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olganol [36]
3 years ago
14

What is the center of the atom called?

Chemistry
2 answers:
AnnZ [28]3 years ago
6 0

Answer:

nucleus

Explanation:

thats 100% the answer

GenaCL600 [577]3 years ago
3 0
The answer is nucleus
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How to solve 2 and 3
GarryVolchara [31]
Use the Heat formula for both problems.

q=m*c*∆t

Where
q= heat in Joules
m= mass in grams
c= specific heat which is a constant 4.18
∆t= change in temperature
3 0
3 years ago
How many grams of KBrO2 are there in 0.168 moles
Mnenie [13.5K]

Hey There!

Molar mass KBrO2 = 151.0011 g/mol

1 mole KBr --------- 151.0011 g

So in 0.168 moles :

mass = number of moles * molar mass

mass = 0.168 * 151.0011

mass = 25.36 g of KBrO2

5 0
3 years ago
Mr. Gordon's science students are studying scale models of the Sun-Earth-Moon system. Mr. Gordon is using this model to show his
4vir4ik [10]
The sun is too small
3 0
3 years ago
What is the final, balanced equation that is formed by combining these two half reactions?
OLga [1]

Answer:

Cu + 2NO3- + 4H+ ---------> Cu2+ + 2NO2 + 2H20

Explanation:

The half reactions are;Cu ----------> Cu2+ + 2e-

NO3 + 2e + 2H* —------> N02 + H20

It is worthy to note that oxidation is the an increase in oxidation number while reduction is a decrease in oxidation number.

In the first half reaction involving Copper, copper has been oxidized as its oxidation number increased from 0 to +2.

IN the reduction half reaction, NO3- has been reduced as its oxidation number decreased from +5 to +4.

In balancing half reactions, the following must be observed;

1. split the reactions into half equations, one for oxidation and the other for reduction.

Cu ------> Cu2+ + 2e-   ( oxidation)

NO3- + 2e- -----> NO2   (reduction).

2. balance on half with respect to atoms and charges.

3. balance the other half with respect to atoms and charges

4. balance by adding H+ ions in acidic solution

NO3- + e- -------> NO2

(-1 )       (-1)             (0)

NO3- + 2H+ +e- -------> NO2

(-1)       (+2)     (-1)            (0)

5. balance hydrogen by adding water molecules

NO3 - + 2H+ + e - -------->  NO2 + H2O

6. combine both equations

Cu ---> Cu2+ + 2e-                                  *1

NO3- + 2H+ + e- -------> NO2 + H2O      *2

= Cu -----> Cu2+ + 2e-

2NO3- +4H+ + 2e- -------> 2 NO2 + 2H20

Combined equation  = Cu + 2NO3- + 4H+ ---------> Cu2+ + 2NO2 + 2H20

4 0
3 years ago
Sunglasses allow some light to pass through. Then that means sunglasses are _________________.
kodGreya [7K]

Answer:

B...

Explanation:

....just know I'm right

7 0
2 years ago
Read 2 more answers
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