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just olya [345]
4 years ago
9

How do you find a neutron number?

Chemistry
1 answer:
MariettaO [177]4 years ago
6 0
The atomic mass of an element is the sum of the number of protons, neutrons, and electrons. Because electron mass is virtualy none it contributes to very little of an element's mass.

Thus the atomic mass is the sum of the number of electrons and protons. 

Therefore the number of neutrons can be found by subtracting the number of protons from the atomic mass
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Explain how temperature and amount of precipitation can affect the type of plants and animals found in the grassland biome?
MArishka [77]
Temperature grasslands have hot summers and cold winters. Summer temperatures can be well over 100 degrees Fahrenheit, while winter temperatures can be as low as -40 degrees Fahrenheit. They typically have between 10 and 35 inches of precipitation a year, much of it occurring in the late spring and early summer. As climate conditions shift geographically so will the distributions of many plants and animals. The relatively flat terrain of grasslands increases vulnerability to climate change impacts, because habitats and species must migrate long distances to compensate for temperature shift.
3 0
3 years ago
CO + 2H2 ⇌ CH3OH ΔH <0
sveta [45]

Answer:

C. The energy released as the bonds in the reactants are broken is greater than the energy absorbed as the bonds in the product are formed.

Explanation:

  • CO + 2H₂ ⇌ CH₃OH     ΔH <0

As ΔH is negative, the given reaction is exothermic.

That means that <em>the enthalpy of the product is less than the enthalpy of the reactants</em>. In other words, part of the energy from the reactants is used to form new bonds (between C and H, for example), while the other part is transfered outside the system as heat.

Thus the correct answer is C.

5 0
3 years ago
Which phase has the greatest structure
Dahasolnce [82]

Answer:

The answer is D

Explosion:

it depends on the solid,liquid,gas and the tempcher

6 0
3 years ago
Suppose that, from measurements in a microscope, you determine that a certain layer of graphene covers an area of 1.50μm2. Conve
Anton [14]
For the answer to the question above,
1∙5µm² = ? m² 
1m * 1m = 1m²     But 1m = 1,000,000µm = 1x 10^6µm   1x10^6µm * 1x10^6µm = 1m²      1x 10^12µm² = 1m² (Now, try dividing both sides by 1x10^12).   1x10^12µm² /(1x10^12) = 1m² /(1x10^12)    1µm² = 0∙000 000 000 001 m² (multiply both sides by by 1∙5).    1∙5µm² = 0∙000 000 000 0015 m²   

 1∙5µm² = 1∙5x 10^-12 m²
I hope this helps
7 0
4 years ago
Identify the types of information that are necessary to communicate with emergency responders. Select one or more: Any chemicals
oksano4ka [1.4K]

Answer:

How the incident happened

Any chemicals involved in an incident

Any other hazards present in the lab

Explanation:

Above are the types of information that are necessary to communicate with emergency responders. The emergency responders ask the first question that how the incident happened. After that they ask that is there any harmful chemicals are present in the laboratory or what types of chemicals present in the laboratory. These questions were asked by the emergency responders in order to give the patient a suitable treatment.

8 0
3 years ago
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