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maksim [4K]
3 years ago
9

The carbon cycle has several sources including all of the following except:

Chemistry
1 answer:
lorasvet [3.4K]3 years ago
6 0
The carbon cycle has several sources including all of the following (animals, sediment, plants) except nitrogen. 
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2. As NH4OH is added to an HCl solution, the pH of the solution
chubhunter [2.5K]

Answer:

c

Explanation:

Nh4OH + HCL ---> NH4Cl + H3O

so ph decreases as H3O increases

and OH also decreases

5 0
3 years ago
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How many neutrons does an element have if its atomic number is 42 and its mass number is 155? (10 Points)
sertanlavr [38]

The Element would have 197 neutrons

8 0
3 years ago
If 10.62 mL of a standard 0.3330 M KOH solution reacts with 98.20 mL of CH3COOH solution, what is the molarity of the acid solut
Nikolay [14]

Answer:

0.036 M of CH_{3} COOH

Explanation:

It is an example of acid-base neutralization reaction.

KOH  + CH_{3} COOH  ----> CH_{3} COO^{-} K^{+}   +   H_{2}O

Base           Acid                           Salt                                    

When two component react then the number of moles of both the component should be same, therefore the number of moles and acids and bases should be the same in the following .

Molarity= \frac{\textrm{No. of Moles}}{\textrm{Volume of the Particular Solution}}

No.of moles= Molarity × Volume of the Particular Solution

Therefore,

M_{1}V_{1} =M_{2}V_{2}------------------------------(1)

where

M_{1}= Molarity of Acid

V_{1}= Volume of Acid

M_{2}= Molarity of Base

V_{2}= Volume of Base

M_{1}=0.3330 M

V_{1}=10.62 mL

V_{2}=98.2 mL

M_{2}=??(in M)

Plugging in Equation 1,

0.3330 × 10.62 =M_{2}  × 98.2  

M_{2}=\frac{0.3330*10.62}{98.2}

M_{2}=0.036 M

3 0
3 years ago
In a chemical equation the arrow (indicating a reaction) points in which direction
Murrr4er [49]
Depending if the reaction is a reversible or an irreversible one, the direction of the arrow will point in one direction or 2 directions from reactants to products.
3 0
3 years ago
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In an element’s square on the periodic table, the number with the greatest value represents the
sergey [27]

Answer: D.atomic mass.

Explanation: The general representation of an element is given by: _Z^A\textrm{X}

X = chemical symbol of element

Z= atomic number= which represents the number of electrons.

A= mass number or atomic mass =which represents the number of electrons + number of neutrons

Thus mass number is greater than number of electrons and number of neutrons as it is the sum of both.




6 0
3 years ago
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