Answer:
The answer is "5 moles".
Explanation:
Please find the complete question in the attached file.
[tex]\to 3.01 \times (10^{22}) = 0.0499822251 \approx 0.05 \ moles[/tex]
A closed flask contains gas at STP. If the temperature is raised to 400 K what will the pressure be in atm?
Answer:
The answer is 1.5 atm
Explanation:
Will mark brainly
ASAP
Answer:
A. Shivering
Explanation:
This is the job of the excretory system. You remove waste as a gas (carbon dioxide), as a liquid (urine and sweat), and as a solid. Excretion is the process of removing wastes and excess water from the body. Recall that carbon dioxide travels through the blood and is transferred to the lungs where it is exhaled.
How many molecules of calcium chloride are in 3CaCl2
What is the molality of a solution of 0.25 moles of sucrose in dissolved in enough water to make 4.00 liters of water?
The number of grams of sulfur in 223 grams of sodium sulfate is . . . Grams And explain how, I still dont get it fully
Answer:
50.25 g of sulphur, S.
Explanation:
Mass of Na₂SO₄ = 223 g
Mass of sulphur =?
Next we shall determine the molar mass of Na₂SO₄. This can be obtained as follow:
Molar mass of Na₂SO₄ = (23×2) + 32 + (16×4)
= 46 + 32 +64
= 142 g/mol
Mass of S in 142 g of Na₂SO₄ = 32 g
Finally, we shall determine the mass of S in 223 g of Na₂SO₄. This can be obtained as follow:
142 g of Na₂SO₄ contains 32 g of S.
Therefore, 223 g of Na₂SO₄ will contain = (223 × 32) / 142 = 50.25 g of S.
Thus, 223 g of sodium sulfate, Na₂SO₄ contains 50.25 g of sulphur, S.
What is the mass of a 5.00 cm^3 piece of copper having a density of 8.96 g/cm^3
Answer:
44.8 g
Explanation:
Density = mass / Volume
Mass = density x Volume = 8.96x 5 = 44.8 g
How many moles of Iron (II) oxide are present in a 34.5 gram sample?
Answer:
0.609 Is the answer.
Explanation:
I hope this helped
The reaction Ni(s) + S(s) --> NIS(s) is an example of which type of reaction?
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help plz 8th grade science
Answer:
B
Explanation:
Brainlest is apprciatedddddddddddd
A sample of helium gas has a volume of 620. Ml at a temp of 500 K. If we decrease the temperature to 100K while keeping the pressure constant what will the new volume be?
Answer:
A sample of helium gas has a volume of 620mL at a temperature of 500 K. If we ... to 100 K while keeping the pressure constant, what will the new volume be?
Explanation:
A sample of helium gas has a volume of 620. Ml at a temp of 500 K. If we decrease the temperature to 100K while keeping the pressure constant 124 ml will the new volume be.
What is volume ?Volume is a measurement of three-dimensional space that is occupied. It is frequently expressed quantitatively using SI-derived units, as well as several imperial or US-standard units. Volume and the notion of length are connected.
The capacity of an object is measured by its volume. For instance, a cup's capacity is stated to be 100 ml if it can hold 100 ml of water in its brim. The quantity of space occupied by a three-dimensional object can also be used to describe volume.
According to Charles' Law, at constant pressure,
V1 / T1 = V2 / T2
V1 = 620 ml and T1 = 500K, V2 = ? , T2 = 100K
620 ml / 500K = V2 / 100K
V2 = ( 620 ml ) ( 100K ) / 500K
Volume = 124 ml
Thus, If we decrease the temperature to 100K while keeping the pressure constant 124 ml will the new volume be.
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can someone let me know if i did this right ?
the structure of cyclopentane-1,2-diol
Answer: five carbon atoms forms a ring. In adjacent two carbon atoms
An hydroxyl group (-OH) is attached. Molecular formula is
C5H8(OH)2
Explanation:
What makes scientists think that arctic areas were once warm?
they found wooly mammoths there
O they found fossils of horses there
they found fossils of coral there
O the different layers of snow and ice
Answer:well the ice preserves the wooly mammoths
Explanation:its not just snow its bacteria witch means that once living to frozen thats how they know how it looks like and to see what animal its related to now day it related to the elephants
A container of nitrogen gashas a pressure of 256.4mm Hg at 362K. If the temperature is decreased to 251K, what is the pressure of the gas in the container?Circle the Correct Answer: (106mmHg or 178mmHg)
PLEASE HELP ME ON THIS QUESTION ASAP!!!!
Answer:
To support the body, protect the organs, produce blood cells, and store calcium.
What is the mass of 3.25 moles of sodium hydroxide (NaOH)?
Answer:
1 mole is equal to 1 moles NaOH, or 39.99711 grams.
Explanation:
Hope this helps have a nice day :)
The statement of the mass of sodium hydroxide (NaOH) is "130 g."
What is mass?A substance is something to do with mass that takes up space. The mass of a compound is the total amount of atoms present in grams that make up a molecule. The grams is the unit of mass.
In order to determine the mass in grams, multiply moles of the substance value by its molar mass to convert moles into grams.
Mole to gram conversion factor,
[tex]=\;given \;mole\;.\;\frac{grams}{1\;mol}[/tex]
Mass of NaOH comes out to be,
[tex]=\;3.25\;mol\;.\;\frac{39.997\;g}{1\;mol}[/tex]
= 129.99 g
= 130 g
Hence the correct answer is 130 g.
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Newton's Third Law of Motion: "For every action there is an equal and opposite reaction." What is a force pair? Are they easy to identify?
