Why are comets unlikely to be able to support life? A. A comet's environment is not stable. B. A comet does not have an atmosphere. C. A comet does not have a reliable energy source. D. all of these

Magnesium reacts with hydrochloric acid, hcl, to produce hydrogen gas (hint: a diatomic molecule) and magnesium chloride. write a balanced equation for this reaction.

Covert the number 603 km to cm

A titration of 0.1 M NaOH into 1.2 L of HCl was stopped once the pH reached 7 (at 25C). If 0.4 L of NaOH needed to be added to achieve this pH, what was the original concentration of the sample of HCl?

what if your friend joked that a cell is like his little brother's bathtub with tub toys floating in it

Why are ethics important when considering experiments? O A. It is important that people are not harmed for the sake of science. O B. Scientists would not be able to get funding if their experiments were not ethical. O C.

Correctly identify the generic formula for a synthesis reaction. a. AB + A+B b. A+B → AB c. CxHx + O2 → CO2 + H2O d. AB + C + AC + B e. AB + CD → AD + CB

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?