The concentration of the solution reduces and the number of moles of solute isn't affected.
Data;
V1 = 50mLC1 = 12.0MV2 = 200mLC2 = ?Facts about the diluted solution1. When the solution is diluted, the concentration changes and this time, the concentration reduces.
Using dilution formula
[tex]c_1 v_1 = c_2 v_2\\12 * 50 = c_2 * 200\\c_2 = \frac{600}{200} \\c_2 = 3M[/tex]
The concentration of the solution reduces.
2. The number of moles remains the same.
When a solution is diluted, the number of moles remains the same because there's no change in the mass of the solute.
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One day you experience violent thunderstorms followed by a few days of colder weather.
Which type of front most likely moved through your area?
occluded front
stationary front
warm front
cold front
Answer: Cold front
Answer:
Cold front lol
Explanation:
Hopefully this helps :)
When the volume of a gas is changed from 1146 mL to 765 mL, the temperature will change from __ K to 640 K
Answer:
Explanation:
According to Charles rule,
[tex]\dfrac{V_{1}}{T_{1}}=\dfrac{V_{2}}{T_{2}}[/tex]
V₁ = initial volume = 1145 mL
V₂ = final volume = 765 mL & T₂ = final temperature = 640 K
[tex]\dfrac{1145}{T_{2}}=\dfrac{765}{640}\\\\\\Cross \multiply\\\\1145*640=T_{2}*765\\\\\dfrac{1145*640}{765}=T_{2}\\\\T_{2} = 957.9 \ K[/tex]
Oscar made a terrarium by filling a jar with some rocks, soil, plants, and water.
Oscar placed a grasshopper in the terrarium and then put a lid on the jar. From what source will the grasshopper receive enough oxygen to survive?
from the soil
from the soil
from the plants
from the plants
from the rocks
from the rocks
from the water
from the plants
Explanation:
bc plant produce 02
Which of the following is an example of a response to the stimulus of a dangerous predator?
A.
a skunk releases a pungent odor
B.
a bee makes honey
C.
a human stomach growls
D.
a tree's leaves change colors
Why are the waters of the North Atlantic, like the waters near coral reefs, murky green? 1. The color is caused by chlorophyll in the water.
2. The color is caused by the waste products given off by fish.
3. The color is caused by coral reefs in the area.
4. The color is caused by the lack of oxygen in the water
The waters of the North Atlantic are murky green because the color is caused by coral reefs in the area. That is option 4.
The effects of overgrowth of algaeThe excess nitrogen and phosphorus which is found in fertilizers can cause an overgrowth of algae in a short period of titme, when washed into water bodies. This is called algae blooms.
The effects of overgrowth of algae on aquatic bodies include the following:
reduce the ability of fish and other aquatic life to find food It causes thick, green muck that impacts clear water, recreation, businesses and property values.Therefore, the murky green color is caused by coral reefs in the area.
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Answer:
The waters of the North Atlantic are murky green because the color is caused by coral reefs in the area. That is option 4.
The effects of overgrowth of algae
The excess nitrogen and phosphorus which is found in fertilizers can cause an overgrowth of algae in a short period of titme, when washed into water bodies. This is called algae blooms.
The effects of overgrowth of algae on aquatic bodies include the following:
reduce the ability of fish and other aquatic life to find food
It causes thick, green muck that impacts clear water, recreation, businesses and property values.
Therefore, the murky green color is caused by coral reefs in the area.
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Explanation:
discuss whether glucose is a mixture of water and carbon dioxide or is it a new compound?
Answer:
SEE BELOW
Explanation:
Glucose (C6H12O6) is an organic compound composed of the elements carbon, hydrogen and oxygen.
At the same temperature, which of the following gases will have fastest rate of effusion?
-CO
-SF6
-Cl2
-HBr
According to Graham's law, CO, with the lowest molar mass, will have the fastest rate of effusion.
What is effusion?In physics and chemistry, effusion is the process in which a gas escapes from a container through a hole of diameter considerably smaller than the mean free path of the molecules.
According to Graham's law, the rate of effusion (r) is inversely proportional to the square root of the molar mass (M) of the gas.
r ∝ 1/√M
We have the following gases with the respective molar masses.
CO (28.01 g/mol)SF₆ (146.05 g/mol)Cl₂ (70.90 g/mol)HBr (80.91 g/mol)According to Graham's law, CO, with the lowest molar mass, will have the fastest rate of effusion.
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Explain how temperature and air pressure play a role in creating wind.
How temperature and air pressure play a role in creating wind.
Gases move from high-pressure areas to low-pressure areas. And the bigger the difference between the pressures, the faster the air will move from the high to the low pressure. That rush of air is the wind we experience.
hope it helps.
Aliyyah.
Winds are created by the change in temperature gradient which results in the difference in pressure causes the circulation of air from high pressure area to low pressure area that is called winds.
What is winds?Wind is the circulation or passage of air from one region to the other over a pressure gradient. The pressure gradient is resulting from the uneven heating of the atmosphere.
According to Gay- Lussac's law, the pressure of a gas is directly proportional to the temperature of the region. Thus as the temperature over an area increases pressure also increases.
