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Savatey [412]
3 years ago
11

How many neutrons are present in a nucleus whose atomic number is one and whose mass number is one?

Chemistry
1 answer:
nekit [7.7K]3 years ago
8 0

Because the proton has a mass of 1 and a neutron has a mass of 1, we know that there is exactly one proton in the nucleus (because of the atomic number) which therefore tells us there are no neutrons as adding one would make the mass more than one.

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How many hydrogen moles are in 2.5 moles of aspartame c14h18n2o5
STALIN [3.7K]
Firstly, we need to convert 3g aspartame into moles aspartame. In order to do this we have to find the molecular mass of aspartame (the total weight of each atom of the molecule combined. This figure can be used to construct a conversion factor so that the grams may be converted into moles. Molecular weights for each atom can be found on any periodic table. Avagadro's number (6.022*10^23) is a constant value that expresses the number of molecules in one mole of a substance. 

The molecular weight for aspartame is 294.3 grams per mole. 

The process of finding how many atoms of H there are in 3.00g of aspartame would be like this: 

1. 3g * 1mol/294.3g = .01mol aspartame (this is converting grams to moles) 

2. .01mol * 6.022*10^23 = 6.022*10^21 (This is finding the number of molecules) 

3. (6.022*10^21) * 18 = 1.08*10^23 

This 3rd calculation is done because in part 2, you calculated the number of molecules of aspartame there were in 3g. In each molecule of aspartame there are 18 hydrogen atoms. So the final answer is: 
1.08*10^23 hydrogen atoms.
3 0
3 years ago
How many grams of barium hydroxide are required to dissolve in 156 g of water to make a 0.247M solution
Rudiy27

Answer:

The molar mass of barium hydroxide, 171.34 g/mol

7 0
3 years ago
Read 2 more answers
In what unit do we usually measure the force of the earth gravity? Acceleration due to gravity is 9.8/s^2
stepladder [879]

Answer:

in short weight

Explanation:

weight is mass x gravitational pull on an object

8 0
3 years ago
Bubbles of H2 form when metal D is placed in hot H₂O. No reaction occurs when D is placed in a solution of a salt of metal E, bu
Anika [276]

The order of reducing strength are as follow

E > D > F .

Since there is no reaction with D and salt of E it indicates that D is less reactive than the E. When D react with the salt F , a reaction take place which indicates that D is more reactive than F.

So reactivity can be given in the order

E > D > F .

So, F is least reactive so it neither displace E nor D

So, in first reaction

Metal F + Salt of E ------ No reaction will be observed

No reaction is observed between metal F and salt E

B) As we founded that E is more reactive than D and, D react with H2O

E is also get to react with H2O.

Thus, the order of reducing strength are as follow

E > D > F .

learn more about reducing strength:

brainly.com/question/13699873

#SPJ4

8 0
2 years ago
The germ theory of disease eventually led to the development of _______.
a_sh-v [17]

The germ theory of disease eventually led to the development of certain types of vaccines. This theory explains that specific type or types of microorganisms, which are bacteria, virus, fungi, or protest species, cause some diseases. These organisms can enter the human body, and can even grow and reproduce, causing infection, inflammation to specific organs in the body, and others. One particular vaccine developed successfully through this understanding is the smallpox vaccine, which is an important vaccine up to this day.




7 0
3 years ago
Read 2 more answers
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