1) Calculate the percent composition of each element in ammonia (NH).

Answers

Answer 1

Answer:

[tex]\% N=82.2\% \\\\\% H=17.8\%[/tex]

Explanation:

Hello there!

In this case, since ammonia is NH₃, we can see nitrogen weights 14.01 g/mol and hydrogen 3.03 g/mol as there is one only nitrogen atom and three hydrogen atoms; thus, the total mass is 17.04 g/mol. In such a way, the percent composition of each element turns out to be:

[tex]\% N=\frac{14.01}{17.04}*100\%=82.2\% \\\\\% H=\frac{3.03}{17.04}*100\%=17.8\%[/tex]

Best regards!


Related Questions

What is the number of moles in 125ml of 0.25 M NaNO3solution?

Answers

Answer:

0.0313 mole.

Explanation:

From the question given above, the following data were obtained:

Volume of solution = 125 mL

Molarity of NaNO₃ = 0.25 M

Number of mole of NaNO₃ =?

Next, we shall convert 125 mL to litre (L). This can be obtained as follow:

1000 mL = 1 L

Therefore,

125 mL = 125 mL × 1 L / 1000 mL

125 mL = 0.125 L

Thus, 125 mL is equivalent to 0.125 L.

Finally, we shall determine the number of mole of NaNO₃ in the solution. This can be obtained as follow:

Volume of solution = 0.125 L.

Molarity of NaNO₃ = 0.25 M

Number of mole of NaNO₃ =?

Molarity = mole / Volume

0.25 = mole of NaNO₃ / 0.125

Cross multiply

Mole of NaNO₃ = 0.25 × 0.125

Mole of NaNO₃ = 0.0313 mole.

Some elements got their names from ancient languages
such as Greek or Latin
TRUE or FALSE
If so list some examples of elements

Answers

True. Examples: Calcium Helium Mercury

Answer:

True

Explanation:

this was on one of my quizziz

Which obstacle was faced by African Americans serving in the armed forces during World War II?
They were forced to serve in segregated units.
They were not subject to military conscription.
ОООО
None of them ever saw combat during the war.
They were placed under French command.

Answers

They were not subject to military conscription

How does each structure of a sperm cell contribute to the sperm's function?

Answers

The midpiece of the sperm is packed with mitochondria. Mitochondria are organelles in the cell that produce energy. Sperm use the energy in the midpiece to move. The tail of the sperm moves like a propeller, around and around.

Who was the US president during the crisis?
a
Carter
bKennedy
CRegan
D
Washington

Answers

The president is Carter so it's A.

Answer:

D Washington hope it helps

How many grams of a 26.9% sugar solution contain 49.0 g of sugar?

Answers

Answer:

182.156g

Explanation:

grams = 49/.269 = 182.156g needed

Carbon dioxide ( a greenhouse gas) is breathed out by billions of people all over the world? Yes or no

Answers

Answer:

yes

Explanation:

Answer:

yes

Explanation:

Humans inhale oxygen and breath out carbon dioxide.

Convert 5.7 kcal to its value in calories.

Answers

Answer:

5700

Explanation:

Choose a reasonable explanation to account for the differences. There may be more than one possible reason that makes sense, just select one of them.
A. It is possible not all of the water was evaporated from the sand, causing the recovered mass to be higher.
B. It is possible not all of the water was evaporated from the sand, causing the recovered mass to be lower.
C. While drying the NaCl, the liquid boiled and some splattered out of the evaporating dish, causing the recovered mass to be lower
D. While drying the NaCl, the liquid boiled and some splattered out of the evaporating dish, causing the recovered mass to be higher.
E. There was no difference in recovered and original mass, so there is no difference to account for.

Answers

Answer:

A. It is possible not all of the water was evaporated from the sand, causing the recovered mass to be higher

D. While drying the NaCl, the liquid boiled and some splattered out of the evaporating dish, causing the recovered mass to be higher.

Explanation:

Sand absorbs water and stores it. The sunlight causes the water to evaporate but sand can hold some of the water inside it. This results in increase in mass of the sand. The mass of sand before and after the water evaporation can be different.

How are humidity and precipitation related?

A. When humidity is low, the chance of precipitation is high.

B. When humidity is high, the chance of precipitation is high.

C. When humidity is high, the chance of precipitation is low.

D. Changes in humidity do not cause precipitation.

Answers

D cuz it says the answer

Which of this is formed when a metal reacts with steam ? *

Carbon dioxide
A Salt
An oxide
A metal hydroxide


Answers

I believe its metal hydroxide
Answer:
A metal hydroxide
I think so

Please help I’ll mark brainliest :)

Answers

Answer:

Biotechnology is the use of living organisms through modification to  make products of technological or industrial significance.

positively, biotechnology can be used in manufacture of medicine and also synthetic forms of various hormones for use in the health and medical field.

negatively biotechnology may be manipulated for use in wars as biological warfare that can lead to loss of lives and environmental degradation

Explanation:

Answer: Biotechnology is the use of living organisms through modification to make products of technological or industrial significance.

positively, biotechnology can be used in manufacture of medicine and also synthetic forms of various hormones for use in the health and medical field.

negatively biotechnology may be manipulated for use in wars as biological warfare that can lead to loss of lives and environmental degradation


Part A
Of the atoms below, ____
is the most electronegative.
- As
- Si
- P
- N
- C

Answers

Answer:

N

Explanation:

Electronegativity increases as you move from left to right across a period, and decreases as you move down the groups.

