A student is testing water to know which is best for cleansing purposes with soaps. He would find that the cleansing action of soaps is best when he uses water obtained from

A. Rain

B. Tap

C. Hand pump

D. Pond

What is the pH of a solution with [H+]=6.2x10-9 M?

How do you calculate mass using density and volume?

Which is the fundamental law of energy? • Energy can be transferred but cannot be destroyed. • stored energy is kinetic Energy • Energy can be transferred but cannot be conserved • Energy of motion is potential energy

Audrey pours hot chocolate into a cup. How is heat energy transferred? A) Heat from the hot chocolate moves to the cup. B) Cold from the cup moves to the hot chocolate. C) Heat energy does not move because the heat is in a liquid.

What effect does smiling have on teacher giving no homework

Zinc put in concertrated sodium hydroxide

how do geologists use seismic waves to locate an earthquakes epicenter

Which formula id correctly paired with its name? A. MgSO↓ = magnesium chlorine B. FeO = iron (|||) oxide C. K↓2O = Phosphorus dioxide D. CuCI↓2 = copper (||) chloride

Suppose you find a rock that contains some potassium-40 (half-life of 1.3 billion years). you measure the amount and determine that there are 5 grams of potassium-40 in the rock.

What are some positive and negative effects of the production of maple syrup on society and the environment?