Answer:
Potassium is the answer
how are molarity and volume related
these are the options
A They are directly related.
B They are inversely related.
C They are different units of dilution.
D They are different units of concentration.
Answer:
Molarity can be used to calculate the volume of solvent or the amount of solute. The relationship between two solutions with the same amount of moles of solute can be represented by the formula c1V1 = c2V2, where c is concentration and V is volume.
The relationship between Molarity and volume of a solution is : ( B ) They are inversely related
What is molarity ?Molarity is the number of moles of solute in unit of volume of the solution ( usually per liter ). Molarity is calculated by dividing the number of moles of a solute ( n ) by the volume of the solution.
Molarity = n / v .
Therefore we can conclude that the relationship between Molarity and volume is that they are inversely related.
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Someone help me am i right or wrong
Answer:
You right!
Explanation:
Answer: Yes your right
Pls answer ill give brainliest question in picture
Answer: A & D
Explanation:
The two main forces are temperature and salinity.
What would a chemist likely study about a car?
A) The amount of rotations of the wheel that occur in 1 mile.
B) The reaction of gasoline combustion in the engine.
C) The accuracy of the speedometer.
D) The strength of the car frame.
Answer
b b b b b b b b b b b b b b b
Explanation:
What is the state symbol of oxygen at room temperature
Answer: Oxygen is a gas at room temperature.
Both potassium chloride and calcium carbonate are white solids. Give two tests you would use to distinguish them.
Answer:
Potassium carbonate is soluble in water, while calcium carbonate is insoluble. Weigh a sample of the unknown mixture accurately and stir the sample with water. Filter the suspension and find out the mass of the residue collected. It gives the amount of insoluble calcium carbonate present in the mixture.
Explanation:
What does fr stand for on the periodic table
Answer:
"Francium"
Explanation:
"Francium" is a chemical element with the symbol "Fr" and the atomic number "87". Classified as an "alkali metal", Francium is a solid at room temperature.
Atomic Mass: "223.01973u"
Year Discovered: "1939"
Which of the following elements is used to make metal products?
oxygen
potassium
calcium
iron
Its Iron and Potassium because if you look at the periodic table,and you go down the list of metals, you can see what metals are there.
what pressure must be applied to compress a gas from 85 L at 3.5 atm to 15 L? a-17.3atm b-24.7atm c-19.8atm d-21.4atm
what would be the formula for ethane?
Answer:
C₂H₆
Explanation:
The formula for ethane is C₂H₆
What is 25 Ml into L
Answer:
0.025 liters
Explanation:
divide 25 into 1000
Answer:
25 mL = 0.025 L
Explanation:
edge 2023
200 + O2 → 2CO2
How many moles of CO2 of carbon dioxide are produced from 10 moles of carbon monoxide (CO)?
ANSWER 10 MOLES OF CARBON DIOXIDE
2C0 + O2 → 2CO2
2 moles of carbon monoxide forming 2 moles of carbon dioxide
10 moles of carbon monoxide will form 10 moles of carbon dioxide
How many grams H2 are needed to react with 2.80 g of N2?
Answer:
N2 +3 H2 → 2 NH3
so we have 2180 g of N2
or 2.80 g ÷ 28.02 g/mol = 0.100 mol
1 mol of N2 react with 3 moles of H2
Therefore 0.100 mol of N2 react with 0.3 moles of H2
0.300 mol X Molar mass (2.00 g/mol) = 0.600 g
0.600 g of H[tex]_2[/tex] are needed to react with 2.80 g of N[tex]_2[/tex]. Mole is one of the International System for Units' seven foundation units (SI).
What is mole?A mole is just a measuring scale. In reality, it is one of the International System for Units' seven foundation units (SI). When already-existing units are insufficient, new ones are created. Using absolute amounts of atoms, molecules, or ions would be problematic as well since chemical reactions frequently occur at levels that use grams would be inappropriate.
A mole consists of precisely 6.022140761023 particles. The "particles" might be anything, from tiny things like electrons and atoms to enormous things like stars or elephants.
