What is the mass number of 207Pb? A: 289 B: 207 C: 125 D: 82

Is the planet Uranus surface rocky or flat?

A patient needs to be given exactly 1000ml of 15% (w/v) intravenous glucose solution. The stock solution is 35% (w/v). How many milliners of the stock solution are needed to prepare the fluid for the IV bag?

The reliability or reproducibility of a measurement is it's

Imagine a balloon is made from a membrane that's permeable to water but not sucrose molecules. How would the concentration of sucrose inside the balloon be affected if the balloon is filled with a 50% sucrose solution and then placed in a beaker of

What is the format for scientific notation

Determine an empirical formula from each set of percent composition data. 1. 18.27% K, 59.30% I, 22.43% 0

What are the controlled, independent, and dependent variables of this experiment? The experiment is to drop 2 drops of food coloring in one glass of hot water, and one of cold water to see which has the faster rate of diffusion.

Aluminum foil used for storing food weighs about 0.3 g per square inch. How many atoms of aluminum are contained in one square inch of the foil?

Sulfur reacts with oxygen to form sulfur dioxide (SO2 (g), Hf = - 296.8 kJ/mol) according to the equation below. What is the enthalpy change for the reaction? Use

Comparing the mass of the nucleus with the mass of the protons and the mass of the neutrons refers to what? Einstein's theory of relativity nuclear binding energy the weak force the strong force mass defect