Two people must have the same speed and velocity if A) they are walking toward each other at 2 m/s. B) they are walking away from each other at 2 m/s. C) they are jogging side by side at 5 m/s. D) they are jogging to two different destinations.

Summary Test 10: Chemical Quantities & Calculations 1. (a) Calculate the concentration of a solution if 5 moles of the solute are dissolved to form 10L of solution. n = 5 mol v=1OL P=?

Which force attracts one atom's protons to another atom's electrons?

How might the Egyptians have been able to move the heavy stone blocks?

What is the concentration of hydronium ion in a 0.121 M HCl solution? A) 1.0 M B) < 0.121 M C) 0.121 M D) not enough information

Which of the following is an inference? A burning candle is extinguished when it is covered with a jar. The candle burns longer than expected in a jar that has a plant in it. A plant lives longer than expected in a jar that has a burning candle.

Name four elements that have properties similar to chlorine

What are three signs that a chemical change has taken place

Youll get brainliest if you have it right! How much heat does 225 g of water gain when its temperature rises from 25%C to 32°C? A. 6.59kj B. 21.65 kj C. 0.376kj D. 30.12kj

Explain hydrocarbons as fue

How many grams of K2CO3 are needed to prepare a 400.0 mL of a 4.25M solution? 1.7 g 235 g 81.3 g 138 g