The concentration of the new solution is 0.003 M.
How do we calculate the required concentration?Required concentration of the final solution will be calculated by using the below equation as:
M₁V₁ = M₂V₂, where
M₁ & V₁ are the molarity and volume of initial solution.
M₂ & V₂ are the molarity and volume of final solution.
On putting values from the question, we get
M₂ = (0.75)(2) / (500) = 0.003 M
Hence required concentration is 0.003M.
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How can these objects all weigh the same but be different sizes?
What type of reaction is illustrated?
C + 2F2 → CF4
Answer:
Synthesis Reaction
Explanation:
An synthesis reaction is one in which two or more atoms/molecules react to create a different molecule. These reactions follow the general structure: A + B --> AB.
More specifically, this is an addition reaction. An addition reaction occurs when two or more atoms/molecules combine to create a larger molecule. In this case, carbon and fluorine react to form carbon tetrafluoride, a larger molecule consisting of all the reactants.
This is not a decomposition reaction because these reactions involve a molecule breaking down into atoms or simpler molecules. These reactions follow the general structure: AB --> A + B.
This is not a single-replacement reaction because these reactions involve atoms replacing atoms of a different element in a compound. These reactions follow the general structure: A + BX --> B + AX.
PLEASE HELP DUE IN 10 MINUTES In your own words, how does photosynthesis work?
Answer:
During photosynthesis, plants take in carbon dioxide (CO2) and water (H2O) from the air and soil
What would the total surface area be if our large cube were divided into 8000 cubes with each side having a length of 1 cm?
48,000 cm2
8000 cm2
36,000 cm2
96 cm2
Answer:
48 000 cm^2
Explanation:
8000 1cm cubes
each 1 cm cube side is 1 cm^2 and there are six sides to the cube , so each cube has 6 cm^2 surface area
and there are 8000 of them 8000 * 6 cm^2 = 48 000 cm^2
True or false: in an ionic bond, the difference in electronegativities between the two bonding
atoms is greater than the difference in a covalent bond.
Answer:
its true hope this helped :)
a common chemicals used as a rising agent
is baking soda. it's chemical name is sodium
bicarbonate. it has a formula of NaHCO3.
what is the molar mass of sodium
bicarbonate?
A telescope would be MOST useful in answering which question? . O How do rockets move in space? What shape is a human skin cell? O What is on the surface of the Moon? O How do worms breathe underground?
Answer:
what is on the surface of the moon.
Explanation:
illustrate an oxygen atomic drawing
a radioisotope has a half life of 32 hours. if the average decay rate is 24 million decays per second on monday morning at 8 am, what was the decay rate on the previous morning at 10 am g
The decay rate of the radioisotope on the previous morning at 10 am is 38.7 million decays per second.
Initial decay rate of the radioisotopeThe initial mass of the radioisotope is calculated as follows;
N = N₀(¹/₂)^t/h
where;
h is half life = 32 hourst is time of day, from 8 am to 10 am previous day = 22 hours24 M/s = N₀(¹/₂)^(22/32)
24 M/s = N₀(0.62)
N₀ = (24 M/s)/(0.62)
N₀ = 38.7 M/s
Thus, the decay rate of the radioisotope on the previous morning at 10 am is 38.7 million decays per second.
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what is the molar mass of H,S
Answer:
the answer to your question is 1.00784 u
molar mass of H₂S
= 2.Ar H + 1.Ar S
= 2. 1,00784 u + 1. 32,065 u
= 34.08068 u
Organic compounds form the basis of?
A Carbon
B Life
C Water
Answer:
A Carbon
Explanation:
Which is true about distillation? (1 point)
It uses semipermeable membranes to filter out particles.
It removes mainly large particulate contaminants which settle to the bottom.
It is one of the easiest and cheapest filtration solutions to implement.
It may leave some chemicals such as herbicides and pesticides in the water.
Answer:
It may leave some chemicals such as herbicides and pesticides in the water
Explanation:
i just took the test
Distillation may leave some chemicals such as herbicides and pesticides in the water. Therefore, option D is correct.
What is distillation ?By using selective boiling and condensation, distillation, also known as traditional distillation, is the process of removing the constituents or compounds from a liquid mixture. The process of heating solid materials to create gaseous products is known as dry distillation.
A chemical is purified through distillation by being separated from a non-volatile or less-volatile substance. Because various compounds frequently have different boiling points, when a mixture is distilled, the components frequently separate from the mixture.
Among the many industrial uses of distillation are the production of alcoholic drinks, water purification, and oil refining. Distillation is a physical procedure that removes desired pure compounds from an initial source using heat and other techniques.
Thus, option D is correct.
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Which of the following happens when a reaction reaches dynamic equilibrium in a closed system?
A) The concentrations of the reactants and products increase.
B) The concentrations of the reactants and products remain constant
C) The rate of the forward reaction is faster than the rate of the reverse reaction.
D) The rate of the forward reaction is slower than the rate of the reverse reaction
Answer: B
Explanation:
At equilibrium, the rate of the forward reaction is equal to the rate of the reverse reaction, and thus the concentrations of the reactants and products must be constant.
Based on log rules and the way ph is calculated, what is the difference in [oh– ] concentration between point a and point b. 101 105 106 107
Based on their pOH values, the difference in [OH– ] concentration between point A and point B is 10^6.
What is pH of a substance?The pH is determined by the concentration of Hydrogen ions [H+]. The higher the concentration of H+ ions, the lower the pH of a substance. If the concentration of H+ is greater than OH-, the material is acidic, i.e. the pH value is less than 7
In this case, the formula for this will be:
[tex]pH= -log[H+][/tex]
So we have:
[tex][OH]= 14-1= 10^{-13}\\[OH] = 14-7=10^{-7}[/tex]
Therefore, the difference in [OH– ] concentration between point A and point B is 10^6.
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Answer: 10^6
Explanation: edge2023
what is the mass in grams for 7.14x10^3 mol of PCI3?
Answer:
980,536.2 grams
Explanation:
The mass of a compound is equal to its moles times its molar mass.
The molar mass of PCl3 is 137.33 g/mol
137.33 x 7.14 x 10^3 = 980,536.2
True or False? Mask mandates have been lifted on all college campuses. True False
Answer:
False
Explanation:
One atom has 11 protons and 13 neutrons. Another has 11 protons and 12 neutrons. Are they the same or different elements?
Answer:
deferent elements
Explanation:
because 11n 12 is not the same as well as13
Answer: They are the same elements
Explanation:
They're same elements because the number of electrons are same (number of protons=electrons).
The number neutrons don't matter.
If any two atoms have the same number of Electrons and protons and has different number of neutron's they still are the same element.
the weather patterns seen on earth are influence greatly by
Answer: The butterfly effect
Explanation:
If 20 mL of gas is subjected to a temperature change from 10°C to 100°C and a pressure change from 1 atm to 10 atm,
the new volume to the correct number of significant digits is:
O 3 ml
O 12mL
O 24 ml
O 13 ml
O none of these choices
Answer:
E. None of these
Explanation:
We know, By GAS laws,
PV = NRT, where p- pressure, v- volume, n- number of moles, R- gas constant ,and T- temperature
Now, In the question, the number of moles remains the same as the gas is the same. so n is constant so we can compare n before and after a temperature change.
[tex]\frac{P1V1}{RT1}[/tex] = [tex]\frac{P2V2}{RT2}[/tex]
where P1= 1 atm, P2 = 10 atm, V1= 20 mL, T1= 10°C and T2= 100°C
We don't have to worry about the standard units as they are present equally on both the sides and get cut, same goes for R( gas constant)
So putting values, we get
[tex]\frac{1*20}{R*10} = \frac{10*V2}{R*100}[/tex]
Cutting, R on both sides and moving contents to the right so that only V2 is left on the left.
[tex]\frac{1*20*100}{10*10} = V2[/tex]
∴ V2 = [tex]\frac{2000}{100}[/tex]
∴ V2 = 20mL
What weight (in grams) of h2so4 would be needed to make 750.0 ml of 2.00 m solution?
Answer:
I think the answer should be 147
Explanation:
NEED HELP ASAP!
