The acceleration of an object is directly proportional to the net force acting on it, as per Newton's second law of motion.
Newton's second law of motionTo determine the resultant force causing the given acceleration, we need to use the formula F = ma, where F is the net force, m is the mass of the object, and a is the acceleration.
In this case, the given mass of the object is 8 kg, and the acceleration is 5 m/s². Substituting these values in the formula, we get:
F = ma F = 8 kg x 5 m/s²F = 40 N
Therefore, the resultant force acting on the object is 40 N. This means that there is a net force of 40 N acting on the object, which is causing it to accelerate at a rate of 5 m/s².
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If 500. g of magnesium chloride is produced in the above reaction, how many grams of hydrogen gas would be produced?
If 500 g if magnesium chloride are created, the reaction described above would result in 8.23 grams of hydrogen gas.
What is the benefit of magnesium chloride?To prevent and cure low levels of magnesium inside the blood, this drug is a mineral supplement. The symptoms of having too much stomach acid, such as indigestion, heartburn, and stomach discomfort, are also treated with some brands.
Molar masses of MgCl2 are calculated as follows: moles od MgCl2 = mass of MgCl2 / (24.31 g/mol Plus 2(35.45 g/mol))
Moles of MgCl2 are equal to 4.07 mol, and the mass of H2 is equal to 4.07 mol times the molar mass of H2, or 2.02 g/mol, for a total mass of 8.23 g.
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4. In an experiment, 170.9 g of C_{2}*H_{4} was reacted with 52.75L of , 64.1 g of C*O_{2} is produced .What is the limiting reagent? ) What is the percent yield of this reaction?
O₂ is the limiting reagent and C₂H₄ is in excess.
The percent yield is 92.8%
The Limiting ReagentTo determine the limiting reagent, we need to compare the amounts of reactants and products using stoichiometry. The balanced equation for the reaction between C₂H₄ and O₂ to produce CO₂ and H₂O is:
C₂H₄ + 3 O₂ → 2 CO₂ + 2 H₂O
From the given data, we can calculate the number of moles of each reactant:
moles of C₂H₄ = 170.9 g / 28.05 g/mol = 6.089 mol
moles of O₂ = 52.75 L * (1 mol / 22.4 L) = 2.357 mol
moles of CO₂ produced = 64.1 g / 44.01 g/mol = 1.456 mol
Now we can use the stoichiometric coefficients from the balanced equation to determine which reactant is limiting:
For every 1 mole of C₂H₄, we need 3 moles of O₂ to produce 2 moles of CO₂.
The moles of O₂ available (2.357 mol) are less than what is required (3 × 6.089 mol = 18.267 mol) if all the C₂H₄ reacts, so O₂ is the limiting reagent.
Therefore, O₂ is the limiting reagent and C₂H₄ is in excess.
To calculate the theoretical yield of CO₂, we use the amount of limiting reagent:
moles of CO₂ produced = 2.357 mol O₂ × (2 mol CO₂ / 3 mol O₂) = 1.571 mol CO₂
theoretical yield of CO₂ = 1.571 mol × 44.01 g/mol = 69.12 g CO₂
The percent yield of the reaction can be calculated by dividing the actual yield (64.1 g) by the theoretical yield (69.12 g) and multiplying by 100:
percent yield = (64.1 g / 69.12 g) × 100% = 92.8%
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The volume and number of moles of a gas are held constant. Which of the following is true for the pressure of the gas? (1 point) Select one: a. It is inversely proportional to the temperature of the gas. b. It is directly proportional to the temperature of the gas. c. It is inversely proportional to the mass of the gas. d. It is equal to the mass of the gas.
The correct answer is
a. It is inversely proportional to the temperature of the gas.
What is Mass?
Mass is a fundamental physical property of matter that determines the weight and force of an object in a gravitational field. It is the amount of matter in an object, and is typically measured in units such as kilograms or grams. The mass of an object is constant and does not change with location, while weight can vary depending on the gravitational force at a given location. Mass is also a measure of the inertia of an object, which is its resistance to a change in motion.
This question relates to the gas laws, specifically the relationship between pressure, volume, temperature, and number of moles of a gas. According to Boyle's Law, when the number of moles of a gas is held constant, pressure and volume are inversely proportional to each other.
However, the question states that volume and number of moles are held constant, so this relationship doesn't apply. Instead, we need to consider Charles's Law, which states that at constant pressure and number of moles, the volume of a gas is directly proportional to its temperature.
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2. What is the topic of the question?
Which substance forms propanoic acid as one of the products when it reacts with hot
concentrated acidified potassium manganate(VII)?
A but-1-ene
B but-2-ene
C 2-methylpropene
D 2-methylbut-1-ene mel
Why did you choose this answer?
nouzou
no
oorlo voy
The potassium permanganate is an inorganic compound with the chemical formula KMnO₄. Its IUPAC name is given as potassium manganate (VII). The substance which forms propanoic acid is but-1-ene. The correct option is A.
