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VMariaS [17]
3 years ago
5

If an

Chemistry
2 answers:
svet-max [94.6K]3 years ago
7 0

Answer:

The object is moving in the negative direction!

Explanation:The object has a negative velocity) and is speeding up.

dexar [7]3 years ago
4 0

Answer:

I'm not 100% sure but I think it would be constant

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The placement of the double bond goes between which two atoms in this formaldehyde molecule? Note: Hydrogen, carbon, and oxygen
ludmilkaskok [199]

Its between the two hydrogen atoms (C) i hope i helped you guys out a bit.!

6 0
4 years ago
Read 2 more answers
Identify the numbers from the statements above as exact or measured. Sort these numbers into the proper categories.
elena-s [515]

Answer:

Here is a similar question ; Identify the numbers from the statements above as exact or measured Sort these numbers into the proper categories. 93 g of silver, One minute, 2.20 lb ,One kilogram ,27 miles ,One yard, 100 g of sterling silver ,60 s, 1gal ,3 ft Exact Measured

Explanation:

Here is a similar question ; Identify the numbers from the statements above as exact or measured Sort these numbers into the proper categories. 93 g of silver, One minute, 2.20 lb ,One kilogram ,27 miles ,One yard, 100 g of sterling silver ,60 s, 1gal ,3 ft Exact Measured

Exact number are known from scientific research that has been proven to be true and widely acceptable or are known from true definition. for example 0 degree celsius = 273k, 1atm = 101.325 kPa

while measured numbers are not widely acceptable, they are as a result of individual measurement and discretion. A may measure the mass of a stone to be 3.5g, another person B may measure the same stone and arrive at 3.4g.

  • exact numbers ; one minutes, One yard, One kilogram, 1gal, 3ft, 100g of sterling silver

  • measured numbers ; 93g of silver, 2.20 lb, 27 miles
3 0
3 years ago
Nitric oxide (NO) can be formed from nitrogen, hydrogen and oxygen in two steps. In the first step, nitrogen and hydrogen react
son4ous [18]

Answer:

ΔH  = - 272 kJ

Explanation:

We are going to use the fact that Hess law allows us to calculate the enthalpy change of a reaction no matter if the reaction takes place in one step or in several steps. To do this problem we wll add two times the first step to second step as follows:

N2(g) +         3H2(g) →          2NH3(g)                 ΔH=−92.kJ  Multiplying by 2:      

2N2(g) +       6H2(g) →          4NH3(g)                        ΔH=− 184 kK

plus

4NH3(g) +     5O2(g) →          4NO(g) +6H2O(g)        ΔH=−905.kJ

__________________________________________________

2N2(g) +   6H2(g) + 5O2(g)→  4NO(g)  + 6H2O(g)      ΔH = (-184 +(-905 )) kJ

                                                                                     ΔH =    -1089 kJ

Notice how the intermediate NH3 cancels out.

As we can see this equation is for the formation of 4 mol NO, and we are asked to calculate the ΔH  for the formation  of one mol NO:

-1089 kJ/4 mol NO  x 1 mol NO =  -272 kJ (rounded to nearest kJ)

5 0
3 years ago
Which planet is the largest?
Alexeev081 [22]

Answer:

1. Jupiter

2. Mercury

3. Venus

4. Venus

5. Jupiter

6. Neptune

7. Mercury

8. Saturn (used to be Jupiter)

4 0
3 years ago
El silicio está formado por un 93% del isótopo de masa atómica 28 uma un 4% del isótopo de masa atómica 29 uma y el resto por el
aalyn [17]

Answer:

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Explanation:

8 0
3 years ago
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