Answer:
20009 is answer is right 1345678899444
Explanation:
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gvhjk ghkde ghjcddxxb hhj hhgddxb ggjbcxdss ggbbsrtyg fy gbsdgh
a 2.7 L of N2 is collected at 121kpa and 288 K . if the pressure increases to 202 kpa and the temperature rises to 303 K , what volume will the gas occupy?
Answer:
The gas will occupy a volume of 1.702 liters.
Explanation:
Let suppose that the gas behaves ideally. The equation of state for ideal gas is:
[tex]P\cdot V = n\cdot R_{u}\cdot T[/tex] (1)
Where:
[tex]P[/tex] - Pressure, measured in kilopascals.
[tex]V[/tex] - Volume, measured in liters.
[tex]n[/tex] - Molar quantity, measured in moles.
[tex]T[/tex] - Temperature, measured in Kelvin.
[tex]R_{u}[/tex] - Ideal gas constant, measured in kilopascal-liters per mole-Kelvin.
We can simplify the equation by constructing the following relationship:
[tex]\frac{P_{1}\cdot V_{1}}{T_{1}} = \frac{P_{2}\cdot V_{2}}{T_{2}}[/tex] (2)
Where:
[tex]P_{1}[/tex], [tex]P_{2}[/tex] - Initial and final pressure, measured in kilopascals.
[tex]V_{1}[/tex], [tex]V_{2}[/tex] - Initial and final volume, measured in liters.
[tex]T_{1}[/tex], [tex]T_{2}[/tex] - Initial and final temperature, measured in Kelvin.
If we know that [tex]P_{1} = 121\,kPa[/tex], [tex]P_{2} = 202\,kPa[/tex], [tex]V_{1} = 2.7\,L[/tex], [tex]T_{1} = 288\,K[/tex] and [tex]T_{2} = 303\,K[/tex], the final volume of the gas is:
[tex]V_{2} = \left(\frac{T_{2}}{T_{1}} \right)\cdot \left(\frac{P_{1}}{P_{2}} \right)\cdot V_{1}[/tex]
[tex]V_{2} = 1.702\,L[/tex]
The gas will occupy a volume of 1.702 liters.
is photosynthesis part of chemical change?If yes can I have photosynthesis in chemical equation as chemical symbols
Answer:
yes it is a chemical change
i have made it in above picture
To investigate the effect of salt water on a cell, a researcher places one cell sample in freshwater and a second cell sample in salt water. After six hours, the researcher observes and sketches the two cells as shown. What change in the cells occurred during the six hours the cells remained undisturbed? A.Osmosis occurred in the salt water cell sample because the water from inside the cell moved out of the cell to a lower concentration, causing the cell to shrink. B.Osmosis occurred in the freshwater cell sample because the water from outside the cell moved into the cell to a higher concentration, causing the cell to grow. C.Osmosis occurred in the salt water cell sample because the salt from outside the cell moved into the cell to a lower concentration, causing the cell to shrink. D.Osmosis occurred in the freshwater cell sample because the salt from inside the cell moved out of the cell to a higher concentration, causing the cell to grow.
Answer:
MARK ME BRAINLIEST
Explanation:
MARK ME BRAINLIEST
Please help not to fail chemistry
Answer:
I think the heat on the surface or the fire under the dish cost evaporation coz when the water got heat tge water evaporate or go to the upper part of dish and cool down then back to the bottom.
Explanation:
Plss correct me if im wrong
what is the mass in grams of 1.204x10^24 molecules of hydrogen gas (H2) ?
Answer:
4.03 g
Explanation:
The mass in grams of the hydrogen gas is 4.0 g
StoichiometryFrom the question,
We are to determine the mass in grams of the hydrogen gas.
First, we will determine the number of moles of hydrogen gas present.
Using the formula,
[tex]Number\ of\ moles =\frac{Number\ of \ molecules}{Avogadro's\ constant}[/tex]
From the given information,
Number of hydrogen molecules = 1.204 × 10²⁴ molecules
Thus,
Number of moles of hydrogen gas present = [tex]\frac{1.204 \times 10^{24} }{6.02 \times 10^{23} }[/tex]
Number of moles of hydrogen gas present = 2 moles
Now, for the mass of the hydrogen gas
Using the formula,
Mass = Number of moles × Molar mass
Molar mass of hydrogen gas = 2.016 g/mol
Then,
Mass of the hydrogen gas = 2 × 2.016
Mass of the hydrogen gas = 4.032 g
Mass of the hydrogen gas ≅ 4.0 g
Hence, the mass in grams of the hydrogen gas is 4.0 g
Learn more on Stoichiometry here: https://brainly.com/question/2861244
Select the chemical formula that contains 10 atoms of hydrogen.