Answer:

N .. ........................

Zinc metal reacts with copper sulfate through the following
reaction:
Zn + CuSO4 → Cu + ZnSO4
The percent yield for a reaction in which 32.5 g of Zn is reacted
in excess CuSO4 solution is 85.0 %. What is the actual yield of
copper of this reaction?
g

Answers

Answer:26.9

Explanation:

The water cycle is a necessary process that moves water through an ecosystem. The part of the water cycle when water vapor changes back into a liquid in the atmosphere and begins forming clouds is called
A. condensation
B. transpiration
C. evaporation
D. precipitation

Answers

Answer:

A

Explanation:

Helpppp!!!
Which Advantages do instrumental methods of chemical analysis have over traditional methods?
A. Accuracy, Sensitivity, identification, and automation

B. Accuracy, sensitivity, outsourcing, and automation

C. Accuracy, analysis, rapidness, and automation

D. Accuracy, sensitivity, rapidness, and expertise

E. Accuracy, sensitivity, outsourcing, and automation

Answers

Answer:

your answer would be E

Explanation:

I took that class

Pretty sure the answer is C

[Kr]5s24d25p1
Express your answer as a chemical symbol.

Answers

Answer:

kr(5)s24d25p1

=5d25kprs24

(80 points)
Requirements
You must include each of the following in your diagram, story/explanation:
1. precipitation
2. runoff
3. evaporation
4. condensation
5. transpiration
6. infiltration
7. groundwater
8. clouds
9. collection areas (example: ocean or lake)
Instructions
1. Complete either the diagram or written explanation – 10 points
• Diagram – you will draw the water cycle process. You must include each of the required items and label each. You are not required to color it, but it is encouraged to help differentiate between the processes.
• Written Explanation – for either of these options you need to include each of the processes. It may be beneficial to explain them in the order in which they occur but is not necessary.
2. Answer the questions


Questions
1. What process drives evaporation and transpiration? Explain how this process operates in the water cycle? (2 Points)


2. What role does gravity play in the water cycle? Hint: it is in more than 1 process (2 Points)


3. What states of matter will your find water in going through the water cycle? (1 Point)

Answers

Answer:

1.solar energy drives the cycle by evaporating water from its source and water moves from plants by the process of transpiration

2. in precipitation because the water falls from the sky

3.liquid and gas

what type of energy is a furnace and using a telephone? pls help

Answers

Answer:

hope this helped

Explanation:

Radiant energy is created through electromagnetic waves and was discovered in 1885 by Sir William Crookes. Fields in which this terminology is most often used are telecommunications, heating, radiometry, lighting, and in terms of energy created from the sun.

Answer:

radiation energy is created through electromagneic waves and was discovered in 1885 by Sir William Crookes

Explanation:

I have an unknown initial volume of gas
held at a temperature of 115 K in a
container with a pressure of 6 atm. I
increase the temperature to 225 K and
decrease the pressure to 2,800 mmHg
and it causes the final volume of the gas
to be 29 L. What was the initial
volume?

Answers

Answer:

V₁ = 0.025 Liters = 25 ml

Explanation:

P₁ = 6 Atm      P₂ = 7800mm/760mm/Atm = 0.01 Atm

V₁ = ?              V₂ = 29 Liters

T₁ = 115 K        T₂ = 225 K

P₁V₁/T₁ = P₂V₂/T₂ => V₁ = P₂V₂T₁/P₁T₂

V₁ = (0.01 Atm)(29L)(115K)/(6 Atm)(225K) = 0.025 Liters = 25ml

What is the speed of a wave with a wavelength of 3 m and a frequency of .1 Hz?

Answers

Answer:

wave velocity= frequency × wave length

=1×3

=3m/s

Explanation:

The distance covered by the wave in one second is equal to its wavelength, therefore,

wave velocity=wavelength/time period

OR wave velocity= frequency× wavelength

You can assume velocity as speed here.

hi, if your looking for extra points (50+) and brainiest here is ur chance, answer this question correctly plz

Answers

Its the warm air what helps them also of energy of the sun

it is B. storms with more energy cause more destruction

Which of these is not a Decomposer? *
A. Fungi
B. Bacteria
C. Flowers
D. Worms

Answers

i believe the answer to your question is C

(please give thanks if i am correct!!)

The answer please thank you

Answers

Answer:

B

Explanation:

Calculate the moles of electrons obtained from 250coulomb of electricity

Answers

Answer:

[tex]n=0.00259 mol[/tex]

Explanation:

Hello there!

