Why is it important to know a tornados velocity and not just its speed

What property of the materials used in computer chips makes them useful as switches that turn electricity on and off

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.

Many pollutants from coal-fired power plants are properly managed today. Which of the following is currently considered to be the biggest threat to the environment? Many pollutants from coal-fired power plants are properly managed today.

What is the molarity of 10.0 g of NaCl dissolved in water to make 100. mL?

For the nitrogen fixation reaction, 3h2 (g) + n2 (g) 2nh3 (g), kc = 6.0 * 10-2 at 500°c. if 0.250 m h2 and 0.050 m nh3 are present at equilibrium, what is the equilibrium concentration of n2? a. 3.3 m b. 2.7 m c. 0.20 m d. 0.083 m e. 0.058 m

Zinc phosphide, Zn3P2, is often used as a rat poison. Phosphorus has 5 valence electrons. How many valence electrons does each zinc atom lose?

Nonrenewable resources are?

Watch the animation, then check off the samples that will conduct electricity. Check all that apply. View Available Hint (s) Check all that apply. NaCl solution Solid NaCl Solid sugar Sugar solution

Burning wood represents a chemical change. True or False?

Why are phosphates in laundry detergent