2C4H10
2CH4
2C2H5
2C2H6
Please help me on this.
Answer: true
Explanation:
i hope this helps
How many grams are there in 9.03 x 1023 molecules of CO2?
Answer:
The correct answer is - 66g.
Explanation:
Given:
molecules of CO2 = 9.03 x 10^23
We know:
1 mole of any substance = 6.02x10^23 molecules. (Avogadro's number)
M (CO2) = 12 + (2x16) = 12 + 32 = 44g
Solution:
The mass of CO2 with 9.03x10^23 molecules would be:
44g of CO2 = 6.02x10^23 molecules.
So, the mass in grams of CO2 (X) = 9.03x10^23 molecules
Xg of CO2 = (44x9.03x10^23)/6.02x10^23 = 66g
Thus, the correct answer would be - 66gm.
A trait that is helpful to a species will become more common in that
species over time. This is called what.
A. genetic variation
B. transition
C. overproduction
D. selection
what kind of chemical reaction is this?
The process of cell division in which the resulting cells have half the chromosomes number of the parent cell.
Question 1 options:
ossmosis
mitosis
meiosis
diffusion
Answer:
Meiosis
Explanation:
This is The process of cell division in which the resulting cells have half the chromosomes number of the parent cell.
A doctor tapes a patients knees with a hammer to test the reflex which can provide information about the condition of the _____
Answer:
lol this is what you get for not answering my question and stealing points
Explanation:
Can you bond 2 silicon atoms (Si) together to form a complete (real) molecule? Explain your reasoning
Answer: no
Explanation: because silicon cannot share over 3 bonds
How many moles of O are in 12.6 mol Fe(NO3)3?
The answer is 113.4, rounded is 113
Explanation: Just multiply 12.6 mol Fe(NO3)3 by 9 ( 9 is the number of O atoms in the equation)
Answer: There are 113 moles of O in 12.6 moles of [tex]Fe(NO_3)_3[/tex]
Explanation:
Given : moles of [tex]Fe(NO_3)_3[/tex] = 113.4
To find : moles of O = ?
1 mole of [tex]Fe(NO_3)_3[/tex] contains = 9 moles of O atoms
Thus 12.6 mole of [tex]Fe(NO_3)_3[/tex] contains = [tex]\frac{9}{1}\times 12.6=113.4[/tex] moles of O atoms
Thus there are 113 moles of O in 12.6 moles of [tex]Fe(NO_3)_3[/tex]
True or False: The reactants and the products of a chemical equation always have the same number of atoms.
Answer: True
Explanation: It always has the same number because the both have or are using the same product.
HELP WITH A THESIS STATEMENT
I basically need a thesis statement on how DNA analysis relates to chemistry. The only problem is that I'm having trouble making it 'arguable'. My ideas were:
-DNA analysis relates to chemistry because it applies that knowledge when analyzing the DNA samples left at crime scenes in order to identify the suspect.
-DNA analysis relates to chemistry because it's a subcategory of chemistry, also known as forensic chemistry, where DNA left at crime scenes is analyzed to potentially link a suspect to a crime.
Do either of these sound good and are they arguable? If not can you reword it to be?
The second thesis statement is perfect. It supports the claim and presents main idea.
what type of galaxy is this
Explanation:
it is an spiral as it are rounded so
It is a spiral type of galaxy.
All human body systems works together m. What would happen to someone if one of their systems becomes inefficient?
Answer:
lol this is what you get for stealing my points
Explanation:
If the mass of all the reactants in a chemical reaction is 100g, what will the mass of all products be?
The genetic information found in DNA, chromosomes, and determines
A. the traits of the organism
B. the organism as an animal
C. the safety of the nucleus
D. the type of cell
Answer:
a
Explanation:
the traits of the organism
MORE THEN ONE ANSWER: Describe the energy transformations that occur in an ocean wave
Lesson 2.14-2.15
Question 7 options:
Wind does NOT transfer its energy to the water to create ocean waves.