N[tex]_2[/tex] +3 H[tex]_2[/tex] → 2 NH[tex]_3[/tex]
2.80 g ÷ 28.02 g/mol = 0.100 mol of N[tex]_2[/tex]
1 mol of N[tex]_2[/tex] react with 3 moles of H[tex]_2[/tex]
0.100 mol of N[tex]_2[/tex] react with 0.3 moles of H[tex]_2[/tex]
0.300 mol X Molar mass (2.00 g/mol) = 0.600 g of H[tex]_2[/tex]
Therefore, 0.600 g of H[tex]_2[/tex] are needed to react with 2.80 g of N[tex]_2[/tex].
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what is the hardest metal?
1. Cesium
2. Titanium
3. Chromium
4. Magnesium
Quickly please!
Answer:
i believe it is titanium.
Explanation:
Answer:
2. Chromium
Explanation:
How many molecules of HCl are needed to react with 1.7 moles of magnesium. The products of
the reaction are magnesium chloride and hydrogen gas.
2HCl + Mg --> MgCl2 + H2
(pls help)
Answer:
2.05 x 10²⁴ molecules
Explanation:
The balanced equation for the chemical reaction is the following:
2 HCl + Mg → MgCl₂ + H₂
According to the equation, 2 moles of HCl are required to react with 1 mol of magnesium (Mg), so the moles of HCl required to react with 1.7 mol Mg are calculated as follows:
moles HCl = 1.7 mol Mg x 2 mol HCl/mol Mg = 3.4 mol HCl
We know that 1 mol of any compound is equal to 6.022 x 10²³ molecular entities, so we convert the moles of HCl to molecules as follows:
molecules HCl = 3.4 mol HCl x 6.022 x 10²³ molecules/1 mol = 2.05 x 10²⁴ molecules
Which solution has the highest electrical conductivity? Explain why.
a) 0.1 M of H2S
b) 0.1 M of HNO2
c) 0.1 M of H2SO3
d) 0.1 M of NH4Cl
Answer:
Given solutions are:
a) 0.1 M of H2S
b) 0.1 M of HNO2
c) 0.1 M of H2SO3
d) 0.1 M of NH4Cl
Explanation:
The electrical conductivity of a solution is directly proportional to the number of ions present in it.
All the given solutions have the same concentration.
But on dissociation, each solution produces a different number of ions as shown below:
[tex]H{2} S ->HS^{-}+H^{+}[/tex]
2 ions per molecule.
[tex]HNO{2} -> H^{+} + NO{2}^{-}[/tex]
2 ions per molecule.
[tex]H2SO3 -> 2H^{+} +SO{3} ^{2-}[/tex]
3 ions per molecule.
[tex]NH{4}Cl -> NH{4}^{+} + Cl^{-}[/tex]
2 ions per molecule.
Answer:
0.1M H2SO3 has high electrical conductivity.
Explain if the combination of iron and copper sulfate is an example of a chemical reaction. Use evidence and scientific reasoning to support your answer.
What percentage of the total atomic mass of magnesium bromide (MgBr2) is composed of bromine? Hint - consider the mass of both atoms of bromine in your calculation. A.43% B.87% C.13% D.63%
What volume will 8.47 kg of sulfur dioxide gas occupy at a pressure of 89.4 kPa and a temperature
of 40.0 °C?
Answer:
let me know if it is right:)
and I hope it make sense
what Element has a -4 oxidation number.
seperate red and blue ink plzz answer this
HELP PLS AND THANK U FAST PLS <3
Answer:
dragon fly larvae, beetles, fish, pelican
Explanation:
how are the environment of a desert and a tundra different
A: A tundra is at a higher latitude than a desert
B: A tundra is less humid than a desert
C: A tundra is much humid than a desert
D: A tundra receives less precipitation than a desert
<FIRST ANSWER>
The answer is A; tundra is at a higher latitude than a desert
Explanation:
Both a tundra and a desert are very dry, so that eliminates B and C.
And as for D, Tundra receives more rain than a desert does, so that eliminates D.
How many atoms of hydrogen are present in a container of water if you have 1.50 x 1023 atoms of oxygen present?
Answer:
3.00 × 10²³ atoms H
Explanation:
Step 1: Given data
Atoms of oxygen in water: 1.50 × 10²³ atomsChemical formula of water: H₂OStep 2: Calculate the number of atoms of hydrogen
According to the chemical formula of water, the atom ratio of H to O is 2:1.
