Im giving 30 points plus brainliest for correct answers !

i need with these chemistry problems

The answer to your question is:

Explanation:

3.- Convert each into

1.56 x 10⁴            =    15600

0.00259 x 10⁵    =        259

0.00259 x 10³    =        2.59

0.56 x 10⁻²         =    0.0056

0.000459 x 10⁻¹    = 0.0000459

0.0209 x 10⁻³    =     0.0000209

3.69 x 10⁻²         =     0.0369

13.69 x 10⁻²        =     0.1369

736.9 x 10⁵        =     73690000

6.9 x 10⁴            =         69000

4.- Calculate the following

a) 2653000 = 2.653 x 10⁶

b) -2687 = - 2.687 x 10³

c) 2.532 x 10²⁴

d) 1470 = 1.47 x 10³

each  column  of the  table  is called a group. elements in a group share similar properties. groups are  read  from  top  to  bottom. metal. metalloid. nonmetal. solid. liquid. gas. fe. hg. o.  2. 3. 4. 5. 6. 7. 8. 9.  2. beryllium. 9.012. 4.  sodium. 22.990.  11. 3.  magnesium. 24.305.  12.  potassium. 39.098.  19. 4.  calcium. 40.078.  20. i guess  i  

catya that's not even a b or c