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3 years ago

I'M GIVING 50 POINTS!!!!! NEEDS TO BE CORRECT EXPLAIN!!!!!!!!!

2 answers:

8 0

There are 3 types of atoms in an ammonia solution, NH4OH: nitrogen, hydrogen and oxygen. So, your answer in this context is A.
However, if you were considering just ammonia on its own (NH3) there are only two types of atoms, nitrogen and hydrogen.

RideAnS [48]3 years ago

6 0

Hey there!

<span>How many kinds of atoms are in ammonia, NH4OH?

Answer: There are 3 kinds of atoms in ammonia, NH4OH

Hope this helps
Have a great day (:
</span>

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There are two types of physical changes and chemical reactions- endothermic and exothermic. On the diagram below, which picture

Agata [3.3K]

Answer:

it is b because its releases heat in to all directions and not b because it staying inside and not releasing anything :)

Explanation:

6 0

4 years ago

Read 2 more answers

There are 64 pretzels in a 16-ounce bag how many proportion would be in a 5-ounce bag?

qwelly [4]

Answer:

20 pretzels.

Explanation:

So in the first bag there at 64 pretzels in 16-ounces.

We can divide both these numbers by 16, to get 4 pretzels per ounce.

If we multiply both numbers by 5, we get 20 pretzels per ounces.

So, 20 pretzels i5-ounce bag.

3 0

3 years ago

At what substrate concentration would an enzyme with a K_cat of 30.0 s⁻¹ and a Km of 0.0050 M operate at one-quarter of its maxi

Umnica [9.8K]

Answer:

The correct answer is option B.

Explanation:

Michaelis–Menten 's equation:

$v=V_{max}\times \frac{[S]}{(K_m+[S])}=k_{cat}[E_o]\times \frac{[S]}{(K_m+[S])}$

$V_{max}=k_{cat}[E_o]$

v = rate of formation of products

[S] = Concatenation of substrate = ?

$[K_m]$ = Michaelis constant

$V_{max}$ = Maximum rate achieved

$k_{cat}$ = Catalytic rate of the system

$E_o$ = initial concentration of enzyme

We have :

$v=\frac{V_{max}}{4}$

[S] =?

$K_m=0.0050 M$

$v=V_{max}\times \frac{[S]}{(K_m+[S])}$

$\frac{V_{max}}{4}=V_{max}\times \frac{[S]}{(0.0050 M+[S])}$

$[S]=\frac{0.005 M}{3}=1.7\times 10^{-3} M$

So, the correct answer is option B.

8 0

3 years ago

Using complete sentences, explain how to predict the products and balance the reaction between sulfuric acid and potassium hydro

Dahasolnce [82]

The product(s) of the reaction are to be determined given the reactants, sulfuric acid and potassium hydroxide. sulfuric acid is an acid, whereas potassium hydroxide is a basic. The results of this neutralizing process are salt and water.

<h3>What is the reaction between sulfuric acid and potassium hydroxide?</h3>

The result will be, H+ from H₂SO₄ reacts with OH- from KOH to generate H₂O. Also, K+ reacts with SO₄²⁻ to create K₂SO4₄

As a result, the balanced equation will be:

$\rm H_2SO_4 + 2KOH --- > K_2SO_4 + 2H_2O$

Thus, the product(s) of the reaction are to be determined given the reactants, sulfuric acid and potassium hydroxide. Sulfuric acid is an acid, whereas potassium hydroxide is a basic. The results of this neutralizing process are salt and water.

Learn more about potassium hydroxide

brainly.com/question/21904397

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6 0

3 years ago

How many milligrams of sodium fluoride are needed to prepare 100 ml of a sodium fluoride stock solution such that a solution con

Anastaziya [24]

The unit ppm (parts per million) should be numerically equal to the unit of mg/L (milligram per liter). First, we determine the volume of the stock solution in L.

V = (100 mL)(1 L/1000 mL)
V = 0.1 L

Then, the equation that would allow us to determine the value of mass is,

C = m/V

where C is concentration, m is mass, and V is the volume.

Substituting the known values,
2 = m/ 0.1

The value of m from the equation is 0.2.

Answer: 0.2 mg

3 0

3 years ago