Consider the reaction

B (s) + 32O2 (g) →B2O3 (s), ΔH = - 1270kJ

What will ΔH be for the reaction if it is reversed?

Express your answer with appropriate units.

What mass of gold is produced when 24.4 a of current are passed through a gold solution for 46.0 min?

One molecule of O2 is made of?

How many grams of O2 are needed to react with 18.2 g of NH3?

Which of these chemical formulas kci, xe, co2, or h2 - represents both an element and a molecule?

The electrolyte in a typical wet storage cell or battery is a mixture of water and A. lead. B. ammonium chloride. C. sulfuric acid. D. zinc.

Give 3-5 pieces of evidence to support why cloning is bad.

Nitrogen combines with oxygen to form nitrogen monoxide (no) and nitrogen dioxide (no2). a sample of no consists of 1.14 g of oxygen and 1 g of nitrogen.

The modern periodic table reflects many improvements to Mendeleev's original table. If Mendeleev's table was incorrect, why is it still studied in chemistry classrooms today?

Good evening everyone, I just wanted to know who's willing to talk to me

Explain how the nettle is adapted for defence and protection