The heat radiated from the sun is unevenly distributed in the earth atmosphere results in difference in pressure also. To balance this pressure difference, the air from high pressure region passes to low pressure region creating the winds.
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How to balance K+H20?
Answer: K + H2O = KOH + H2
Explanation:
Nitrogen gas at 20. °C in a balloon has a volume of 3.0 L and pressure of 1.5 atm. If the temperature of the balloon is increased to 30. °C and the pressure to 2.5 atm, what is the new volume of the balloon?
Answer:
In all the problems below, the pressure and the amount of gas are held constant. Problem #1: Calculate the decrease in temperature (in Celsius) when 2.00 L at 21.0 °C is compressed to 1.00 L. Converting 147.0 K to Celsius, we find -126.0 °C, for a total decrease of 147.0 °C, from 21.0 °C to -126.0 °C.
Answer:
1.9L
Explanation:
edg 2023 chemistry A
When 200.0 mL of a 0.125 M sodium hydroxide is combined with 400.0 mL of a 0.025 M solution of magnesium nitrate, what is the percent yield if 0.45 g of precipitate is isolated?
Answer:
Explanation:
Balanced equation :
2NaOH (aq) + Mg(NO3)2 (aq) → Mg(OH)2(s) + 2NaNO3(aq)
2 mole NaOH reacts with 1 mole Mg(NO3)2 to produce 1 mole Mg(OH)2.
Check for limiting reactant :
Mol NaOH in 200.0 mL of 0.125 M solution
Mol = 0.125 mol/L * 200 mL / 1000 mL/L = 0.025 mol
This will react with 0.025 / 2 = 0.0125 mol Mg(NO3)2
Mol Mg(NO3)2 in 400 mL of 0.025 M solution
= 400 mL / 1000 mL/L * 0.025 mol /L = 0.01 mol Mg(NO3)2
The NaOH is in excess and the limiting reactant is Mg(NO3)2
0.01 mol Mg(NO3)2 will produce 0.01 mol Mg(OH)2
Molar mass Mg(OH)2 = 58.32 g/mol
Mass of 0.01 mol Mg(OH)2 = 0.01mol * 58.32 g/mol = 0.5832 g
Product isolated was 0.45 g
Percent yield = Product / Reactant * 100%
= 0.45 / 0.5832 * 100%
= 77.16% yield.
Balance the following chemical equation (if necessary):
Answer:
1 [tex]C_{3}H_{6}O_{2}[/tex] (g) + 6 [tex]O_{2}[/tex] (g) → 3 [tex]H_{2}O[/tex] (g) + 3 [tex]CO_{2}[/tex] (g)
1 mole of Cl2 will produce how many atoms of KCl?
Answer:
1.1 mole
Explanation:
The mass of potassium chloride is 3.8 g . Look at the mole ratio you have between potassium chlorate and potassium chloride; what you will see is that every 2 moles of potassium chlorate will produce 2 moles of potassium chloride, i.e. you have a 1:1 mole ratio between the two compounds
In one to two sentences, explain why metal is often used for making wire and the properties that make metal useful. (Will give 15 points for answer:,))
Answer:
Metal is used in the making of wire because of its high conductivity. Metals are also ductile, so the making of wire is easy with metal.
13.41g of Fe(NO3)2 is dissolved in 83.0mL of water. Calculate the molarity of the solution.
Answer:
whats the question in this
Explanation:
Balance the equation: ___Li3N + ___NH4NO3 -> ___LiNO3 + ___ (NH4)3N
What type of reaction is the one above?
Answer: Li3N + 3NH4NO ---> 3LiNO3 + (NH4)3N
Explanation: Above is a double displacement/replacement reaction since two compound are sought as displacing.
Hope this helps!
How many atoms are in 3.5 L of Neon at STP?
Answer:
This is the answer to the question 0.1734
Explanation:
3.5/20.18
=0.1734
What's the difference between a conductor and an insulator?
I'll mark you as brainliest
I don't really think what this question about
Answer:
A single time the hail stone was drafted up and down in the atmosphere
Explanation:
The element least likely to obey the octet rule in forming chemical bonds is
Answer:
The two elements that most commonly fail to complete an octet are boron and aluminum; they both readily form compounds in which they have six valence electrons, rather than the usual eight predicted by the octet rule.
I think it will help you.
The SI unit of pressure is the _______.
how do carbon and silicon differ with regard to the types of orbital available for hybridization?
A 35.3 g of element M is reacted with nitrogen to produce 43.5 g of compound M3N2 What is (i) the molar mass of the element and (ii) name of the element?
This problem is providing us with the mass of an unknown element which produces 43.5 g of M3N2. Thus, its name and molar mass are required and found to be 4.02 g/mol and calcium nitride after the following:
Stoichiometry.In chemistry, stoichiometry is a tool used for the calculation of masses or moles involved in chemical reactions, by the utilization of molar masses and mole ratios based on proportional factors.
