A toy car moving with an average velocity of 0.55 m/s moves for a period of 6.2 seconds in a straight line. What was the displacement of the toy car?

Phosphine, ph3 (g), combusts in oxygen gas to form water vapor and solid tetraphosphorus decaoxide. express your answer as a balanced chemical equation. identify all of the phases in your answer.

The following reaction does not proceed to a product: H2O + Cu - - > no reaction. Why is that? a. Copper has a lower activity than hydrogen and cannot replace it. b. The reaction cannot occur because water is a reactant. c.

Which of the following substance is not an acid? 1. Substance A is tested and found to have a pH of 3. 2. Substance B, a common food, tastes sour. 3. Substance C causes metals to corrode. 4. Substance D feels slippery in solution.

Is elephant toothpaste an exothermic or endothermic? How do you know?

What happens when acid and base are mixed together

When does a spring tide take place? At the beginning of spring Only during the spring season Only after spring is over At any time

The highest cloud are known as

What is the mass of 4.85 X 10^22 atoms of iron (Fe) ?

If element x has 95 protons how many electrons does it have

Which of the following when dissolved in deionized water would make a good conducting solution? a) methanolb) sugarc) baking soda