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jekas [21]
3 years ago
14

Which word signals a nonrestrictive clause in a complex sentence? T F

Chemistry
1 answer:
djverab [1.8K]3 years ago
7 0
Which.i think its the answer
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How many atoms of gold are in gold nugget with a mass of 4.25 g
Feliz [49]
Number of Atoms in Gold for given mass can be calculated using following formula,

              # of Moles  =  Number of Atoms / 6.022 × 10²³
Or,
             Number of Atoms  =  Moles × 6.022 × 10²³     ------- (1)    

Calculating Moles,
As,
                              Moles  =  Mass / M.mass
So,
                              Moles  =  4.25 g / 196.96 g/mol

                              Moles  =  0.0215

Putting value of mole in eq.1,

             Number of Atoms  =  0.0215 × 6.022 × 10²³

             Number of Atoms  =  1.299 × 10²²

Result:
            4.25 g 
of Gold Nugget contains 1.299 × 10²² Atoms.
3 0
3 years ago
Read 2 more answers
Which one of the following metals would NOT displace hydrogen from a dilute solution of HCl? 1. Ag 2. Fe 3. Al 4. Ni
jolli1 [7]

Answer:

Ag

Explanation:

To determine which element will displace hydrogen from a dilute acid, we need to make reference to the activity series or the electrochemical series. The activity series is a list of metallic ions according to their electropositivity.

This means elements are ranked here based on how electrically positive they are. Hence, an element above another element is relatively more electropositive than the one under it. For example calcium is less electropositive compared to sodium as calcium is found under sodium in the list.

Now, for an element to displace hydrogen, it means the particular element is more electropositive than hydrogen on the activity series. All the elements in the options are in a greater position relative to hydrogen on the activity series except silver. This means it cannot displace hydrogen from a dilute mineral acid

7 0
3 years ago
How many neutrons are probably in the nucleus of an element of atomic weight 197? 
Ratling [72]
Atomic weight = 197
symbol = Au
electrons = 79

neutrons = 197 - 79 = 118

<u>answer: E</u>
4 0
3 years ago
To change a solid to a liquid, you need to increase / decrease the amount of heat energy
nataly862011 [7]
Increase because of the higher the temp
7 0
2 years ago
Read 2 more answers
Which type of energy does moving water have?
solong [7]
Moving water has kinetic energy
5 0
2 years ago
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