Answer:
0.131mol
Explanation:
Firstly, we need to find the number of moles of chlorine gas (Cl2) by using the formula:
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas constant (0.0821 Latm/molK)
T = temperature (K)
Using PV = nRT
n of Chlorine = PV/RT
Based on the information provided in this question, V = 2.12 L, P = 2.27atm, T = 24°C = 24 + 273 = 297K
n = 2.27 × 2.12/ 0.0821 × 297
n = 4.8124/24.3837
n = 0.197
number of moles of Chlorine gas = 0.197mol
The balanced chemical equation provided in this question is as follows;
2 Al(s) + 3Cl2 (g) → 2AlCl3 (s)
3 moles of Cl2 produce 2 moles of AlCl3
0.197moles of Cl2 will produce;
0.197 × 2/3
= 0.394/3
= 0.131mol of AlCl3.
Define the unit of current. Name the device which is used to measure
electric current in a circuit. plzz helpp
Answer:
Explanation:
The Unit Of Current is defined as the flow of 1 coulomb of charge in one second . Its unit is Ampere.
An ammeter is a measuring device used to measure the electric current in a circuit. A voltmeter is connected in parallel with a device to measure its voltage, while an ammeter is connected in series with a device to measure its current.
How do particles move when a transverse wave passes through a medium?
A. In wavelengths and amplitudes
B. Up to a crest, then down through a trough, then back
C. Through a compression followed by a rarefaction
D. Along circular or elliptical paths
Answer: In a transverse wave, particles of the medium vibrate up and down perpendicular to the direction of the wave. ... In a surface wave, particles of the medium vibrate both up and down and back and forth, so they end up moving in a circle.
Explanation:
Hope this helps :)
7. A gas occupies 900.0 mL at a temperature of 27.0°C. What is the volume if the temperature
increases by 105 °C? *
Answer:
thats the ans.
https://socratic.org/questions/a-gas-occupies-900-0-ml-at-a-temperature-of-27-0-c-what-is-the-volume-at-132-0-c
Explanation:
It is the year 2032, and a new planet (Planet Y) is discovered. An astronaut with a mass of 79.00 kg visits the new planet. It is discovered that his weight on the new planet is 740.8 lbs. What is the estimate of the g force on the planet and would the astronaut be heavier on Planet Y or on Earth? (Earth has a g force of 9.81 m/s2 ).
Answer:
“Newton’s Law of Gravity” gives the gravity force between two objects with masses m
and M separated by distance r:
F G
m M
r
2
G is called the Gravitational Constant, and has the value
6.671011N m
2
kg2
(N is for
Newton, the physicists’ unit of force) or
1.51011 lbm
2
kg2
.
Let’s go back to the example given in the text: two 150 lb people separated by 1 meter.
The mass of each person is
150lb
2.2
lb
kg
68kg
. Putting these into the formula gives
F 1.5101 1 lb m
2
kg2
(68kg)
2
(1m)
2
107
lb.
Newton’s Law of Gravity actually gives the force only between two small objects. If one
of the objects is a sphere (such as the Earth) then it turns out that you can still use the
formula, but you must use the distance to the center of the sphere as the value for r. As
an example, let’s put in numbers for a 1 kg object sitting on the surface of the Earth.
Then the force of attraction is given by the gravity equation with m = 1 kg, M = the mass
of the Earth =
24 610
kg, and r = radius of the Earth (that’s the distance to the center of
the sphere). This distance is r = 6371 km ≈
6
610
meters. Without plugging in the
numbers, can you guess what the answer will turn out to be? Guess, and then check this
footnote2
to see if you guessed correctly.
Suppose you weigh 150 lbs on the Earth. Then your mass is
150lb
2.2
lb
kg
68kg
. What will
you weigh on the Moon? We can calculate that by using Newton’s Law of Gravity, and
putting in the M = the mass of the Moon =
22 7.310
kg, r = the radius of the moon =
6
1.710
meters. The answer is F = 25 lb. That means you will weigh 25 lb. on the
surface of the Moon.
Explanation:
hope this helps :)
(Answer ASAP)
In which state(s) of matter could a substance have thermal energy?
A) Only liquids and gases
B) Only liquids and solids
C) Only liquids
D) Liquids, solids, and gases
which of the following statements explains why fossil fuels are nonrenewable resources
Answer:
the first one
Explanation:
i am the frame word that supports cell
Answer:
blood?
Explanation:
because you need it and makes your body works
An illustration of a fire and a pair of hands near the fire.
He concluded that the image shows thermal energy being transferred from the flames to the person’s hands through conduction.
Which best explains Alex’s error?
Thermal energy is being transferred from the person’s hands to the flames.
The image does not show thermal energy being transferred because the molecules of two substances or objects are not in direct contact.
