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Semenov [28]
3 years ago
9

Answer ASAP 25 points

Chemistry
2 answers:
kykrilka [37]3 years ago
8 0

<u>Answer:</u> The correct answer is NH_3 is the base and NH_4Cl is the salt.

<u>Explanation:</u>

Neutralization reaction is defined as the reaction in which an acid reacts with a base to produce salt and water as products.

According to the Bronsted-Lowry conjugate acid-base theory, an acid is defined as a substance which looses donates protons and a base is defined as a substance which accepts protons.

For the given chemical reaction:

NH_3+HCl\rightarrow NH_4Cl

Here, NH_3 is a base because it is accepting proton and HCl is an acid because it is loosing proton.

NH_4Cl is considered as a salt because it is formed by the combination of acid and base.

Hence, the correct answer is NH_3 is the base and NH_4Cl is the salt.

grin007 [14]3 years ago
7 0

Answer:

B

Explanation:

The answer is B because B is my favorite letter of the alphabet and I like it a lot.

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How many grams of phosphorus are in a sample containing 10^30 phosphorus atoms?
san4es73 [151]

Answer:

18.1 g

 

Explanation:

You know that the atomic weight of phosphorus is equal to  

30.794 u

, where  

u

represent the unified atomic mass unit.

The unified atomic mass unit is equivalent to  

1 g/mol

, but let's take the long road and prove that identity.

Now, the unified atomic mass unit is defined as  

1

12

th

of the mass of a single unbound carbon-12 atom in its ground state and is equivalent to

1 u

=

1.660539

⋅

10

−

24

g

This means that the mass of one phosphorus atom will be

30.974

u

⋅

1.660539

⋅

10

−

24

g

1

u

=

5.14335

⋅

10

−

23

g

You know that one mole of any element contains exactly  

6.022

⋅

10

23

atoms of that element - this is known as Avogadro's number.

Well, if you know the mass of one phosphorus atom, you can use Avogadro's nubmer to determine what the mass of one mole of phosphorus atoms

5.14335

⋅

10

−

23

g

atom

⋅

6.022

⋅

10

23

atoms

1 mole

=

30.974 g/mol

Finally, if one mole of phosphorus atoms has a mass of  

30.974 g

, then  

0.585

moles will have a mass of

0.585

moles

⋅

30.974 g

1

mole

=

18.1 g

From: https://socratic.org/questions/the-atomic-weight-of-phosphorus-is-30-974-u-what-is-the-mass-of-a-phosphorus-sam

3 0
3 years ago
One mole of which of these compounds contains two moles of hydrogen atoms?NaOH H2S NH3 CH4
Nookie1986 [14]

Answer:

H2S.

Explanation:

That would be H2S,  hydrogen sulphide. (Smells like bad eggs!).

8 0
3 years ago
Which scientist invented a model of the atom that most closely resembles the modern electron cloud model?
Colt1911 [192]
The scientist that invented a model that shows the electron cloud is Neil Bohr. <span />
5 0
3 years ago
What makes up an owl pellet?
arlik [135]
Owls are birds of prey. ... After an owl eats the small rodents, birds, and bugs that are a part of its nightly diet, its stomach cannot digest the fur, bones, teeth, feathers, and insect shells from that food. These “extra” parts are formed into a tight PELLET inside the owl and are then are later SPIT UP by the owl.
6 0
3 years ago
Read 2 more answers
A sample of gas is inside of a rigid container with fixed volume of 350mL. The initial pressure of the system is 366kPa, and the
Cerrena [4.2K]

Answer:

457.5kPa

Explanation:

Given data

V1=V2=350mL  (<em>fixed volume</em> )

P1=366kPa

T1= 88 degrees Celsius

P2=??

T2= 110 degrees Celsius

For the general gas equation

P1V1/T1= P2V2/T2

V1=V2

P1/T1= P2/T2

Substitute

366/88= P2/110

Cross multiply we have

P2*88=366*110

P2*88= 40260

P2= 40260/88

P2= 457.5 kPa

Hence the pressure will change to 457.5kPa

3 0
3 years ago
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