When waves hit the shoreline, they transfer their energy to the land.
Wind transfers its energy to the water to create ocean waves.
When waves hit the shoreline, there is NO transfer of their energy to the land.
Answer:
2.) When waves hit the shoreline, they transfer their energy to the land.
3.) Wind transfers its energy to the water to create ocean waves.
Explanation:
I got it right on the test.
Wind transfers its energy to the water of the ocean to produce waves and this waves transfers its energy to the land.
What is transfer of energy?Transfer of energy means the relocation of energy from one system to another or from one form to other.
When wind flows over the surface of the ocean, then they transfer their energy to water of the ocean. This absorbed energy by the water of ocean is seen in the form of the ocean waves or also known as wave energy.
Now the vertical motion of this waves on the surface of the ocean due to the presence of the kinetic energy, transfers its energy to the sea shoreline and results in the displacement of the sand or land.
Hence, option (2) & (3) is correct i.e. wind transfers its energy to the water and waves transfers its energy to the land.
To know more about transfer of energy, visit below link:
https://brainly.com/question/2667612
Calculate the percent by mass of benzene in a solution containing 14.2 g of benzene in 28.0 g of
carbon tetrachloride
Answer:
33.65%
Explanation:
total weight of solution=14.2+28=42.2g
benzene=14.2/42.2*100=33.65%
Why is Newton's first law of motion is sometimes called the law of inertia
Answer:
The reason why Newtons first law of motion is sometimes called the law of inertia is because it states that if the object is in motion, it will not rest unless an unbalanced force acts on the object.
The Moon is always half lit and half dark.
True or
False
(i know this isn’t chemistry theres no science one.)
Answer:
True
Explanation:
Just like the Earth, half of the Moon is lit by the Sun while the other half is in darkness.
Answer:
Pretty sure it's true.
On Earth, we only see part of the moon that is illuminated or not, since it revolves around the Earth. However, the sun is stationary and doesn't move, meaning that one side of the moon is always lit by the sun as it revolves around the Earth.
How many moles are in 281 g of Ca(OH)2?
Answer:
3.79 moles
Explanation:
To convert moles to gams of a substance we need to find the molar mass of the substance. For Ca(OH)₂ th molar mass is:
1Ca = 40.08g/mol
2O = 2*16g/mol = 32g/mol
2H = 2*1.01g/mol = 2.02g/mol
The molar mass is:
40.08g/mol + 32g/mol + 2.02g/mol = 74.1g/mol
And moles are:
281g * (1mol / 74.1g) =
3.79 molesHow many particles are in one mole of copper (II) sulfate, CuSO4?
I need helps plss!!!!
Answer:
Copper = 2 Boron = 12 (copper and boron combined = 14)
Explanation:
the number after the element is the amount of atoms there is
How many grams of hydrogen reacts with 32 g of oxygen to produce 34 g of hydrogen peroxide
Answer:
2 grams.
Explanation:
H2 + O2 ---> H2O2
Using molar masses:
2*1 g hydrogen reacts with 2*16 g oxygen.
so 2g H2 reacts with 32 g O2.
Which reactions are oxidation-reduction reactions? Check all that apply.
(1) 2 upper N a plus upper C l subscript 2 right arrow 2 upper N a upper C l.
(2) Upper P b (upper O upper H) subscript 2 right arrow upper P b upper O plus upper H subscript 2 upper O.
(3)Upper C u plus 2 upper A g upper N upper O subscript 3 right arrow upper C u (upper N upper O subscript 3)subscript 2 plus 2 upper A g.
(4)Upper Z n upper B r subscript 2 plus 2 upper A g upper N upper O subscript 3 right arrow 2 upper A g upper B r plus upper Z n (upper N upper O subscript 3) subscript 2.
(5)Upper C upper H subscript 4 plus 2 upper O subscript 2 right arrow upper C upper O subscript 2 plus upper H subscript 2 upper O.
answer- 1,3, & 5
explanation- I did it on edge 2021
Answer:
the 1st 3rd and 5th ones
EDGE 2021
Explanation:
Answer:
A
C
E
Explanation:
2
The current temperature, wind, precipitation and
other atmospheric conditions at any given time describes what?
A Controls
B Climate
C Tropics
D Weather