The image does not show conduction because the molecules of two substances or objects are not in direct contact.
Thermal energy is being transferred from the surrounding air to the flames.
Answer:
b
Explanation:
What volume will 1,27 moles of helium gas occupy at 63°C and 75.2 kPa?
Answer:
47.34L
Explanation:
Using the general gas equation as follows:
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (K)
According to the information provided in this question,
V = ?
P = 75.2 kPa = 75.2 × 0.00987 = 0.74atm
T = 63°C = 63 + 273 = 336K
n = 1.27mol
Using PV = nRT
V = nRT/P
V = 1.27 × 0.0821 × 336 ÷ 0.74
V = 35.034 ÷ 0.74
V = 47.34L
In a coffee-cup calorimeter, 100.0 g of H2O and 8.70 grams of Na3PO4 are added. The water had an initial temperature of 24.6 oC. After the dissolution of the sodium phosphate the temperature changed to 31.3 oC.
-Was the dissolution exothermic or endothermic? Explain.
-Calculate how much heat the water lost or gained.
Answer:
a.) exothermic
b.) 2,800.6 J
Explanation:
116
Sn
50
Write the complete nuclear equation for alpha absorption
Identify at least three control variables that could be used with this investigation: What temperature allows for bacterial growth to occur quickly?
Answer:
Time allowed for incubation, size of the dish, the amount of light, amount of agar, the type of agar…etc
Explanation:
We define a control variable as any variable that has to be held constant during a study.
If i wish to study what temperature allows for bacterial growth to occur quickly, i will have to subject different bacterial cultures to different temperatures.
The variables that must remain the same across all these cultures at different temperatures is what we call the control variables. They ensure that the results of the study are reliable.
Such variables include but are not limited to;
Time of incubationSize of the dishAmount of lighthttps://brainly.com/question/17606920
For the following Bronsted acid-base reaction, complete the reaction, identify the acid, base, conjugate
acid and conjugate base. HF + PO4^-3
Answer:
algun moderador puede acabar a este otro este me borró respuesta que no debió borrar
Version: TAKEHOME
1) The ionic compound below is soluble in water. Complete the following:
-Draw the interaction of the ionic compound and water in the proper orientation. 3pts
-On the line below discuss the strength of the interaction within the compound compared to the strength of interaction
between the compound and water.
Answer:
The hydrogens of the water molecules around the bromide ion will need to be faced toward it, whereas the oxygens of the water molecules around the potassium ion will need to be faced toward it.
The strength of the interaction within the compound will supersede that of the interaction between the compound and water.
Explanation:
To answer this question, you need to be aware of the structure of a water molecule and its components. A water molecule has the chemical formula of H2O, and oxygen is inherently electronegative, meaning that it attracts electrons very strongly. As a result, when it is in H2O, it pulls the valence electrons of the H atoms very strongly, which results in the H atoms being partially positively charged and the O atom being partially negatively charged. Therefore, the O atom is going to be attracted to the potassium ion, whereas the H atom is going to be attracted to the bromide ion.
The answer to the second part of the question is as written above because ionic bonds are stronger than ion-dipole bonds; that's just the way it is.
Please answer ASAP,
Why does the earth experience high tides?
High tides occur because Jupiter is in alignment with Saturn
The gravitational force of the moon attracts the water and solid earth, pulling them closer to the moon
The gravitational pull of the moon causes areas of water that bulge away from the earth.
High tides occur because the comet Neowise passed by Earth
Answer:
B
Explanation:
I took the test and GOT an A
solve the following equation:13x - 22 = 30
Answer:
52/13
Explanation:
13X=30+22
x=52/13
Read the chemical equation.
Mg + HCI - MgCl2 + H2
How many liters of hydrogen gas is produced at 298 K and 0.940 atm if 4.00 moles of hydrochloric acid react with an excess of magnesium metal?
O 26.0 liters
O 52.1 liters
82.3 liters
104 liters
Answer:
74.04 liters of hydrogen gas are produced.
Explanation: According to reaction, 2 mol of HCl gas gives 1 mole of hydrogen gas, then 6 moles of HCl gas will give: moles of hydrogen gas that is 3 moles.
The pressure of the hydrogen gas at 298 K = 0.990 atm
The volume occupied by the hydrogen gas = V
Number of hydrogen has moles = 3 moles
PV=nRT
V = 74.04 L
74.04 liters of hydrogen gas are produced.
Answer:
38.2 liters Is the answer
Explanation:
Ethan is observing chemical and physical properties of a substance. He heats a
substance and observes that the substance turns from a brown solid to a black
powder. He refers to several chemistry journals that claim this represents a chemical
reaction. From his observation and research, he concludes that the substance goes
through a chemical change when heated. How can Ethan best defend his conclusion?
