Answer:
[tex]P_N=0.987atm[/tex]
Explanation:
Hello there!
In this case, for these problems about collecting a gas over water, we must keep in mind that once the gas has been collected, the total pressure of the system is given by the atmospheric pressure, in this case 1.01 atm. Next, since we also have water in the mixture, we can write the following equation:
[tex]P_T=P_w+P_N[/tex]
Thus, by solving for the pressure of nitrogen and using consistent units, we obtain:
[tex]1.01atm=17.5torr*\frac{1atm}{760torr} +P_N\\\\P_N=1.01atm-0.023atm\\\\P_N=0.987atm[/tex]
Shoals are raised landforms made of sand and gravel that are commonly found in Florida. They are often called sandbars and are located in and around bodies of water such as oceans, rivers, and lakes. Which factor most commonly causes shoals to form or change shape?
Heavy rain fall most commonly causes shoals to form or change shape making depressions and bars in the sand.
What causes a shoal ?Wave shoaling occurs when surface waves slow down, their wave height rises, and the space between waves narrows as they approach shallow water, like a beach. The waves are said to shoal because of this action, which is known as shoaling.
The shoal, a buildup of silt that might be hazardous to ships in a river channel or on a continental shelf.
Conventionally, it is assumed that the continental shelf is less than 10 metres below sea level at low tide. Shoals are created mostly by the same processes that result in offshore bars.
Thus, Heavy rain fall causes shoals to produce and change shape creating depressions and bars in the sand.
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1
An atom with 17 protons, 17 electrons and 18 neutrons has a mass number
of
Answer:
35
Explanation:
mass number = protons in the nucleus + neutrons in the nucleus
17 + 18 = 35, the mass number
Protons and neutrons are together known as nucleons.
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what compound is YCI3
Answer:
Yttrium, Carbon, Iodine
Explanation:
Y stands for Yttrium
C stands for Carbon
I stands for Iodine
and 3 stands for 3 Iodine atoms
Is this molecule a polar or non polar?
Answer:
This is polar
Explanation:
If the arrows are of different lengths, and if they do not balance each other, the molecule is polar.
If the arrangement is asymmetrical, the molecule is polar.
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Describe the structure of cellulose molecules
Answer:
Cellulose is a made up of thousands of D-glucose subunits. The glucose subunits in cellulose are linked via beta 1-4 glycosidic bonds.
when discussing Solutions the amount of solute dissolved in the solvent is important to know as it will affect the colligative properties of a solution a pure illusion prepared by dissolving the maximum amount of solute in a given amount of solvent is best described as
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help please!!! no links
what is energy?
(in your own words but keep it short)
Answer:
The capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, etc.
How many moles of NaCl are present in .05 L of 2.3 M NaCl solution?
Answer:
n = 1.15 mol
Explanation:
C = n/ V
n= C×V
n= 2.3× 0.5
n = 1.15 mol
Helpppp plzzz (will mark brainlest)
Answer:
hydrogen and cloride + hydrogen
Elements in Group I of the Periodic Table react with water.
Which row describes the products made in the reaction and the trend in reactivity of the elements?
Answer:
B
Explanation:
How does the kinetic theory of gases explain the weather changes happening in the troposphere? You can also research on the internet using keywords such as troposphere, atmosphere layers, and weather changes.
Answer: According to Kinetic Molecular Theory, an increase in temperature will increase the average kinetic energy of the molecules. As the particles move faster, they will likely hit the edge of the container more often.
Answer:According to Kinetic Molecular Theory, an increase in temperature will increase the average kinetic energy of the molecules. As the particles move faster, they will likely hit the edge of the container more often.
Explanation:
A toy car rolls 8 meters in 2 seconds. What is the average speed of the toy car?
16 m/s
10 m/s
4 m/s
6 m/s
why should a sports person or a rickshaw puller in take more corbohydrate rich food in their diet
Answer:
Because carbohydrates are energy
Explanation:
Carbohydrates is best best nutrient for energy, turning into energy as soon as they are eaten. A rickshaw puller most likely needs quite a bit of energy to pedal all day without getting tired, so that's why they eat a carbohydrate rich diet.
Pedro adds 3.23 moles of helium to a balloon that already contained 4.51 moles of helium creating a balloon with a volume of 9.87 liters. What was the volume of the balloon before the addition of the extra gas?
Answer:
7.The answer is 2.13 because if u add 3.23 and 4.51 and the answer is 7.74 and u add 2.13 to get 9.87. 3.23 + 4.51 + 2.13 is 9.87
Explanation:
The vat is made of metal. Why would it matter that the material from which the vat is made is metal ?
Answer:
Due its storing and holding ability.
Explanation:
It matter that the material from which the vat is made is metal because this vat is used for storing and holding liquids. Vat is a large container or tank that is used for storing or holding liquids in industrial sector. This vat is made of metal which increases its strength and durability. If the vat is made of wood or plastic so it can't hold huge amount of liquid or chemical due to its weak material so that's why it matters that the substance from which the vat is made is metal or not.
Which equation is derived from the combined gas law?
Answer:
First one. V1/T1=V2/T2
If the pressure is the same.
Explanation:
Answer:
A on edge2021
Mechanical energy is the sum of two types of energy—kinetic energy and potential energy. Which of the following is an example of an object that has kinetic energy?
Answer:
There is no picture but the one that is in motion in the picture has kinetic energy.
Explanation:
Kinetic energy is the energy of motion.
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Which countries have a Desert biome?
Mexico
China
Ireland
India
Brazil
Saudi Arabia
United States
"Desert biome?" that's a funny way to put it. Well, the answer is most likely Mexico, United Stated, and Saudi arabia,
Mexico, Saudi Arabia and United States are countries which have a desert biome.
What is a Desert?
This is a barren area of landscape which is characterized by little precipitation and isn't best suited for plant or animal life.
Mexico, Saudi Arabia and United States all have the presence of desert biomes in some of its states.
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3 If methane burns in a poor supply of air it will give carbon monoxide and water instead. See if you can write a balanced equation to show this.
Answer: CH4 + 1,5 O2 ⇒ CO + 2 H2O, then multiply numbers by 2
Explanation:
How many moles are 4.20 x 1025 atoms of Ca?
Answer:
4305
Explanation:
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Describe how crude oil is separated into fractions by fractional distillation.
Answer:
Crude oil is separated by fractional distillation. Crude oil is heated to vaporize the different hydrocarbons in a tank which is cool at the top and hot at the bottom. The vapours then rise and the different hydrocarbons condense at their specific boiling points, allowing them to be separated.
Question 1 0 Which of the following numerical expressions gives the number of moles in 5.0 g of CaO?
A) 5.0 g X 56 g/mol
B) 5.0 g / 56 g/mol
C) 56 g/mol / 5.0 g
D) 1/5.0 g X 1/56 g/mol
Answer: A
Explanation:
5.0 g / 56 g/mol is the numerical expression that gives the number of moles in 5.0 g of CaO.
HOW TO FIND NUMBER OF MOLES:
The number of moles in a substance can be calculated by dividing the mass of that substance in grams by its molar mass in grams/moles. Number of moles = mass ÷ molar massIn this question, 5.0g of calcium oxide (CaO) was given. The molar mass of CaO is as follows:CaO = 40g/mol + 16g/mol = 56g/mol
Number of moles = 5.0g ÷ 56g/mol
Therefore, 5.0 g / 56 g/mol is the numerical expression that gives the number of moles in 5.0 g of CaO.
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Cu + 2 AgNO3 Cu(NO3)2 + 2 Ag
How many grams of silver nitrate can be formed from 29 grams of silver?
Answer:
the answer is "a" took the test
Explanation:
A substance conducts electricity because of free moving, charged particles.
what are the free moving charged particles in a :
carbon electrode(made of graphite)
molten mixture of aluminum oxide and cryolite
metal wire?
Answer:
carbon electrode: delocalised electrons
molten mixture....: aluminium oxide ions
metal wire: Metal atoms
The free moving charged particles in the following substances are as follows;
carbon electrode(made of graphite); Delocalized electrons.molten mixture of aluminum oxide and cryolite;. Aluminium ions in Aluminium oxide.Metal wire; Metal ionsGraphite, an allotrope of carbon has Delocalized (free-moving) electrons and these electrons serve to enable conductivity.
Although, cryolite is a bad conductor of electricity, when Molten Aluminium oxide and cryolite is used, the free moving Aluminium ions enable conductivity.
In metal wires, conductivity is solely the responsibility of metal ions.
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butanoic acid + 1-pentanol
catalyst
→ water +X
Given the equation:
To which class of organic compounds does product X belong?
1. alcohol
2. Ester
3. Ether
4. 4. alkane
Answer: X is an Esther
Explanation: alcohol and carboxylate acid forms esters
When a carboxylic acid and alcohol react then-new substance is produced from esterification and hence is called an ester. Thus, option 2 is correct.
What is esterification?Esterification is the process to make esters from carboxylic acids and alcohol in the presence of an acid catalyst (dry sulphuric acid). The -COOH group of the carboxylic acids contributes to the formation of the esters.
The esterification reactions are reversible reactions and occur at a slower pace. The reaction between an acid and alcohol is shown as:
Butanoic acid + 1-pentanol (catalyst) → water + ester
Therefore, option 2. ester is produced.
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What is the oxidation state of N in NH4?
A. -3
B. +5
C. +1
D. -5
Gas Giant Planets Rocky Small Solar System Star Sun
The ____1_____ and the ____2____ form the ____3____. The sun is an enormous ____4____. The planets move around the sun. Mercury, Venus, Earth, and Mars are the four ____5____, ____6____ planets. Jupiter, Saturn, Uranus, and Neptune are the four ____7____, ____8____ planets
How many joules are required to heat 15 grams of ice from -200⁰ to 1400⁰ C?
Answer: A heat energy of 50160 joules are required to heat 15 grams of ice from [tex]-200^{o}C[/tex] to [tex]1400^{o}C[/tex].
Explanation:
Given : mass of ice = 15 g
Convert grams into kg as follows,
[tex]1 g = 0.001 kg\\15 g = 15 g \times \frac{0.001 kg}{1 g}\\= 0.015 kg[/tex]
Initial temperature = [tex]-200^{o}C[/tex]
Final temperature = [tex]1400^{o}C[/tex]
Formula used to calculate the amount of heat energy is as follows.
[tex]q = m \times C \times (T_{2} - T_{1})[/tex]
where,
q = heat energy
m = mass of substance
C = specific heat of substance (ice here has C = [tex]2090 J/kg ^{o}C[/tex])
[tex]T_{1}[/tex] = initial temperature
[tex]T_{2}[/tex] = final temperature
Substitute the values into above formula as follows.
[tex]q = m \times C \times (T_{2} - T_{1})\\= 0.015 kg \times 2090 J/kg^{o}C \times [1400 - (-200)]^{o}C\\= 50160 J[/tex]
Thus, we can conclude that 50160 joules are required to heat 15 grams of ice from [tex]-200^{o}C[/tex] to [tex]1400^{o}C[/tex].
A 0.45g sample of mineral ore is analyzed for chromium and found to contain 0.560mg Cr2O3. Express the concentration of Cr2O3 in the sample as a.Percent b) parts per thousand (pot) c) parts per million (ppm) d) parts per billion (ppb)