How many moles are in 6.97g of Chromium?

0.134 moles

Explanation:

In order to solve this, we need to find the molar mass of Chromium, which we can see from the periodic table: it is 51.996 g/mol.

Now, we need to set up an equation to convert grams to moles:

Thus, the answer is 0.134 moles of Chromium.

Explanation:

Step 1:  Find how many moles

Formula →

← The g's cancel and there is only moles left on top

 Rounded - 0.13405 moles of Chromium

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

they vary. it used to be meat, grain, bread, candy, beverages, donuts, and fruits/vegetables. now they added exercise in.