Answer:
A force pair is a couple of forces which are acting on any given body from opposite directions called action-reaction forces.
One can simply identify the force pair by identifying two objects which are interacting and by describing who is pushing whom and by identification of their drawing.
A book resting on table has two participants, a book applying force downwards due to gravity and the table pushing it away from the earth surface. These are action and reaction forces.
How many grams of chlorine gas can be produced from the decomposition of 1.46x1023 formula units of AuCl3?
2 AuCl3 2 Au + 3 Cl2
Group of answer choices
A.33.6 g
B.25.8 g
C.195 g
D.11.4 g
Answer:
c
Explanation:
NO FAKE ANSWERS WILL GIVE BRAINLIEST
One mole of copper has a mass of 63.5 grams. Approximately how many atoms of copper are present in one mole of copper?
63 atoms
64 atoms
32 × 1023 atoms
6 × 1023 atoms
Answer:
6 × 10^23 atoms
Explanation:
This is because Avogadro's number aka 6.02 x 10^23 is applicable to every element and is the number of atoms in any 1 mole of an element. The answer 6 x 10^23 is closest to 6.02 x 10^23 because the 6.02 was rounded to just 6. Hope this helps :)
Answer:
The answer is D)
Explanation:
6 X 10^23
What is the name of FeO4
Answer:
Ferrate (VI)
Explanation:
A compound consists of 14.6% carbon and 85.4% chlorine by mass. What is its empirical formula?
Answer:
[tex]CCl_{2}[/tex]
Explanation:
When calculating an empirical formula from percentages, assume you have a 100g sample. This allows you to convert the percentages directly to grams, because X % of 100g is X grams.
So:
14.6% C = 14.6g C, 85.4%Cl = 85.4g Cl
The next step is to divide each mass by their molar mass to convert your grams to moles.
14.6g/12.01 = 1.22 mol
85.4g/35.45= 2.41 mol
Then you will divide all of your mol values by the SMALLEST number of moles. This gives you whole numbers that are the mole ratio (subscripts) of the empirical formula.
1.22 mol/1.22 mol = 1
2.41 mol/1.22 mol = 2
So the empirical formula is
[tex]CCl_{2}[/tex]
The empirical formula of the compound is CCl2.
HOW IS EMPIRICAL FORMULA CALCULATED:
Empirical formula of a compound is the smallest ratio of elements contained in that compound. The steps for calculating the empirical formula are as follows:14.6% carbon and 85.4% chlorine by mass means the compound has 14.6g of C and 85.4g of ClFirst, we divide each mass by their respective molar mass:C = 14.6g ÷ 12g/mol = 1.22mol
Cl = 85.4g ÷ 35.5g/mol = 2.41mol
Next, we divide each mole value by the smallest value:C = 1.22mol ÷ 1.22 = 1
Cl = 2.41mol ÷ 1.22 = 1.97
Approximately, the carbon to chlorine ratio is 1:2, hence, the empirical formula of the compound is CCl2.
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during a chemical reaction, a substances composition changes. What does composition relate to in this context
Answer:
Composition can be referred to as it's build.
Explanation:
An example is when wood is burned, its structure is no longer compact. It is now ash.
On a coordinate plane, which single transformation could map point A (3,-4) onto point A' (1.5,-2)? *
Answer: A dilation with rule: [tex](x,y)\to(\dfrac12x,\dfrac12y)[/tex]
Explanation:
A dilation is a non-rigid transformation that creates an image that is the same shape as the original but has a different size.
It uses a scale factor k such that
[tex](x,y)\to(kx,ky)[/tex]
(x,y)= coordinates of original figure
(kx,ky) = corresponding coordinate in the image.
To transform: A (3,-4) onto point A' (1.5,-2).
Using scale factor k= [tex]\dfrac12[/tex], we have
[tex]A(3,-4)\to A'(\dfrac12\times3, \dfrac12\times-4)=A'(1.5,-2)[/tex]
Required rule: [tex](x,y)\to(\dfrac12x,\dfrac12y)[/tex]
Why does a feather fall slower than a rubber ball? How could you make them hit
the ground at the same time?
Answer:
Galileo discovered that objects that are more dense, or have more mass, fall at a faster rate than less dense objects, due to this air resistance. A feather and a rubber ball dropped together. Air resistance causes the feather to fall more slowly, while the ball falls more fast.
What is the molar mass of Zn(NO3)2 ?
Answer:
molar mass of zn( no3) 2
is 189.36 g/ mol
When we put elements on the periodic table we use the______
mass.
Answer:
They are placed on the periodic table based on their atomic number.
Explanation:
In the chemistry table, you can find the molecular mass and atomic number. Atomic number represents the number of the protons of an atom, and molecular mass represents the mass of the atom. The mass of an atom is made from proton and neutron. The element is made by arranging it based on the number of protons, which was the atomic number.
Answer:
When we put elements on the periodic table we use the atomic mass
Please help me due tomorrow
Explanation:
this are answers
Given the balanced equation representing a reaction:
2NO + 0, → 2NO, + energy
The mole ratio of NO to NO2 is
A)
1 to 1
B)
2 to 1
C)
3 to 2
D)
5 to 2
Hey I'm Chloe Can you Help me Thanks.
Name 5 different foods with carbohydrates.
Na2SO4(aq) + CaCl2(aq) --> CaSO4(s) +
2NaCl(aq) is an example of which type of
reaction?
decomposition
synthesis
single replacement
double replacement
Answer:
double replacement
Explanation: