Answer: C
Explanation:
Which ion concentration does the pH scale measure? How long is the scale?
A sample of methane gas, CH4, occupies 3.25 L at temperature of 19.0 o C. If the pressure is held constant, what will be the temperature be if the volume expands to 10.00 L?
Answer:
625.46 °C
Explanation:
We'll begin by converting 19 °C to Kelvin temperature. This can be obtained as follow:
T(K) = T(°C) + 273
T(°C) = 19 °C
T(K) = 19 °C + 273
T(K) = 292 K
Next, we shall determine the Final temperature. This can be obtained as follow:
Initial volume (V₁) = 3.25 L
Initial temperature (T₁) = 292 K
Final volume (V₂) = 10 L
Final temperature (T₂) =?
V₁/T₁ = V₂/T₂
3.25 / 292 = 10 / T₂
Cross multiply
3.25 × T₂ = 292 × 10
3.25 × T₂ = 2920
Divide both side by 3.25
T₂ = 2920 / 3.25
T₂ = 898.46 K
Finally, we shall convert 898.46 K to celsius temperature. This can be obtained as follow:
T(°C) = T(K) – 273
T(K) = 898.46 K
T(°C) = 898.46 – 273
T(°C) = 625.46 °C
Therefore the final temperature of the gas is 625.46 °C
ASAP!!!
As current flows through a system, what happens to the voltage available at each load?
Answer:
The relationship between Voltage, Current and Resistance forms the basis of Ohm's law. In a linear circuit of fixed resistance, if we increase the voltage, the current goes up, and similarly, if we decrease the voltage, the current goes down.
Due Tomorrow!
What is [OH-] of a solution
with a pH of -1.0?
Answer in M
yo fm on ig chs_luucy. ill give u brainleist .
Answer:
this is a homework app, not a tell people to follow your ig app
Explanation:
Which of these is a compound?
A. Na
B. Cl
C. NaCl
D. C
Answer:
the answer is B
hope this is the answer you are looking for
Explanation:
When we look at a plant we notice that the leaves are green this is due to the
Actually If you look very close to a plant you see this:
And to answer your question leaves are green due to sun nutrients water and im not sure what else
Mg(OH)2
SO2
(NH4)2SO4
H3PO4
(All the numbers are subscripts!)
Answer:
I think this is it. and 38 points??
Please help and thank you
Answer: Its c
Explanation: i did it
Please Help :))) "A solution with a concentration of 5.7 x 10^-7M would be considered..."
Answer:
The solution is acidic.
Explanation:
To know which option is correct, we shall determine the pH of the solution. This can be obtained as follow:
Concentration of Hydrogen ion [H⁺] = 5.7×10¯⁷ M
pH =?
pH = –Log [H⁺]
pH = –Log 5.7×10¯⁷
pH = 6.2
pH scale reads as follow:
0 to 6.9 => Acidic
7 => Neutral
8 to 14 => Alkaline / basic
The pH of the solution (i.e 6.2) falls between 0 and 6.9 which indicates acidic.
Therefore, the solution is acidic.
A 40.0L tank of ammonia has a pressure of 12.7kPa. Calculate the volume of the ammonia if its pressure is changed to 8.4 kPa while its temperature remains constant
Answer:
60.5 L
Explanation:
If the gas temperature is constant, we can use Boyle's law:
P1V1 = P2V2
V2 = P1V1 / P2
P1 = 12.7 kPa
V1 = 40.0 L
P2 = 8.4 kPa
V2 = (12.7 kPa) (40.0 L) / (8.4 kPa) = 60.5 L
How many grams are in 26 moles of
magnesium hydroxide?
1,516.31168 grams of Magnesium Hydroxide
What is the function of triglyceride molecules?
1. Short term energy storage
2. Long term energy storage and insulation for animals
3. Making DNA
4. Speeding up reactions
help meeeeee please
Answer:
B because the particles of the container 2 is faster thus having more kinetic energy and heat
Explanation:
Help ASAP I’ll mark you as brainlister
Answer:
94.9% yield
Explanation:
Percent yield = actual yield/theoretical yield x 100
So you will divide the actual yield (what they really produced) over the theoretical yield (what they expected to produce). This will give you a decimal answer, which you multiply by 100 to get a percent.
