Which of these is an appropriate instrument to measure mass?

balance

scale

ruler

graduated cylinder

The universe is estimated to be how old? A. 2 million years B. 4 million years C. 4.6 billion years D. 13 to 14 billion years

The concentration of pb2 + in a commercially available standard solution is 1.00 mg/ml. what volume of this solution should be diluted to 6.0*102 ml to produce a solution in which the concentration of pb2 + is 0.054 mg/l?

Which of the following statements is true about cohesion? a It results in surface tension. b it produces a surface film. c It is the attraction between particles of the same substance. d all of the above.

What is the net Ionic equation of HClO4 (aq) + NaOH (aq) = H2O (l) + NaClO4 (aq)

Renewable energy is an energy source that will not run out will not increase in cost will not cause pollution can be recycled

Determine the relative formula mass of glucose (C6H12O6) using the periodic table below. A. 29.1 g/mol B. 24.0 g/mol C. 15.0 g/mol D. 180.1 g/mol

How many moles of potassium chloride are in 28 grams of KCl? A.).265 mole KCl B.).856 mole KCl C.).376 mole of KCl (think it's this but idk) D.) 1.2 mole KCl

An unknown liquid has a pH lower than 7, conducts electricity poorly, and tastes sour, what kind of solution is the unknown?

Five beans have a mass of 2.1 g. How many beans are in 0.454 kg of beans.

As the temperature of a liquid goes up, the average speed of its particles. This means that the kinetic energy of the particles