A. by demonstrating that the substance will eventually melt if the temperature
continues to increase
B. by verifying that the substance is now made up of different molecules than
before it was heated
C. by verifying that the substance is made up of only one type of element
D. by demonstrating that the substance is less dense after it is heated
Answer:
the answer is b beacuse the substance changed
Can someone plz help me with this one problem plz!!!!
Answer:
very top one is sunlight. 2nd top one is oxygen. 3rd top one is carbon dioxide. last one is water
A substance with two or more different types of atoms chemically bonded together is called....
a. an element
b. an atom
c. a mixture
d. a compound
Answer:
D
Explanation:
What is the chemical formula (including charge) for the chromate ion?
Answer:
Chromate Chemical Formula
Explanation:
The formula of chromate is CrO42-. The chromate ion usually consists of one chromium atom (+6 oxidation state) and four oxide atoms. The overall charge is -2.
Aptitude Test Formulas: Right Angle Formula
Complex Number Power Formula: Structural F...
Heat Of Solution Formula: Integers Formula
Volume Of Parallelepiped: Prime Number For...
How many formula units are there in 20.6 moles of Al(NO3)3?
Answer:
How many moles Al(NO3)3 in 1 grams? The answer is 0.0046949186022713.
We assume you are converting between moles Al(NO3)3 and gram.
You can view more details on each measurement unit:
molecular weight of Al(NO3)3 or grams
This compound is also known as Aluminium Nitrate.
The SI base unit for amount of substance is the mole.
1 mole is equal to 1 moles Al(NO3)3, or 212.996238 grams.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between moles Al(NO3)3 and gram.
Type in your own numbers in the form to convert the units!
Explanation:
CO(g) + O2(g) CO2(g)
Consider the unbalanced equation above. What is the maximum mass of carbon dioxide that can be formed when 1.45 g of CO and 2.00 g O2 react?
4.2 L of a gas has a pressure of 560mmHg at 72⁰F. What is the temperature at760mmHg if the volume is still 4.2 L? (5 pts)
Answer:
The temperature at 760mmHg if the volume is still 4.2 L is 400.862 K
Explanation:
Gay Lussac's law indicates that when there is a constant volume, as the temperature increases, the pressure of the gas increases. And when the temperature is decreased, the pressure of the gas decreases. This law can be expressed mathematically as follows:
[tex]\frac{P}{T} =k[/tex]
Having an initial state 1 and a final state 2, the following is true:
[tex]\frac{P1}{T1} =\frac{P2}{T2}[/tex]
In this case:
P1= 560 mmHgT1= 72 F= 295.372 K (being 32 F= 273.15 K)P2= 760 mmHgT2= ?Replacing:
[tex]\frac{560 mmHg}{295.372 K} =\frac{760 mmHg}{T2}[/tex]
Solving:
[tex]T2= 760 mmHg*\frac{295.372 K}{560 mmHg}[/tex]
T2= 400.862 K
¿por que la bebida es una solución quimica? Explica. ¿cuales son sus componentes? ¿que tipo de solucion es?
Answer:
La respuesta está en el enunciado
Explanation:
Una solución química es definida como una mezcla de dos o más sustancias donde, la que está en mayor proporción, es definida como el solvente y los componentes que están en menor cantidad se definen como los solutos.
En general, en la formulación de bebidas, el solvente es agua, los solutos son otros componentes como saborizantes y colorantes que permiten que el consumidor tenga experiencias agradables con la bebida.
Además, la solución debe ser homogenea, esto es, todos los solutos se encuentran completamente disueltos en el solvente. Una bebida comercial a la que se le encuentren partículas no genera confianza y puede ser rechazada por parte del consumidos.
Sam did an experiment. He boiled water in a teapot and saw vapor coming out. When he placed a cold plate in contact with the vapor it formed droplets of water.? Can you imagine what was that process and Why did he observe this?
Answer:
evaporation and condesation
Explanation:
because he was curiuos
Find the H+ concentration of of a solution that has a pH solution of 12.24
Answer:
[H⁺] = 5.754 x 10^-13 M
Explanation:
Since pH is the negative log of the hydronium concentration, we can solve for hydronium concentration and then plug in our given pH:
pH = -log[H⁺]
-pH = log[H⁺]
10^-pH = [H⁺]
Let's plug in our pH:
[H⁺] = 10^-pH = 10^-12.24 = 5.754 x 10^-13 M
6 spills and 100 squares
If each spill represents one year, what is the half-life of the square?
Answer:
hi
Explanation:
The unit for work is the _______ which is also called the ____________.
What is the Law of the Conservation of Mass
Answer: law of conservation of matter states that mass in an isolated system can neither be created nor destroyed by chemical reactions or physical transformation.
thus, the mass of the reactants in a reaction must be equal to the mass of the products