What is the wavelength of a wave that has a frequency of 6.1 x 10^9 Hz? Remember that c = 2.998 x 10^8 m/s.
A.) 52m
B.) 5.2m
C.) 0.49m
D.) 0.049m
Answer:
speed = wavelength × frequency
wavelength = Speed/frequency
wavelength = 2.998 x 10^8 m/s ÷ 6.1 x 10^9 Hz
wavelength = 0.049m
Everything in the world is made of matter except you??
TrueFalse
Answer:
False.
Explanation:
Humans are made of matter too :)
question 2
metallic magnesium reacts with steam to produce magnesium hydroxide and hydrogen gas.
a. if 24.3 g mg are heated with 12.0 g h20, identify the limiting reactant - magnesium or water (steam)?
Explanation:
[tex]molar \: mass(mg) = 24g. {mol}^{ - 1} mass = 24.3g \\ molar \: mass(h20) = 18g. {mol}^{ - 1} mass = 12g \\ n = \frac{mass}{molar \: mass} \\ n(mg) = 1.01mol wich \: is \: substance \: a\\ n(h2o) = 0.67mol \: which \: is \: substance \: b \\ \frac{ |n|a }{ |n|b } : \frac{a}{b} \\ \frac{1.01}{0.67}: \frac{1}{2} \\ 1.51 > 0.50 \\ therefore \: substnce \: b \: which \: is \: water \: steam \: is \: limiting \: reagent [/tex]
What is the pH of a solution if the pOH is 7.09?
Answer:
pH = 6.91
Explanation:
Recall that at 25 °C, we have the relationship:
[tex]\displaystyle \text{pH} + \text{pOH} = 14.00[/tex]
Therefore, the pH of a solution with a pOH of 7.09 is:
[tex]\displaystyle \begin{aligned} \text{pH} + (7.09) & = 14.00 \\ \\ \text{pH} & = 6.91 \end{aligned}[/tex]
14
Select the correct answer.
The perihelion is the point at which Earth is closest to the Sun, and the aphelion is the point at which Earth is farthest away. Based on this
information, which statement is true?
O A. Earth moves faster along its orbit during perihelion because of the Sun's gravitational force.
O B. Perihelion marks the beginning of summer, when Earth is closest to the Sun.
• C
The longest day of the year occurs during perihelion due to a lunar eclipse.
© D. The Moon rotates faster during perihelion because of Earth's gravitational force.
Answer: B
Explanation: I know
Two different shaped containers have the same pressure, temperature and volume. What else must be true?
Answer:
n, the number of moles of gas is the same
Explanation:
PV = n RT if P and V and T and R are the same , the n must be the same
n = numer of moles
how many liters is 3.0 g of o2 gas
1 mole of any gas at standard temperature and pressure (273 K and 1 atm) occupies a volume of 22.4 L.
what is the molarity of liters of an aqueous solution that contains 0.50 mole of potassium iodide, KI
Answer:
The molarity of 2.0 liters of an aqueous solution that contains 0.50 mol of potassium iodide is 0.25M.HOW TO CALCULATE MOLARITY:The molarity of a solution can be calculated by dividing the number of moles by its volume. That is;Molarity = no. of moles ÷ volumeAccording to this question, 2.0 liters of an aqueous solution that contains 0.50 mol of potassium iodide. The molarity is calculated as follows:Molarity = 0.50mol ÷ 2LMolarity = 0.25MTherefore, the molarity of 2.0 liters of an aqueous solution that contains 0.50 mol of potassium iodide is 0.25M.Learn more about molarity at: brainly.com/question/2817451
Explanation:
Mark me brainliest please!!! I spent a lot of time on this!!
A gas occupies a volume of 140. mL at STP. What is the volume of the gas at 25°C and 3.00 atm
At STP
pressure is 1atmSo
Apply Boyles law
P1V1=P2V2140(3)=1V2420=V2V2=420mL
Burning a piece of wood in fire can be best described as a
Answer:
Chemical Change
Explanation:
A chemical change is when something is turned into a new substances.
In this example the wood is being turned into ash.
