Help me with this please
Answer:
–253.5 °C
Explanation:
We'll begin by calculating the number of mole in 6 g of CO₂. This can be obtained as follow:
Molar mass of CO₂ = 12 + (2×16)
= 12 + 32
= 44 g/mol
Mass of CO₂ = 6 g
Mole of CO₂ =.?
Mole = mass / molar mass
Mole of CO₂ = 6 / 44
Mole of CO₂ = 0.136 mole
Next, we shall convert 225 mL to L.
1000 mL = 1 L
Therefore,
225 mL = 225 mL × 1 L / 1000
225 mL = 0.225 L
Next, we shall determine the temperature of the gas. This can be obtained as follow:
Pressure (P) = 0.855 atm
Volume (V) = 0.225 L
Number of mole (n) = 0.136 mole
Gas constant (R) = 0.0821 atm.L/Kmol
Temperature (T) =?
PV =nRT
0.855 × 0.255 = 0.136 × 0.0821 × T
0.218025 = 0.0111656 × T
Divide both side by 0.0111656
T = 0.218025 / 0.0111656
T = 19.5 K
Finally, we shall convert 19.5 K to degree celsius (°C). This can be obtained as follow:
T(°C) = T(K) – 273
T(K) = 19.5 K
T(°C) = 19.5 – 273
T(°C) = –253.5 °C
Therefore, the temperature of the gas is –253.5 °C
life under the sun i need the summaries
SOMEONE HELP PLEASE !!
Which is not an electrolyte
1. Ionic salt
2. Acid
3. Base
4. Water
PLEASE HELP ME
salt is not because it gets u dehydrated
please help me with question A and B pleaseeeeee
Answer:
♀️?sorryyyyyyyyyyyyy
At 35.0°C and 3.00 atm pressure, a gas has a volume of 1.40 L. What pressure does the gas have at 0.00°C and a volume of 0.950 L? Which equation should you use? P subscript 2 equals StartFraction P subscript 1 V subscript 1 T subscript 2 over T subscript 1 V subscript 2 EndFraction. P subscript 2 equals StartFraction T subscript 1 V subscript 2 over P subscript 1 V subscript 1 T subscript 2 EndFraction. P subscript 2 StartFraction equals V subscript 1 V subscript 2 over T subscript 1 T subscript 2 EndFraction P subscript 1.
Answer:
a
3.92
Explanation:
How many atoms of hydrogen are in 10.25 grams of
water?
An unopened, cold 2.00 L bottle of soda contains 46.0 mL of gas confined at a pressure of 1.30 atm at a temperature of 5.0 ℃. If the bottle is dropped into a lake and sinks to a depth at which the pressure is 1.52 atm and the temperature is 2.09 ℃, what will be the volume of the gas in the bottle? Explanation needed
Answer:
[tex]V_2= 38.9mL[/tex]
Explanation:
Hello there!
In this case, since this is a problem about the combined gas law because the temperature, volume and pressure undergo a change:
[tex]\frac{P_2V_2}{T_2}= \frac{P_1V_1}{T_1}[/tex]
Thus, since we need the final volume, V2, we solve for it as shown below:
[tex]V_2= \frac{P_1V_1T_2}{T_1P_2}[/tex]
Now, we plug in the data to obtain:
[tex]V_2= \frac{1.30atm*46.0mL*(2.09+273)K}{(5+273)K*1.52atm}\\\\V_2= 38.9mL[/tex]
Best regards!
Three moles of oxygen gas is stored in a 2.5-liter container at 35°C. What is the pressure of this gas?
Answer:
30.34 atm
Explanation:
Using the general gas law formula;
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
T = temperature (K)
R = gas law constant (0.0821 Latm/molK)
According to the information provided in this question,
n = 3mol
T = 35°C = 35 + 273 = 308K
V = 2.5L
P = ?
Using PV = nRT
P = nRT/V
P = 3 × 0.0821 × 308/2.5
P = 75.8604 ÷ 2.5
P = 30.34 atm.
why is hydrogen a nonmetal,usually placed with group 1 elements in the periodic table even though it does not show a metallic property like the alkalietals?
Periodic table has been divided into three, one is metal, second is non metal and third metalloid. Therefore, hydrogen is considered as non metal.
What is metal?Metals are those elements which is hard, conduct electricity, ductile, lustrous and malleable.
Lets take property
1.Since metals have free electrons that's why they can conduct electricity
2. Since atoms in metals are very closely packed in a definite crystal so Aluminium is solid. It is not brittle that is it can not be broken down easily
3. It does not react with water.
4.It is denser than water hence it sink in water.
