Balance this equation C2H4 + O2 + CO2 + H2O

You are working out on the treadmill machine at the gym. The machine says that you are burning 110 calories per mile (110 calories = 1.0 mile). How many miles would you have to run to burn 500.0 calories?

What is the theoretical yield of waffles if you have 6 cups of flour, 9 eggs and 2 tbs of oil? Given: 2 cups flour + 3 eggs + 1 tbs oil 4 waffles

1) a) If a sample of pure hydrogen gas is ignited very carefully, the hydrogen burns gently, combining with the oxygen gas of the air to form water vapor. Write the unbalanced chemical equation for this reaction.

What is the mass of Ca (NO3) 2?

Light travels extremely rapidly (c = 3.00*108 m/s). Suppose you had to travel 40 miles to work every day. If you traveled at the speed of light for the entire trip, how long would it take you to get to work (in seconds) ? [1 mile = 1.61 km]

If the human body were a car, glucose would be:

Which part of the circulatory system contains blood rich in carbon dioxide (1) arteries (2) alveoli (3) veins (4) capillaries

Andrea was watching her brother in the ocean and noticed that the waves were coming into the beach at a frequency of 0.571429 Hz. How many waves hit the beach in 28 s? Answer in units of waves.

How many chloride ions are needed to cancel the 2 + charge of magnesium in magnesium chloride?

How many liters of air are in: A) a room that measures 10.0 ft * 11.0 ft and has an 8.00 ft ceiling? B) a room that measures 11.0 ft x 11.0 ft and has a 10.0 ft ceiling? 1 in. = 2.54 cm (exactly); 1 L = 103cm3