) providing an alternate reaction pathway that has a lower activation energy (3) using

An element which forms an oxide that dissolves in water to form an acidic solution.

Milk of magnesia is a base. What happens when you drink milk of magnesia for an upset stomach? A) It raises the pH of your stomach. Eliminate B) It lowers the pH of your stomach. C) It cleanses the stomach of harmful, painful bacteria.

Which of the following can be classified as an empirical formula? Why? A. S2Cl2 B. C6H10O4 C. Na2SO3

A student records the value 1.5 atm on a data table. The student is measuring what?