Since hydrogen has only 1 electron in its outermost shell, to complete its duet and gain stability, hydrogen has to gain 1 electron just like halogen. So, on this basis hydrogen is considered as non metal.
Therefore, hydrogen is considered as non metal.
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justin noticed several cracks in the sidewalk. Weeds are growing through them, cause the crack to expand. What process is this?
Answer:
Explanation:
Weeds and Small Plant Roots Exploit Existing Concrete Cracks
Instead, the plant's roots take advantage of existing microscopic cracks. New cell growth takes place at the tips of plant roots. ... Eventually, molecule by molecule, the plant's growth can force its way into the slab and create a surface crack.
Under similar conditions, which gas diffuses most rapidly through a small
opening?
a. Methane, CH4
b. Carbon dioxide
C. Sulfur dioxide
d. Oxygen
e. Chlorine
Answer:
e
Explanation:
a
Conclusion:
sports
What three temperature measurements Inust you make to calculate the specific heat of a sample using a calorimeter?
Answer:
Explanation:
Heat and temperature are two different but closely related concepts. Note that they have different units: temperature typically has units of degrees Celsius ( ∘ C ^\circ\text C ∘Cdegrees, start text, C, end text) or Kelvin ( Kstart text, K, end text), and heat has units of energy, Joules ( Jstart text, J, end text).
10. Aqua means "water" or "a light blue color." Marine refers to the sea. Use this information
to determine what the gemstone aquamarine might look like.
Determine what the gemstone aquamarine might look like?
Answer:
[tex] \huge\blue{ \mid{ \underline{ \overline{ \tt ♡ AQUAMARINE ♡ }} \mid}}[/tex]
=> The colour of this stone is usually a pale greenish blue, owing to the presence of iron impurities. Stones that are treated with heat look more blue than green. On the Mohs scale of hardness, aquamarine ranges between 7.5 and 8 making it a relatively hard gemstone.
=> The best way to identify a real aquamarine stone is by looking at its colour. In its natural form, they have a pale blue colour, which is similar to seawater. They may have a slight green or yellow tint as well. Naturally occurring gems have excellent clarity and transparency.
=> The hardness of the stone is another feature you can use to identify the stone. Aquamarine stones are hard and they don’t get scratches easily. However, they can easily scratch glass and other such surfaces. So, if you find visible scratches on the stone, rethink your decision to buy it.
=> Most faceted aquamarine stones are clean to the eye and clear of any inclusions. However, translucent and opaque aquamarine is also available. These are usually fashioned into cabochons or beads. In some cases, inclusions may appear as parallel tubes. Such stones can be crafted to show a cat’s eye. Stones with cat’s eye and star effect are rare and highly priced.
What is the Environmental Lapse Rate?
Answer:
The rate at which the air temperature changes with height in the atmosphere surrounding a cloud or a rising parcel of air. The overall average rate is a decrease of about 6.5°C/km, but the rate varies greatly in different regions of the world, in different airstreams, and at different seasons of the year.
Valerie creates a model using three different rocks. The rocks are classified as igneous, metamorphic, and sedimentary.
Which property does Valerie use for classification purposes?
color
formation
shape
texture
The rocks are classified as igneous, metamorphic, and sedimentary use the formation for classification purposes.
What are the 3 types of rocks existing on earth?The outermost of them, called the crust, is composed of three types of rocks: magmatic, sedimentary and metamorphic. They are defined through the origin of several minerals and can be characterized with chemical composition, texture or shape, but the most used specification is based on composition.
The property does Valerie use for classification purposes is formation.
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The following graph shows a decay chain. Which part of the decay will take the most time? the decay of U-238 to Th-234, the decay of Th-234 to Ra-226, the decay of Ra-226 to Po-214, the decay of Po-214 to Pb-206
A- the decay of U-238 to Th-234
right on edge 2021
Answer:
A) the decay of U-238 to Th-234
:)
Explanation:
in which of these compounds are there twice as many oxygen atoms as hydrogen atoms?
Answer:
G - H2SO4
Explanation:
two hydrogen atoms and 4 oxygen atoms
Wing practice problems:
1. How many grams of water could freeze at 0°C when 525 KJ of energy is released?
Answer:
g x 334 J/g = 3340J or 3.34kJ.
Explanation:
The energy required for one gram of a solid to melt without experiencing any temperature change is known as the heat of fusion. 3.34 KJ of energy is released.
What is heat of fusion ?The most typical illustration is when solid transforms into liquid water. The molecules within the substance become less structured as a result of this process, which is also known as melting or heat of fusion.
