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devlian [24]
3 years ago
10

If you burn a piece of wood, it becomes a different substance. What type of

Chemistry
2 answers:
lbvjy [14]3 years ago
8 0

Answer:

B. Chemical property

Explanation:

zlopas [31]3 years ago
8 0

Answer:

B

Explanation:

a reaction has taken place in which you can't get back what you started with

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If ine mole of pennies were divided amung 250 million peoplein
Airida [17]

Answer:

2.4088\times 10^{13} dollars each person will receive.

Explanation:

Number of people in which 1 mole of pennies is distributed = 250 million =

1 million = 10^6

250 million = 2.5\times 10^8 persons

Number of pennies in 1 mole = 6.022\times 10^{23}

Pennies per person:

\frac{6.022\times 10^{23} pennies}{2.5\times 10^8 persons}=2.4088\times 10^{15} pennies/person

1 penny = 0.01 $

2.4088\times 10^{15} pennies/person=2.4088\times 10^{15}\times 0.01 \$/person=2.4088\times 10^{13} \$/person

2.4088\times 10^{13} dollars each person will receive.

7 0
3 years ago
natural selection is an example of a mechanism of evolution does this mechanism produce a change in individuals or populations e
skad [1K]

Answer: Yes, Natural selection is natures way of making the fittest and top dogs of the food chain, It can produce a change in individuals and populations by completely reducing or wiping out a population not fit for survival in its inviroment and can even force a change of the creature to make it able to survive.

Example: would be rabbits, a snow rabbit wouldn't survive very well in the desert and a jack rabbit wouldn't be able to survive in the cold winter due to temp and the fact that predators like wolves would be able to spot it easier from its color of its fur.

Note: Hope this helps, and I hope this is want it was asking. Good luck :)

8 0
3 years ago
Which of the following statements is not true of the phases of a given substance ?
velikii [3]

The particles of gases have more kinetic energy than liquids and gases.

Explanation:

  • We know that in case of solids the molecules are very tightly packed , in case of liquids the molecules are loosely packed and lastly in case of gases the molecules are very loosely packed.
  • As we known in case of solids energy present is very less and in case of liquids energy present is more than solids and lastly in case of gases the energy present is most.
  • Gases have more kinetic energy because the particles present in gaseous form can move easily without any obstruction.
3 0
3 years ago
G8_SCIENCE_BSA_21_22
S_A_V [24]

Answer:

Explanation: Over the course of a year, areas near Earth’s equator receive more direct energy from the Sun than areas near Earth’s poles.  Which of the following correctly describes one result of this heating pattern?


8 0
2 years ago
Consider the balanced equation below. 4NH3 + 3O2 --> 2N2 + 6H2O What is the mole ratio of NH3 to N2?
AURORKA [14]
The balanced equation given is:
4NH3 + 3O2 .....> 2N2 + 6H2O

From this equation, we can note that 4 moles of NH3 are required to produce 2 moles of N2.

Therefore, the mole ratio of NH3 to N2 is 4:2 which can be simplified into 2:1
4 0
2 years ago
Read 2 more answers
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