Judy wanted to figure out the mass of her backpack. She put the pack on a

balance and added 3, 6, and 4 kg weights so that the balance was even. What

is the mass of her backpack?

A) 5kg

B) 9kg

C) 10kg

D) 13kg

Fundamental building blocks of all cell membranes are phospholipids, which consist of two hydrophobic fatty acid chains linked to a phosphate-containing hydrophilic head group.

Why might an earthquake have more than one intensity

Mass defect is associated with: nuclear fusion nuclear fission radioactive decay mass lost by nuclear collisions

Ammonium hydroxide is neutralized by sulfuric acid to produce ammonium sulfate and water. It will make ___ mol ammonium sulfate when you neutralize 11.00 g ammonium hydroxide. __ NH4OH + __ H2SO4 → __ (NH4) 2SO4 + __ H2O

Find the number of moles of carbon atoms present in 3 moles of methane

Which has the highest viscory? Milk? Water? Orange juice?

What was venter's comtributionto science?

How many atoms are in 151 g of calcium?

Which statements about the formation of the solar system are true and in a correct order? A. A black hole collapsed to form the sun; small planetary objects formed; small planetary objects collided with each other to form larger objects. B.

Which is an important step in the alternate method for balancing equations in redox reactions? a) indicating the types of bonds found in the molecules. b) determining the speed at which reactions take place.