In this case, since the Faraday's constant is 96500 Coulombs per mole, we can set up the following process to obtain the moles in 250 Coulombs:

[tex]n=\frac{250C}{96500C/mol}\\\\n=0.00259 mol[/tex]

Best regards!

Find a part of the article that describes signals that are sent within Diego’s body. Where does the signal come from, and how does it cause Diego to feel or react?

Answers

Answer:

The sensory receptors send signals to Diego's brain cells. These signals are messages that help Diego figure out what to do next. As Diego thinks, more signals move from one brain cell to another.

The sensory receptors send signals to Diego's brain cells. These signals are messages that help Diego figure out what to do next. As Diego thinks, more signals move from one brain cell to another.

What are sensory receptor?

The capacity to react to stimuli is one of the traits of a living thing. The highly developed sensory system of humans can concurrently analyze thousands of incoming messages.

Dendrites of sensory neurons are specialized for receiving particular types of stimuli and are known as sensory receptors. There are three ways to classify sensory receptors.

Exteroceptors are located at or close to the skin's surface and are responsive to stimuli coming from the outside or the body's surface. These receptors include those for vision, hearing, smell, and taste as well as those for touch, pain, and temperature.

Therefore, The sensory receptors send signals to Diego's brain cells. These signals are messages that help Diego figure out what to do next. As Diego thinks, more signals move from one brain cell to another.

To learn more about sensory receptors, refer to the link:

https://brainly.com/question/3190796

#SPJ2

Calculate the pH of each of the following aqueous solutions. (Enter your answers to two decimal places.) (a) 10.0 mL deionized water WebAssign will check your answer for the correct number of significant figures. 2.72 Incorrect: Your answer is incorrect. (b) 10.0 mL deionized water plus 5.0 mL of 0.10 M NaOH WebAssign will check your answer for the correct number of significant figures. (c) 10.0 mL deionized water plus 10.0 mL of 0.10 M NaOH WebAssign will check your answer for the correct number of significant figures. (d) 10.0 mL deionized water plus 15.0 mL of 0.10 M NaOH WebAssign will check your answer for the correct number of significant figures.

Answers

Answer:

a. pH = 7.0

b. pH = 12.52

c. pH = 12.70

d. pH = 12.78

Explanation:

a. Deionized water has the [H⁺] of pure water = 1x10⁻⁷ (Kw = 1x10⁻¹⁴ = [H⁺][OH⁻] - [H⁺] = [OH⁻ -)

pH = -log[H⁺] = 7

b. Moles NaOH = 5x10⁻³L * (0.10mol / L) = 5x10⁻⁴moles OH⁻ / 0.015L = 0.0333M = [OH⁻]

-Total volume = 10mL+5mL = 15mL = 0.015L

pOH = -log[OH⁻] = 1.48

pH = 14-pOH

pH = 12.52

c. Moles NaOH = 0.010L * (0.10mol / L) = 1x10⁻³moles OH⁻ / 0.020L = 0.0500M = [OH⁻]

-Total volume = 10mL+10mL = 20mL = 0.020L

pOH = -log[OH⁻] = 1.30

pH = 14-pOH

pH = 12.70

d. Moles NaOH = 0.015L * (0.10mol / L) = 1.5x10⁻³moles OH⁻ / 0.025L = 0.060M = [OH⁻]

-Total volume = 10mL+15mL = 25mL = 0.025L

pOH = -log[OH⁻] = 1.22

pH = 14-pOH

pH = 12.78

What is the molar mass of PbSO4?

Answers

Answer:

=303.2g

Explanation:

molar mass of Pb = 207.2g

atomic mass of S = 32g

atomic mass of O = 16g

Solution

            PbSO4

            = 207.2 + 32 + 4 (16)

              = 239.2 + 64

               = 303.2 g

The molar mass of  compound lead sulfate is  207.2 g.

Molar mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molar mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.

Molar masses of an element are given as relative atomic masses while that of compounds is the sum of relative atomic masses which are present in the compound.

atomic mass of S = 32g

atomic mass of O = 16g

PbSO₄= 207.2 + 32 + 4 (16)= 239.2 + 64  = 303.2 g.

Learn more about molar mass,here:

https://brainly.com/question/12127540

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The amount of freshwater on the earth is

Answers

3percent

is fresh

pls make me brainliest

plsssssss

#captainpower

97.5% being salt water and 2.5% being fresh water. Of the fresh water, only 0.3% is in liquid form on the surface.

Anybody Understand this question please help me !

Answers

Answer:

[tex]m_{Sn}=630.57gSn[/tex]

Explanation:

Hello!

In this case, according to the chemical reaction:

[tex]SnO_2+2H_2\rightarrow Sn+2H_2O[/tex]

We can evidence the 2:1 mole ratio between hydrogen and tin, thus, we perform the following stoichiometric setup to obtain the mass of produced tin:

[tex]m_{Sn}=21.46gH_2*\frac{1molH_2}{2.02gH_2}*\frac{1molSn}{2molH_2} *\frac{118.71gSn}{1molSn} \\\\m_{Sn}=630.57gSn[/tex]

Best regards!

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