What does it mean to be an accurate measurement? What is important when making accurate measurements?

Zn + H2SO4 ZnSO4 + H2 The mole ratio of zinc to zinc sulfate is

Pizza is an example of a homogeneous mixture.

Element X has five valence electrons, element Y has one valence electron, and element Z has five valence electrons. Which two of these elements are most likely to have similar properties? Explain your answer

What do all organic substances have in common

The definition of absorption is the conversion of food, in the mouth, stomach and intestines, into soluble and diffusible material. Question 8 options: True False

Extend E1 Explain why the arrangement, movement and energy of particles change during changes of state.

What is in a banana? give me specifics?!

Addition of an excess of lead (II) nitrate to a 50.0mL solution of magnesium chloride caused a formation of 7.35g of lead (II) chloride precipitate. What was the molar concentration of chloride ions in the solution (in mol/L) ?

2.70 L of a gas has a pressure of 0.63 atm. What is the volume of the gas at 105 kPa?

Which statements describe Rutherford's model of the atom? Select all that apply.