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rjkz [21]
3 years ago
13

A group of organisms that share similar characteristics

Chemistry
2 answers:
kondor19780726 [428]3 years ago
5 0
It is called a chromosone ?!!!!
ExtremeBDS [4]3 years ago
5 0
 species, you can tell the difference of species if they do not live under those constraints prezygotic and postzygotic barriers. 
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The specific heat capacity of an unknown metal is 0.343 J/(g•°C). Calculate the energy required to raise the temperature of 224
Margarita [4]

Explanation:

the answer and explanation is in the picture

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3 years ago
4NH3 (g)+502(g)->6H20g)+4NOg) What is the enthalpy change for this reaction?
Feliz [49]
Enthalpy is energy of bonds broken - energy of bonds formed. Here, the NH3 and O2 are broken and H2O and NO are formed. So the energy to break the NH3 bonds is 3 times the amount of energy it takes to break a N-H single bond (because there are three of them in a NH3 molecule) and then multiplied by 4 because there are four particles.

So the energy of the bonds broken is 12x the energy to break a N-H single bond plus 5x the amount of energy to break an O—O double bond (you don’t multiply this by anything because in each O2 molecule there is only one bond).

The energy of the bonds formed is 6*2 = 12 Times the amount of energy for a O-H single bond plus 4 times the amount of energy required to break a N—O double bond.

Subtract energy of bonds broken - energy of bonds formed and this is the change in enthalpy.

To know what type of bond it is, draw the Lewis structure.
7 0
3 years ago
Considering the activity series given below for metals and nonmetals, which reaction will occur?
Levart [38]

Answer:

Given the activity series of elements, the reaction that will occur is: 2AgNO3 + Ni -----> Ni(NO3)2 + 2Ag

3 0
2 years ago
Is the production of nitrogen(II) oxide exothermic or endothermic?
LuckyWell [14K]
It’s a exothermic reaction.
3 0
2 years ago
Write the number 0.0000087 in scientific notation.
miskamm [114]

Answer:

8.7 × 10-6

Explanation:

sorry if incorrect

6 0
2 years ago
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