1.50 × 10²³ atoms O × 2 atoms H/1 atom O = 3.00 × 10²³ atoms H
a gas mixture containing hydrogen, oxygen, and nitrogen has a total pressure of 840 torr. if p hydrogen = 320 torr and p oxygen = 485 torr, what is the partial pressure of nitrogen in the mixture? please help
Answer
35 torr
Explanation:
The mixture contains 320 torr of hydrogen, 485 torr of oxygen, a total pressure of 840 torr, so you need to find the leftover
320(hydrogen) + 485(oxygen) = 805 torr
840(total) - 805 = 35 torr
What is Williamson's synthesis?
Answer:
The name of the reaction was coined after Alexander William Williamson developed it in 1850.Williamson Ether Synthesis is a reaction that uses deprotonated alcohol and an organohalide to form an ether. 1. Williamson Ether Synthesis usually takes place as an SN2 reaction of a primary alkyl halide with an alkoxide ion.
Explanation:
yeah
What is the strongest force that exists between molecules of nitrogen
monoxide (NO)?
Answer:
Hydrogen Bonding (H-Bonding)
Which characteristic of water helps it form droplets? (5 points)
A. Low specific heat
B. Nonpolar structure
C. High surface tension
D. Ability to dissolve substances
Answer:
Surface tension causes water to form spherical droplets and allows it to support small objects, like a scrap of paper or a needle, if they are placed carefully on its surface.
>3
High surface tension is the characteristic of water which helps it form droplets.
What is Cohesion of water ?It is the attractive force between the water molecules. Cohesion is the property of water that explains that how water molecules interact with each other that means water likes to stick to itself.
Now lets check all options one by one:
Option (A): Low specific heat
Water has high specific heat due to the hydrogen bonding.
So, it is incorrect option.
Option (B): Non polar structure
Water molecule is polar covalent molecule because of its shape. The shape of the water molecule is bent.
So, it is incorrect option.
Option (C): High surface tension
Stronger the cohesion force then stronger the surface tension. It is responsible for the shape of the liquid droplets.
So, it is correct option.
Option (D): Ability to dissolve substance
It has ability to form hydrogen bond which makes an water a good solvent. Water is universal solvent.
So, it is incorrect option.
Thus, from above conclusion we can say that High surface tension is the characteristic of water which helps it form droplets.
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If 11 kJ of heat is transferred to 2300 g of soil at 21°C, what would the new temperature of the soil be?
Answer:
26.98°C
Explanation:
Applying,
Q = cm(t₂-t₁)................ Equation 1
Where Q = Heat transferred to the soil, c = specific heat capacity of dry soil, m = mass of the soil, t₂ = final temperature, t₁ = initial temperature.
From the question,
Given: Q = 11 kJ = 11000 J, m = 2300 g = 2.3 kg, t₁ = 21°C
Constant: c = 800 J/kg.°C
Substitute these values into equation 1
11000 = 800×2.3(t₂-21)
Solving for t₂
t₂-21 = 11000/(800×2.3)
t₂-21 = 11000/1840
t₂-21 = 5.98
t₂ = 5.98+21
t₂ = 26.98°C
How many molecules are in 4 moles of carbon monoxide (CO)?
Select one:
a. 2.41x1024 CO molecules
b. 24.1x1023 CO molecules
c. 6.64x1024 CO molecules
d. 1.51x1023 CO molecules
Answer:
A
Explanation:
because number of particle = moles × 6.02 × 10^23
which gives the answer as an A
2.41x10²⁴ molecules are in 4 moles of carbon monoxide (CO). Therefore, the correct option is option A.
What is molecule?The smallest recognizable unit into that a pure substance may be divided while retaining its composition as well as chemical properties is a molecule, which is a collection of atoms that are at least two in number. Until parts made up of a single molecule are reached, the division of an example of a substance smaller progressively smaller parts does not result in a change with regard to its composition nor its chemical properties.
Still smaller sections of the substance are produced by further subdivision, and these components are always different chemically and typically have different compositions from the initial substance. The chemical links that link the atoms in the molecule together are severed during this final step of fragmentation.
molecules = moles × 6.022×10²³
= 2.41x10²⁴
Therefore, the correct option is option A.
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