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inessss [21]
3 years ago
8

What mass of ammonia can be produced if 13.4 grams of nitrogen gas reacted ?

Chemistry
1 answer:
aivan3 [116]3 years ago
3 0

Answer:

If 13.4 grams of nitrogen gas reacts we'll produce 16.3 grams of ammonia

Explanation:

Step 1: Data given

Mass of nitrogen gas (N2) = 13.4 grams

Molar mass of N2 = 28 g/mol

Molar mass of NH3 = 17.03 g/mol

Step 2: The balanced equation

N2 + 3H2 → 2NH3

Step 3: Calculate moles of N2

Moles N2 = Mass N2 / molar mass N2

Moles N2 = 13.4 grams / 28.00 g/mol

Moles N2 = 0.479 moles

Step 4: Calculate moles of NH3

For 1 mol N2 we need 3 moles H2 to produce 2 moles NH3

For 0.479 moles N2 we'll produce 2*0.479 = 0.958 moles

Step 5: Calculate mass of NH3

Mass of NH3 = moles NH3 * molar mass NH3

Mass NH3 = 0.958 moles * 17.03 g/mol

Mass NH3 = 16.3 grams

If 13.4 grams of nitrogen gas reacts we'll produce 16.3 grams of ammonia

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Free fall is a situation in which the only force acting upon an object is gravity. Why do all objects in free fall have
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Answer:

Because the acceleration due to gravity does not depend on the mass of the object

Explanation:

An object is said to be in free fall if there is only one force acting on it: the force of gravity, whose magnitude is

F=mg

where

m is the mass of the object

g=9.8 m/s^2 is the acceleration due to gravity

From the formula, we observe that the force of gravity acting on an object depends on its mass. However, its acceleration does not. In fact, according to Newton's second law of motion, the net force acting on an object is equal to the product between its mass and its acceleration:

F=ma

where a is the acceleration. By combining the two equations, we get:

ma=mg\\\rightarrow a = g

which means that the acceleration of any object in free fall is equal to g, the acceleration due to gravity, because it does not depend on the mass of the object.

6 0
3 years ago
In an acid-base titration experiment, 50 mL of a 0.05 M solution of acetic acid (Ka= 1.75 x 10-5 ) was titrated with a 0.05M sol
Viktor [21]

Answer:

(3) 5.36

Explanation:

Since this is a titration of a weak acid before reaching equivalence point, we will have effectively a buffer solution. Then we can use the Henderson-Hasselbalch equation to answer this question.

The reaction is:

HAc + NaOH ⇒ NaAc + H₂O

V NaOH = 40 mL x 1 L/1000 mL = 0.040 L

mol NaOH reacted with HAc = 0.040 L x 0.05 mol/L = 0.002 mol

mol HAC originally present = 0.050 L x 0.05 mol/L = 0.0025 mol

mol HAc left after reaction = 0.0025 - 0.002 = 0.0005

Now that we have calculated the quantities of the weak acid and its conjugate base in the buffer, we just plug the values into the equation

pH = pKa + log ((Ac⁻)/(HAc))

(Notice we do not have to calculate the molarities of  Ac⁻ and HAc because the volumes cancel in the quotient)

pH = -log (1.75 x 10⁻⁵) + log (0.002/0.0005) = 5.36

THe answer is 5.36

5 0
3 years ago
Read 2 more answers
Which kind of bond occurs when two atoms share an electron
Dmitriy789 [7]

Answer:

<h2>Covalent bond</h2>

Explanation:

6 0
4 years ago
9. What is useful in constructing scientific questions, methods, and explanations?
Varvara68 [4.7K]

Answer: C

creativity

Explanation:

C. Because the results of some experiments might not be explained by any

known theories.

3 0
3 years ago
D. Write the name of the branched alkane next to the drawing of the molecule. (2 points)
lbvjy [14]

Answer: hello your question lacks some data attached below is the missing data

answer :

a) 3-methyl heptane

b) 2-methyl pentane

c) 2-methyl heptane

d) 2-methyl hexane

e) 3-methyl hexane

Explanation:

we will select the longest carbon chain as the branched alkane and name it

a) 3-methyl heptane ( first diagram )

b) 2-methyl pentane ( second diagram )

c) 2-methyl heptane ( third diagram )

d) 2-methyl hexane ( fourth diagram )

e) 3-methyl hexane ( fifth diagram )

<em>Note : sixth diagram = first diagram </em>

7 0
3 years ago
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