In such a way, for the given reaction, one can use the formulas to write the following balanced chemical equation:
[tex]3M+N_2\rightarrow M_3N_2[/tex]
Where there is a 3:1 mole ratio of the metal to the product, which means we can use the following stoichiometric setup:
[tex]35.3gM*\frac{1molM}{x}*\frac{1molM_3N_2}{3molM} *\frac{(3x+14.01*2)gM_3N_2}{1molM_3N_2}=43.5gM_3N_2[/tex]
Now, by using the numbers only, one will be able to calculate x as the atomic mass of the element M in g/mol:
[tex]35.3*\frac{1}{x}*\frac{1}{3} *\frac{3x+14.01*2}{1}=43.5\\\\\frac{105.9x+989.106}{3x}=43.5\\ \\105.9x+989.106=130.5x\\\\989.106=130.5x-105.9x\\\\x=\frac{989.106}{130.5-105.9} =40.2g/mol[/tex]
Which matches with the molar mass of calcium. Moreover, we find its name as calcium nitride.
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How does an atom become a positively charged lon?
A. by gaining one or more electrons
B. by gaining one or more neutrons
C. by losing one or more electrons
D. by losing one or more neutrons
Answer:
by losing one or more electrons*
Pick a "for every" statement about copper and silver nitrate for this reaction.
A For every 1 mole of copper, the reaction uses 2 moles of silver nitrate.
B For every 1 mole of copper, the reaction makes 2 moles of silver nitrate.
C For every 1 mole of copper, the reaction uses 3 moles of silver nitrate.
D For every 1 mole of copper, the reaction uses 1 moles of silver nitrate.
From the equation of the reaction; for every 1 mole of copper, the reaction uses 2 moles of silver nitrate.
What is a reaction?A chemical reaction involves the transformation of one chemical specie into another. The reaction is not shown here hence the question is incomplete.
However, the reaction should be of the sort; Cu + 2AgNO3 ---> Cu(NO3)2 + Cu. Thus, for every 1 mole of copper, the reaction uses 2 moles of silver nitrate.
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in case you know the solution ~
kindly don't spam !
[tex]\\[/tex]
Answer: -1323 kJ mol^-1
Explanation:
[tex]\begin{aligned}&\mathrm{C}_{2} \mathrm{H}_{4(\mathrm{~g})}+3 \mathrm{O}_{2(g)} \longrightarrow 2 \mathrm{CO}_{2(g)}+2 \mathrm{H}_{2} \mathrm{O}_{(1)} \quad \Delta \mathrm{H}=? \\&\Delta \mathrm{H}=\left(\sum \Delta \mathrm{Hf} \text { products }\right)-\left(\sum \Delta \mathrm{Hf} \text { Reac tan ts }\right) \\&\Rightarrow[(2 \times-393.7)+(2 \times-241.8)]-[(52.3+0)] \\&\Rightarrow[-787.4 - 483.6]-52 \\&\Rightarrow-1323 \mathrm{~kJ} \mathrm{~mol}^{-1}\end{aligned}[/tex]
The enthalpy of combustion for the burning of ethylene is -1323.33 kJ/mol
What is combustion?The term combustion has to do with the burning of a particular substance in oxygen. In this case, the equation of the reaction is;
C2H4 + 3O2 ----->2CO2 + 2H2O
The enthalpy of combustion can be obtained from the relation;
ΔH rxn = [(2(-393.7) + 2(-241.8)] - [(52.3 + 3(0)]
ΔH rxn = (-787.4) + (-483.6) - 52.3
ΔH rxn = -1323.33 kJ/mol
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If 4.5 kJ of energy is added to 100 g of copper at 100ºC, what is the final temperature in degrees Celsius?
Answer:
215 [C°].
Explanation:
1) if the given energy is Q, the initial temperature is t₀, the final temperature is t, then
2) Q=cm(t-t₀);
[tex]t=\frac{Q}{cm}+t_0;[/tex]
3) according to the formula above:
[tex]t=\frac{4500}{0.39*100}+100=215.[/tex]
Dale marc is a 16-years -old stident. he lives in taal,batangas,together with his family. fishing is their primary source of income. they found out that the taal volcano had erupted in taal batangas. what are the possible effects / of this condition on thier condition on their family, and what advice are you going to give him?
The possible effects of this condition on the family is adverse because they can't do fishing due to eruption.
Effects of volcanic eruption on fishing
Aquatic life can be affected due to volcanic eruption due to increase in acidity, change in temperature, and change in food supply. These factors can damage and also kill fish so this eruption has adverse effect on the family's economic condition and my advice is to them to change their place of living and settle in other unaffected area.
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How many moles are in 15g of Na2CO3?
Answer:
105.98844
Explanation:
What is kwestrong? I- ready reading
Kwestrong is an Ojibwe event in which women of all ages run, bike and canoe to test their strength and endurance.
What is Kwestrong?Kwestrong is an Ojibwe event that means "strong woman." It is an organization formed by Native women that fosters companionship while also building strength and endurance.
Kwestrong goal is about Native Women empowering and motivating one another to achieve their own fitness goals.
Therefore, we can conclude that, Kwestrong is an Ojibwe event in which women of all ages run, bike and canoe to test their strength and endurance.
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