All categories

3 years ago

2 × ( 6 ÷ 2 ) × 80 =

Chemistry

2 answers:

borishaifa [10]3 years ago

3 0

2*3*80

6*80=480

That is the answer

earnstyle [38]3 years ago

3 0

Always remember PEMDAS. parenthesis Exponets, multiplication, division, addition, subtraction
So first you do your equation in the parenthesis which is (6/2) that is 3. Next you do 2 x 3 which is 6
Times 80
And you have 480 as ur answer

You might be interested in

Use bond energies from Table 10.3 in the textbook to estimate the enthalpy change (ΔH) for the following reaction. C2H2(g)+H2(g)

Digiron [165]

Answer: $=176.6kJmol^{-1}$

Explanation:Bond energy of H-H is 436.4 kJ/mole

Bond energy of C-H is 414 kJ/mol

Bond energy of C=C is 620 kJ/mol

Bond energy of C≡C is 835 kJ/mol

$\Delta H= {\text {sum of bond energies of reactants}}- {\text {sum of bond energies of products}}$

$\Delta H$ = {1B.E(C≡C)+2B.E(C-H) +1B.E(H-H)} - {1B.E(C=C)+4B.E(C-H)}

$\Delta H= {1B.E(835kJmole^{-1})+2B.E(414kJmole^{-1}) +1B.E(436.4kJmole^{-1})} - {1B.E(620kJmole^{-1})+4B.E(414kjmole^{-1})}$

$=176.6kJmol^{-1}$

7 0

3 years ago

Are atoms the smallest particles we know about, or are there smaller ones?

Schach [20]

Answer:

That we know about yes, but physicians still say there are more things out there. (we do not know about these yet tho)

Explanation:

7 0

3 years ago

How many protons, neutrons, and electrons make up an ion of

yKpoI14uk [10]

Answer:

protons=15

electron=15

neutron=16

6 0

3 years ago

What types of atoms will experience radioactivity?

Otrada [13]

Answer:

Alpha particles, Beta particles, Gamma rays

Alpha Is the least harmful

Beta is second most harmful

Gamma is most dangerous

Explanation:

3 0

3 years ago

How many O atoms are in 1.25 mol of SO2

Alex73 [517]

The number of O atoms that ate in 1.25 mol of SO2 is 2.5 moles

<em><u>calculation</u></em>

moles of O= total number O atoms in SO2 x 1.25 moles

The number of O atoms in SO2 = 1 x2 = 2 atoms

moles is therefore= 2 x 1.25 moles = 2.5 moles

4 0

3 years ago