Which statement about a negatively charged object is true? a. it has more electrons than protons. b. it has more protons than electrons. c. it has more neutrons than protons. d. it has the same number of electrons and protons.

The answer to your question would be A; it has more electrons than protons

When trying to identify negatively or positively charged objects, you have to think about the charges of the sub-atomic particles, in this case the protons, electrons and neutrons.

Electrons= negative overall charge

Protons= positive overall charge

Neutrons=neutral overall charge

therefore, if an object is negatively charged, it has to have more electrons than any other sub-atomic particle and hence the answer is A.

A. It has more electrons than protons.

Hope this helped

"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"