169g/178g = 0.949 x 100 = 94.9%
Which of the following lines from the story indicates a flashback?
Calculate the number of grams of nitrogen dioxide that are produced from 4 moles of nitric oxide
Answer:
hope this help by the way found off of yahoo
Explanation:
Calculate the number of grams of nitrogen dioxide that are produced from
4 moles of nitric oxide.
2NO(g) + O2(g) -->2NO2(g)
I really need help with this... I need to know how to work it too... I can balance it out but not sure about grams... This is it balanced out with 4 moles of nitric oxide
4NO(g) + 2O2(g) ->4NO2(g) please help and explain i want to learn this
Which body systems is your blood a part of? Your answer
Calculate the number of moles in 85.0 g of carbon tetrafluoride (CFA).
Show Your Work
what element is A??????
Please help with q2
A) Vinegar is an Acid solution while, Ammonia is a basic solution, so when they react they form a neutral solution,
Therefore this is a neutralization reaction
B) The lower the pH value of a solution, the more acidic it is, and vise versa for basic,
In the table Vinegar has the lowest pH value, of 3. Therefore Vinegar is the most acidic in the table
C) The higher the pH value of a solution, the more basic it is
In the table Ammonia has the highest pH value of 12. Therefore Ammonia is the most basic in the table
Happy to help :)
If you need any more help, you can ask me
Which structure is found in producers in nearly all ecosystems?
A. stems
B. chloroplasts
C. leaves
D. rhizomes
please ive been stuck on this one forever
Answer:
Melting-Solid-Liquid-Added
Freezing-Liquid-Solid-Removed
Vapourization-Liquid-Gas-Added
Condensation-Gas-Liquid-Removed
Sublimation-Solid-Gas-Added
Deposition-Gas-Solid-Removed
Explanation:
Help please see attached screenshot
Answer:
balanced equation of glucose
6CO2 + 6H2O----------C6H12O6 + 6O2
in the presence of sun light.
Will award brainliest! Between which two ionization energies would you expect to see the biggest jump for calcium? A. 11-12
B. 12-13
C. 13-14
D. 14-15
answer:lettter B that is answer
Science, please help and thank you!!
Describe a sodium (Na) atom and a chlorine (Cl) atom
Answer:
Both in group 1
Explanation:
Sodium is a very reactive metal
Chlorine is a very reactive non metal
Both have one Valence electron
What type of substance do these statements describe?
- It is a long chain.
- It contains carbon, hydrogen, and oxygen atoms.
- It has double bonds.
- It is insoluble in water.
- It is used for energy storage in living things.
carbohydrate
lipid
monosaccharide
protein
Answer:
lipid
Explanation:
I just know the answer i don't really have a explanation sorry
Answer:
lipid
Explanation:
edge 2021
Location closer to the
equator receives less energy
from the sun.
True or false
Answer: true
Explanation:
Hope this helps
formation of ionic bond is affected by
Answer:
Ionization energy, electronegativity, and lattice energy are the factors that influence the formation of ionic bonds of elements.
If 95 grams of Iron are needed to react with sulfur, how many grams of sulfur are involved in this reaction?
2 Fe + 3 S=Fe2S3
Answer:
82 g S
Explanation:
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 81.6 grams of sulfur are involved in this reaction.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number.
2 Fe + 3 S[tex]\rightarrow[/tex]Fe[tex]_2[/tex]S[tex]_3[/tex]
mass of iron = 95 grams
Molar mass of iron=55.8450 g/mol
number of moles of iron =Given mass÷ Molar mass of iron
number of moles of iron=95÷ 55.8
number of moles of iron=1.70 moles
The mole ratio between iron and sulfur is 2:3
moles of sulfur = (3/2) moles of iron
moles of sulfur = (3/2)×1.70
moles of sulfur=2.55 moles
Mass of sulfur= number of moles of sulfur× Molar mass of sulfur
=2.55× 32
=81.6g
Therefore, 81.6 grams of sulfur are involved in this reaction.
To know more about mole, here:
https://brainly.com/question/15209553
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