What is a chemical solution and what are the names of its components?
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Answer:
A chemical solution is defined as a homogeneous mixture of two or more substances. There are two components of chemical solution that include solute and solvent.
Solute is the component that get dissolved in another substance and solvent is the substance that dissolve solute.
For example: carbon dioxide in water. Where carbon-dioxide is solute and water is solvent.
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What is the velocity of a 500 kilgram elevator that has 4000 joules of energy?
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Answer:
The correct answer is red-sensitive nerves.
Explanation:
The individuals with protanopia do not possess the tendency to sense red light, the individuals with tritanopia do not sense blue light, and the individuals with deuteranopia do not sense green light. If an individual is perceiving green color then in that case, the yellow sensitive nerves must function somewhat efficiently as green is an amalgamation of blue and yellow. Thus, the red-sensitive nerves would not be reacting appropriately for this individual.
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2 moles H₂ ------- 1 mole O₂
27.4 moles H₂ ---- ?
27.4 * 1 / 2 =
= 27.4 / 2
= 13.7 moles of O₂
hope this helps!
Answers
Answer : The total mass of oxygen gas released in the reaction will be, 12.8 grams
Explanation :
Law of conservation of mass : It states that mass can neither be created nor be destroyed but it can only be transformed from one form to another form.
This also means that total mass on the reactant side must be equal to the total mass on the product side.
The balanced chemical reaction will be,
According to the law of conservation of mass,
Total mass of reactant side = Total mass of product side
Total mass of = Total mass of
or,
Total mass of = Mass of
+ Mass of
As we are given :
Total mass of = 16.12 grams
The mass of = 9.72 grams
So,
Total mass of = Mass of
+ Mass of
Therefore, the total mass of oxygen gas released in the reaction will be, 12.8 grams
Final answer:
The law of conservation of mass states that the total mass remains constant before and after a chemical reaction. In the decomposition of magnesium oxide into magnesium and oxygen, the mass of oxygen gas released can be found by subtracting the mass of the substance after the reaction (magnesium) from the mass before the reaction (magnesium oxide), resulting in 6.40 g of oxygen gas.
Explanation:
The question pertains to the law of conservation of mass, which states that mass is neither created nor destroyed. It is also linked to the third postulate in Dalton's series. In the case of magnesium oxide decomposing into magnesium and oxygen, you can use this law to solve the problem.
If 16.12 g of magnesium oxide decomposes to 9.72 g of magnesium, this means that the rest of the mass must be the oxygen gas released. The mass of the magnesium oxide (16.12 g) minus the mass of the magnesium (9.72 g) gives the mass of the oxygen gas. Therefore, the mass of oxygen gas released is 16.12 g - 9.72 g = 6.40 g.
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B. 2CuS + 302 –>2CuO + 2SO2
C. S8 + 802 —> 8SO2
D. C3H8 + 5O2 —> 3CO2 + 4H2O
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Answer:
A.
Explanation:
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Final answer:
Among alpha,beta, neutron, and gamma radiations, gamma radiation has the greatest ability to penetrate matter. It can pass through dense and thick materials, including a few feet of concrete and even lead.
Explanation:
When comparing the ability of different types of radiation to penetrate matter, from least penetrating to most penetrating, the sequence is alpha < beta < neutron < gamma. This means the gamma radiation is the most penetrating type of radiation. Alpha radiation has the least penetration ability and can be blocked by even a thin sheet of paper. Beta radiation has slightly higher penetration power, able to go through about 3mm of aluminum, for instance. Gamma radiation, on the other hand, can penetrate much denser and thicker materials. For example, high-energy gamma radiation can pass through a few feet of concrete, and even lead to a depth of 2 or more centimeters.
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Answers
P=?
We know that:
-V=1L
-R=8.314kPa•L/mol•K
-T=10°C (we need to converse °C in K so 10+273) =283K
For n, we know that we have 64g of O2 and were looking for the quantity of mole in these 64g. 1 mole of O2 is 15.999g so 64g would be 4.0mol ((64g • 1mol)/15.999g) so n=4.0
P•1L= 4.0mol • 8.314kPa•L/mol•K • 283K
P • 1L = 9411
P = 9411/1L
P = 9411kPa