Answers
Answer:
Poop Butt.
Explanation: Poop Butt.
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The rate constant of the elementary reaction CH3OCH3(g) CH4(g) +CH2O(g) is k = 8.33×10-6 s-1 at 427°C, and the reaction has an activation energy of 245 kJ mol-1. (a) Compute the rate constant of the reaction at a temperature of 545°C. s-1 (b) At a temperature of 427°C, 8.32×104 s is required for half of the CH3OCH3 originally present to be consumed. How long will it take to consume half of the reactant if an identical experiment is performed at 545°C?
Towards the sun
Answers
Answer:
This happens twice a year during Earth's orbit. Near June 21 the north pole is tilted 23.5 degrees toward our Sun and the northern hemisphere experiences summer solstice, the longest day of the northern hemisphere year.
...
Do other planets have seasons?
Uranus
30,589
97.8
Spring Equinox* 2050
Summer Solstice*
points toward the sun.
closer the earth is to the sun the more hot it will be the closer it is to summer,
you can see at D northern hemisphere is closest to sun and the north pole is pointing toward the sun.
Answers
Answer:
Read explanation.
Explanation:
Molarity is a unit used to measure the ratio per unit volume of the solution. So, in other words, and in our case, we call it the
ratio.
So, the amount of solute (moles of salt) per ml of solution will be the same, but the number of moles in each solution will be obviously different.
Hope it helped,
BiologiaMagister
(1) The samples of a salt solution are identical because they have the same amount of solute dissolved in them.
(2) The samples are different because the volume of their solution is different.
What is molarity?
Molarity is a measure of the concentration of a solute in a solution. It is defined as the number of moles of solute dissolved in one liter of solution.
That is, molarity quantifies the amount of the solute in a given volume of the solution.
Molarity (M) = Moles of Solute / Volume of Solution (in liters)
Thus, when it's stated that a 200-ml sample and a 400-ml sample of a solution of salt have the same molarity, it means that both samples have an equal concentration of salt molecules per unit volume, while molecules each sample have different volume.
Learn more about molarity here: brainly.com/question/30404105
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Answers
Answer:
K₂O
Explanation:
Given parameters:
Mass of K = 36.7g
Mass of O = 7.51g
Unknown:
Empirical formula of the compound
Solution:
The empirical formula of a compound is it's simplest ratio by which the elements in the compound combines. It differs from the molecular formula that shows the actual atomic ratios.
To find the empirical formula, follow this process;
Elements K O
Mass 36.7 7.51
Molar
mass 39 16
Number of
moles 36.7/39 7.51/16
0.94 0.47
Divide by
the smallest 0.94/0.47 0.47/0.47
2 1
Empirical formula is K₂O
Final answer:
The empirical formula of the compound composed of 36.7 g of potassium and 7.51 g of oxygen is K2O.
Explanation:
To determine the empirical formula of a compound, we need to find the ratio of the elements present. In this case, we have 36.7 g of potassium and 7.51 g of oxygen. To find the ratio, we need to convert these masses to moles by dividing them by the molar masses of potassium and oxygen. The molar mass of potassium is 39.10 g/mol and the molar mass of oxygen is 16.00 g/mol. Dividing the masses by the molar masses gives us 0.939 mol potassium and 0.469 mol oxygen. The ratio between these two elements is approximately 2:1, so the empirical formula of the compound is K2O.
Learn more about Empirical formula here:
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b. Some of the vapor initially present will condense.
c. The pressure in the container will be 100. mm Hg.
d. Only octane vapor will be present.
e. Liquid octane will be present.
Answers
Answer:
the final pressure (108.03 mmHg ) inside the container at 339 K is more than the vapor pressure of liquid octane (100 mmHg) at 339 K.
Hence,
b. Some of the vapor initially present will condense.
e. Liquid octane will be present.
Explanation:
Given that;
The vapor pressure of liquid octane, C8H18, is 100 mm Hg at 339 K
Initial volume of the container, V1 = 537 mL
Initial vapor pressure, P1 = 68.0 mmHg
Final volume of the container, V2 = 338 mL
Let us say that the final vapor pressure = P2
From Boyle's law,
P2V2 = P1V1
P2 * 338 = 68.0 * 537
338P2 = 36516
P2 = 36516 / 338
P2 = 108.03 mmHg
Thus, the final pressure (108.03 mmHg ) inside the container at 339 K is more than the vapor pressure of liquid octane (100 mmHg) at 339 K.
Hence,
b. Some of the vapor initially present will condense.
e. Liquid octane will be present.
Answers
Answer:
A chemical reaction is the process in which atoms present in the starting substances rearrange to give new chemical combinations present in the substances formed by the reaction. These starting substances of a chemical reaction are called the reactants, and the new substances that result are called the products.
Answers
Answer:
1,080 m
Explanation: