Convert 115 lb to kg

1. A substance that gets dissolved to create a solution is best described as to as

4. How many calories of heat are required to heat 1370 g of water from 21.3°C to 89.5°C?

Write the complete balanced equation for the following reaction: CaCl2 + Na3PO4 yields NaCl + Ca3 (PO4) 2

A solution is made by mixing 114. g of benzene C6H6 and 83. g of acetyl bromide CH3COBr. Calculate the mole fraction of benzene in this solution. Round your answer to 3 significant digits.

For a given reaction, adding a catalyst increases the rate of the reaction by (1) providing an alternate reaction pathway that has a higher activation energy (2) providing an alternate reaction pathway that has a lower activation energy (3) using

A radioactive nuclide that is used for radiation therapy for cancer has 33 neutrons and a mass number of 60. Which is the correct symbol for this nuclide? Superscript 27 subscript 60 upper C o. Superscript 33 subscript 60 upper C o.

Ions are atoms that have an electrical charge because they have gained electrons or lost electrons. If a neutral atom GAINS an electron, what is it's charge? Positive Negative Neutral

Can the groups of the periodic table be numbered in two different ways

Zn (s), Zn (NO3) 2 (0.30 M) || Ag (s), AgNO3 (0.010 M) 1. Draw the schematic of the electrochemical cell that you created including all the components (metals, solutions, salt bridges, voltmeters, etc.) in this portion of the experiment.

What change occurs in the atoms as we move down each chemical family?