What is oxidation?The oxidation is defined as the process which involves the addition of oxygen or removal of hydrogen. The reaction of potassium manganate (VII) with an alkene is an oxidation reaction.
The acidified potassium manganate (VII) solution oxidizes the alkene by breaking the 'C'-'C' double bond and replacing it with 'C'-'O' double bonds.
The reaction of but-1-ene in presence of potassium manganate (VII) is:
CH₃CH₂CH = CH₂ → CH₃CH₂COOH + CO₂
Thus the correct option is A.
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In one experiment, 7.62 g of iron are allowed to react with 8.67 g of sulfur. Calculate the mass of iron (Ill) sulfide that can be formed.
1) What’s the Mass of Fe2S3?
2) What is the limiting reactant?
Answer:
The mass of iron sulphide formed is 14.2 g
Explanation:
Starting off with a balanced chemical equation:
2Fe + 3S --> Fe₂S₃
to find the mass of Fe₂S₃ and thus the limiting reagent, we can first find the number of moles of each reactant. Number of moles is found by dividing mass by molar mass (found using a standard IUPAC Periodic Table).
n(Fe) present = m/M = 7.62/55.85 = 0.13644 mol
n(S) present = m/M = 8.67/32.07 = 0.27035 mol.
Using the values for the number of moles of each reactant, we can find the limiting reagent by testing each with the molar ratio of the equation.
If (Fe) is the limiting reagent, then moles of sulphur required = n(Fe)/2 × 3
= 0.20466 mol. Since we have excess of what's required of sulphur, then iron could be the limiting reagent.
Now we test it with (S). If (S) is the limiting reagent, then moles of iron required = n(S)/3 × 2 = 0.18023 mol. Since we have less than what is required, therefore, sulphur is NOT the limiting reagent.
Hence, Iron is the limiting reagent.
Now we have the limiting reagent, we can use this to calculate the number of moles of Fe₂S₃, since the limiting reagent is the reactant that is completely consumed.
Since stoichiometry of Fe : Fe₂S₃ = 2 : 1, therefore:
moles of (Fe) = 2× moles of (Fe₂S₃).
hence, moles of (Fe₂S₃) = 1/2 × 0.13644 mol = 0.06822.
Finally, we can multiply the moles of iron sulphide by the molar mass, to get the mass.
m(Fe₂S₃) = nM = 0.06822 × (55.85×2 + 32.07×3) = 14.2 g (3 significant figures, since all the data in the question is in 3 sig. figs).
write outh the nuclear equiation for the beta decay of Cobalt-60
Answer:
答えはコバルト88
Explanation:
colbalt-60 は colbaly88 によって知られていたため
The density of a gaseous organic compound is 340g/L at 45°C and 1.7atm. what is it's mole
To determine the number of moles of the gaseous organic compound, we can use the ideal gas law equation: PV = nRT, where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature.
How to calculate ?First, we need to convert the density to mass per volume. The density of the gas is given as 340g/L. Therefore, the mass of 1 L of the gas is 340 g.
Next, we need to use the ideal gas law to calculate the number of moles. We know that the pressure is 1.7 atm, the temperature is 45°C (which is 318 K), and the volume can be calculated using the density and the molar mass of the compound. The molar mass can be determined from the molecular formula of the compound.
Assuming the compound is a hydrocarbon, we can use an average molar mass of 28. Thus, the volume of 1 mole of the gas can be calculated as follows:
V = (molar mass/density) × 1000 ml/L = (28/340) × 1000 = 82.35 ml/mol
Using the ideal gas law equation and plugging in the given values, we get:
n = (PV) / (RT) = (1.7 atm × 82.35 ml) / (0.0821 L atm/mol K ×318 K) = 0.839 mol
Therefore, the number of moles of the gaseous organic compound is 0.839 mol
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Introduction:
Define the following terms:
Chemical reaction,
reactant,
product,
precipitate,
Law of Conservation of Mass
Answer:
chemical reaction: substances are converted to one or more different substances
reactant: A chemical substance that is present at the start of a chemical reaction and changes.
product: a substance that is present at the end of a chemical reaction.
Precipitate: an insoluble solid that emerges from a liquid solution
Law of conservation of mass: a discovery that mass is neither created nor destroyed in chemical reactions.
Explanation:
You have 550mL of 7M solution HCI and you want to make 3L of diluted solution, what will the new concentration be?
According to the molar concentration, if you have 550 ml of 7 M solution HCI and you want to make 3 L of diluted solution,the new concentration will be 1.28 M.
What is molar concentration?Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.
The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.In case of two solutions it is calculated as, M₁V₁=M₂V₂ on substitution gives M₂=7×550/3000=1.28 M.
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