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Feliz [49]
3 years ago
10

PLZZ HELPP WILL MARK BRAINLIEST

Chemistry
1 answer:
Debora [2.8K]3 years ago
8 0
<h2>Balance Chemical Equation</h2>

1. N2 + 3 H2 = 2 NH3

2. 2 KCIO3 = 2 KCI + 3 O2

3. 2 NaCI + F2 = 2 CI + 2 NaF

4. 2 H2 + O2 = 2 H2O

5. Pb(OH)2 + 2 HCl = 2 H2O + PbCl2

6. 2 AlBr3 + 3 K2SO4 = 6 KBr + Al2(SO4)3

7. CH4 + 2 O2 = CO2 + 2 H2O

8. C3H8 + 5 O2 = 3 CO2 + 4 H2O

9. 2 C8H18 + 25 O2 = 16 CO2 + 18 H2O

10. FeCl3 + 3 NaOH = Fe(OH)3 + 3 NaCl

11. 4 P + 5 O2 = 2 P2O5

12. 2 Na + 2 H2O = 2 NaOH + H2

13. 2 Ag2O = 4 Ag + O2

14. S8 + 12 O2 = 8 SO3

15. 6 CO2 + 6 H2O = C6H12O6 + 6 O2

16. 2 K + MgBr2 = 2 KBr + Mg

17. 2 HCl + CaCO3 = CaCl2 + H2O + CO2

18. HNO3 + NaHCO3 = NaNO3 + H2O + CO2 - already balanced

19. 2 H2O + O2 = 2 H2O2

20. 2 NaNO3 + H2SO4 = Na2SO4 + 2 HNO3

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If the temperature of an area drops 8 degrees from one day the next the climate has changed.
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I would say false hope that helped
3 0
3 years ago
Convert 27.7 kilometers to centimeters.
Stolb23 [73]

Answer:

The correct answer is - 2770000 cm.

Explanation:

1 kilometer = 1000 meter

1 meter = 100 centimeter

1 kilometer = 100*1000 cm

1 km = 100000 cm.

then,

27.7 kilometers = 2.77 × 10^6 centimeters

So, 27.7 kilometers = 27.7 × 100000

= 2.77 × 106 or 2770000 centimeters.

7 0
3 years ago
Calculate the density of the items below. (D = M/V)<br> 1) M = 15g V = 5.0ml *
grin007 [14]

Answer:

<h3>The answer is 3.0 g/mL</h3>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume} \\

From the question

mass = 15 g

volume = 5 mL

We have

density =  \frac{15}{5}  \\

We have the final answer as

<h3>3.0 g/mL</h3>

Hope this helps you

5 0
3 years ago
What is the correct value for Avogadro's number?
nydimaria [60]

Answer: Option A. 6.022 x 10^23

Explanation:

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