The change in enthalpy ( H ) that occurs when a substance transforms from a solid to a liquid state.
The amount of energy required for one gram of a liquid to evaporate (boil) without a change in pressure is known as the heat of vaporization.
Q = gram × 334 J / g
= 3.34 KJ
Thus, at 0°C when 525 KJ of energy released is 3.34 KJ.
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unknown substance's mass: 75.0g, unknown substances molar mass = 150.0 g/mol, Hfus = 5.0x10^3 J/mol, Hvap = 1.00 x 10^4 J/mol, unknown substance's specific heat (liquid) = 2.2 J/g, unknown substance's specific heat (gas) = 4.8 J/g, unknown substances's specific heat (solid) = 5.0 J/g; Calculate the amount of heat (in J) for the unkown sample as it is heated at a constant rate from 10.0c to 25.0c as it passes through each of the following regions: region uv
Answer:
kkajqjjqjqjnqnqnqjqjq
I am researching something and I need your (Brainly's) opinion
Based on your opinion, Do you think social media is bad? you don't have to but tell me why
Answer:
I think it could be bad for some people because children could be exposed to toxic content. Without parent restrictions there could be some serious harm. Another reason, is that being on social media could distract kids from homework, chores, etc. (There is also scams and fake advertising)
I personally deleted a lot of my social media acc’s last year cause of me getting stressed and sad over it, but for now I’m pretty good I’m making friends off it having lots of fun
What is the volume of 16.0 g of SO2 (g) at STP?
Answer:
Explanation:
At STP 1 mole of an ideal gas = 22.4 L.
Assuming SO2 (sulfur dioxide) acts as an ideal as, we have 16 g SO2 x 1 mol/64 g = 0.25 moles SO2
0.25 moles x 22.4 L/mole = 5.6 liters
What is the common uses for Manganese??
YOU WILL BE REPORTED IF THERES LINKS>>> BRAINLIEST 2.5 liters of gas is stored at a pressure of 100 atm, if the volume were increased to 4 liters, what would be the new pressure?
a. 250 atm
b. 1000 atm
c. 62.5 atm
d. 160 atm
Answer:
a. 250 atm
Explanation:
IT MIGHT BE WRONG PLS DOUBLE CHECK
What are the bronsted lowry acids in the following equilibrium reaction CN+H2O
Answer:
dbdbdbdjdbdjdb zbdjdjdjdirfjfjrjdudhdhdhd
In balancing a chemical equation, which of the following are you allowed to do?
A) change coeffecients
B) change superscripts
C) change subscripts
D) add new substances
Answer:
Change Coefficients
Thank you
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Help please :<
I just need the answer for this as quickly as possible.
Answer:
I think its the 3th one
Explanation:
Describe the motion of particles in a
solid compared with a liquid or gas.
Is silicon(IV) oxide the same as silicon dioxide
Answer:
Yes, it is
Explanation:
Silicon (IV) oxide, commonly known as silica is a substance that majorly constitutes SAND. It has the chemical formula, SiO2, which contains a combination of silicon and oxygen.
The IUPAC name of SiO2 is Silicon IV oxide, which can also be referred to as Silicon dioxide because the structure the compound contains two (-di) oxygen atoms. Hence, based on the question, silicon(IV) oxide is the same as silicon dioxide.
Which of the following could be the hypothesis supported by an investigation that demonstrates the law of conservation of mass in relation to chemical reactions?
A. If the reaction obeys the law of conservation of mass, then mass will be the same before and after the reaction.
B. If the reaction obeys the law of conservation of mass, then mass will increase after the reaction.
C. If the reaction obeys the law of conservation of mass, then mass will be different before and after the reaction.
D. If the reaction obeys the law of conservation of mass, then mass will decrease after the reaction.
According to the law of conservation of mass, mass is neither created nor destroyed in a chemical reaction. If the reaction obeys the law of conservation of mass, the mass before and after the reaction will be the same.
What does the law of conservation of mass?Any element's mass at the start of a reaction will equal its mass at the end of the reaction. Accounting for all reactants and products in a chemical reaction results in the same total mass at any point in time in any closed system.
When coal, for example, is burned, the carbon atom transforms into carbon dioxide. The carbon atom undergoes transformation from solid to gas, but its mass remains constant.
According to the law of conservation of mass, the amount of mass that enters a chemical reaction in the form of reactants must equal the amount of mass that exits the reaction process in the form of products. This is only possible in a closed system. For example, if 2g of reactant A reacts with 32g of reactant B, the mass of the product AB formed is 34g.
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