# chemistry

How many moles of protons are present in 7.54 grams of Rubidium? Report your answer to 3 significant figures.

1. 👍 0
2. 👎 0
3. 👁 103
1. mols Rb = grams/atomic mass.
There are 37 protons in Rb; therefore, mols protons is mols Rb x 37

1. 👍 0
2. 👎 0

## Similar Questions

1. ### CHEM MOLES !@@!

Mole Calculation Worksheet 1) How many moles are in 15 grams of lithium? 2) How many grams are in 2.4 moles of sulfur? 3) How many moles are in 22 grams of argon? 4) How many grams are in 88.1 moles of magnesium? 5) How many moles

asked by Theresa on December 16, 2014
2. ### chemistry final step

If you have 24.98 grams of P and 74.99 grams of O2, how many moles of each compound do you have present? so I got .805 of P (limiting) and 2.343 O2 (excess) how do i do this step ? If you have 24.98 grams of P and 74.99 grams of

3. ### chemistry

How many grams of rubidium chloride are present in 125.0 mL of a 1.75M RbCl solution?

asked by Chris on February 7, 2013
4. ### Chemistry

A few questions...how many grams are in 48.7x10^24? I don't know how to convert atoms to grams. I can do moles to grams or moles to atoms, but not atoms to grams. My other problem is how do you convert moles to moles as in "how

asked by Angeline on April 20, 2009
5. ### chemistry

Enter the formula and state of the major species that result when a few grams (about 0.01 mol) of each substance is added to 100 mL of water. When appropriate use water to form species such as the hydronium ion. Separate multiple

asked by Judy on June 6, 2010
6. ### chemistry

Initially, there are 33 moles of A and 0 moles of B. How many moles of A and B will be present after the system reaches equilibrium? a) 33 moles A; 0 moles B b) 0 moles A; 33 moles B c) 3 moles A; 30 moles B d) equal amounts of A

7. ### Chemistry

A solution is created by dissolving 13.0 grams of ammonium chloride in enough water to make 265 mL of solution. How many moles of ammonium chloride are present in the resulting solution? When thinking about the amount of solute

asked by Onye on March 3, 2018
8. ### chemistry

This is a lengthy problem, but I really don't understand it. Any assistance given would be greatly appreciated. An analysis was done on a rock sample to determine its rubidium content. The rubidium content of a portion of rock

asked by Jane on February 15, 2010
9. ### Chemistry

Are these correct? 1. What is the formula mass for Mg(ClO3)2? mg=24.31 cl=35.45 x 2 = 70.9 o=16 x 6 = 96 24.31+70.9+96= Answer:191.2 amu 2.How many molecules of CO2 are in 4.5 moles of CO2? 4.5 x 6.022 x10^23=Answer 2.7x10^24

asked by Mattt K on October 25, 2009
10. ### Chemistry

Posted by Angeline on Monday, April 20, 2009 at 5:35pm. A few questions...how many grams are in 48.7x10^24? I don't know how to convert atoms to grams. I can do moles to grams or moles to atoms, but not atoms to grams. My other

asked by Angeline on April 20, 2009

More Similar Questions