Which of the following statements describes the capabilities of an electroscope? Select all that apply. Electroscopes can measure the amount and type of charge.
Electroscopes can ONLY measure the amount of charge.
Electroscopes can ONLY indicate the type of charge.
Electroscopes are made up of insulating materials.
The distance the leaves spread apart is an indication of the amount of charge introduced to the electroscope.

Electroscopes can measure the amount and type of charge.

Explanation:

I got it right on Odyysseyware on my test.

58 km per hour : d

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles