Which is a balanced equation for this reaction?

A. Fe + H2SO4? Fe2 (SO4) 3 + H2

B. 2Fe + H2SO4? Fe2 (SO4) 3 + H2

C. Fe + 3H2SO4? Fe2 (SO4) 3 + 3H2

D. 2Fe + 3H2SO4? Fe2 (SO4) 3 + 3H2

A person runs with a constant velocity of 1.2 m/s for 30 seconds. how far do they travel?

What does the 4 mean in the formula 4Na2SO3?

How much heat does it take to raise the temperature of 5.0 kg of plastic from 15°C to 75°C? The specific heat of plastic is 2.60 kJ / (kg•°C), Use Q = mc Tp-T). A. 300 kJ B. 780 kJ C. 196 kJ D. 980 kJ

You observe our moon rising on the horizon at 6 pm. what will you see 6 hours later? a. a first quarter moon b. a waning gibbous moon c. a full moon on or near your meridian d. a waxing crescent moon

What is the maximum number of bonds that can form in a molecule with a central atom containing five electrons in sp 3 hybrid orbitals?

Which phases of matter do molecules have the lowest amount of energy?

How many Oxygen (O) atoms are in the following? H2O + CO2 4 3 2

How does surface roughness affect friction

Why does it hurt your hands when you carry heavy shopping in carrier bags?

Why did scientists choose carbon as a base for the atomic mass unit? Which isotope of carbon did they use?