Answer:
Because it devolved
Explanation:
The sugar can no longer be seen because upon solubilization;
A large collection of sugar molecules break into individual molecules and disperse in the water. Additionally, the lattices of the crystalline sugar has been broken, consequently, rendering the sugar soluble in water.Definition:
Solubility is characterized by the formation of new bonds between the solute molecules and solvent molecules.
In this case; the solute is sugar while the solvent is Water.
PS: The mixture formed from sugar and water is called Sugar syrup.
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Define international system of units , where does the system originate
Answer:
The International System of Units (SI) is originated in France by frenches and originally was called a metric system of measurements. It provides definitions of various units of measurement such as weight, distance, electric current, temperature, and others which is widely accepted in the different fields of science and technology.
It is the system that is extended and derived from the french metric system of measurement is accepted in 1960 by convention 44 nation of the world to use particular unit of measurement worldwide to avoid confusion.
How many moles of aluminum are equivalent to 4.816 x 1024 atoms?
Answer:
8 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{4.816 \times {10}^{24} }{6.02 \times {10}^{23} } = 8 \\ [/tex]
We have the final answer as
8 molesHope this helps you
Answer:
Explanation:
there are 8 moles.
which describes where fog forms
Answer:
It is A.
Explanation:
found at ground
hope this helps
7. Based on the conclusion in question 5, what type of leaves would be most beneficial for plants indigenous (native) to a desert?* O Wide leaves, with high surface area O Thin narrow leaves, with low surface area It wouldn't make a difference - any leaves will work in any area. PLEASE HElP ASAP PLEASEEEEEEE
Answer:
I don't know what question 5's conclusion is but if i were to take a guess here i would say wide leaves with a high surface area
Explanation:
to soak up water and maybe provide shade for the roots and dirt under the plant.
A stock solution of ammonia in water is 28 wt% NH3. The Formal Weight (FW) of NH3 is 17.03 g/mol). The solution density at room temperature is 0.90 g/mL. What is the molarity of the solution in units of mol/L
Answer:
[NH₃] = 14.7 mol/L
Explanation:
28 wt% is a type of concentration that indicates that 28 g of ammonia is contained in 100 g of solution.
Let's determine the amount of ammonia:
28 g . 1 mol / 17.03g = 1.64 moles of NH₃
You need to consider that, when you have density's data it is always referred to solution:
Mass of solution is 100 g, let's find out the volume
0.90 g/mL = 100 g /V
V = 100 g / 0.90mL/g → 111.1 mL
We convert the volume to L → 111.1 mL . 1 L/1000mL = 0.1111 L
mol/L = 1.64 mol/0.1111L → 14.7 M
mol/L = M → molarity a sort of concentration that indicates the moles of solute in 1L of solution
A pressure of 125,400 pa is equal to what kPa
Answer:
125.4 kilopascals
Explanation:
wkdje
Answer:
125,400 pa = 125.4 kPa
Explanation:
1 pa = 0.001 kPa
&
1 kPa = 1,000 pa
A mixture can be separated into simpler parts based on the components of the mixture's _____ properties.
volatile
reaction
physical
chemical
Answer:
Chemical is best answer
Explanation:
Mark me as brilliant and thank you
Please
Answer:
chemical is the answer
Explanation:
PLEASE HELP!! PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP’
LEWIS STRUCTURES CHEMISTRY!
Answer:
B is the answer because it doesn't matches the num of valence electrons
Answer:
No, because it doesn't match the total number of valence electrons.
Explanation:
The total valence electrons should be 10. But if you add all the valence electrons it gives you 12
gThe mole fraction of potassium nitrate in an aqueous solution is 0.0194. The solution's density is 1.0627 g/mL. What is the molarity of KNO in the solution
Answer:
0.595 M
Explanation:
The number of moles of water in 1L = 1000g/18g/mol = 55.6 moles of water.
Mole fraction = number of moles of KNO3/number of moles of KNO3 + number of moles of water
0.0194 = x/x + 55.6
0.0194(x + 55.6) = x
0.0194x + 1.08 = x
x - 0.0194x = 1.08
0.9806x= 1.08
x= 1.08/0.9806
x= 1.1 moles of KNO3
Mole fraction of water= 55.6/1.1 + 55.6 = 0.981
If
xA= mole fraction of solvent
xB= mole fraction of solute
nA= number of moles of solvent
nB = number of moles of solute
MA= molar mass of solvent
MB = molar mass of solute
d= density of solution
Molarity = xBd × 1000/xAMA ×xBMB
Molarity= 0.0194 × 1.0627 × 1000/0.981 × 18 × 0.0194×101
Molarity= 20.6/34.6
Molarity of KNO3= 0.595 M
A chemist adds 215.0mL of a 6.0x10^−5/mmolL mercury(II) iodide HgI2 solution to a reaction flask. Calculate the micromoles of mercury(II) iodide the chemist has added to the flask. Round your answer to 2 significant digits.
The micromoles of mercury(II) iodide : 0.013 μ moles
Further explanationGiven
215.0mL of a 6.0x10⁻⁵mmol/L HgI₂
Required
micromoles of HgI₂
Solution
Molarity(M) = moles of solute per liters of solution
Can be formulated :
M = n : V
n = moles
V = volume of solution
V = 215 mL = 0.215 L
so moles of solution :
n = M x V
n = 6.10 mmol/L x 0.215 L
n = 1.312 . 10⁻⁵ mmol
mmol = 10³ micromol
so 1.312 mmol = 1.312.10⁻⁵ x 10³ = 0.01312 micromoles ⇒ 2 sif fig = 0.013 μ moles
Plssssssssssssssss help me
Answer:
Answer is True
I hope its help for you
have a great day
Before the work of Albert Einstein and other prominent scientists of the early 1900's, the predominant view among
physicists was that light is:
Answer:
wave
Explanation:
What is the molecular formula of a compound with the empirical formula of CH2F and a gram formula mass of 66.0 g
Answer:
The molecular formula of the compound is C₂H₄F₂ or CH₃CHF₂
Explanation:
From the question given above, the following data were obtained:
Empirical formula of the compound = CH₂F
Fórmula mass of compound = 66 g/mol
Molecular formula of the compound =?
The molecular formula of the compound can be obtained as follow:
Molecular formula = [Empirical formula]ₙ
Molecular formula = [CH₂F]ₙ
[CH₂F]ₙ = 66
[12 + (2×1) + 19] n = 66
[12 + 2+ 19]n = 66
33n = 66
Divide both side by 33
n = 66/33
n = 2
Molecular formula = [CH₂F]ₙ
Molecular formula = [CH₂F]₂
Molecular formula = C₂H₄F₂
Thus, the molecular formula of the compound is C₂H₄F₂ or CH₃CHF₂
What is a spontaneous change?
A. One that occurs when one specific event happens.
B. One that occurs on its own.
C. One that has a random arrangement of particles.
D. One that has an ordered arrangement of particles.
Answer:B. One that occurs on its own
Explanation:
can u pls help me with this question
Answer:
I think the answer is b
Explanation:
the paragraph states, that it is an experiment to see if there is any oxygen in the water
What was a key discovery in the advancement me up early information transfer
Answer:
The transfer was essential to understand the mutation and the possibility of new, more resistant strains in microorganisms.
Explanation:
the transfer of microorganisms is based on the transfer of genetic data through conductive pathways that penetrate the membranes, called pili or genetic bridges.
These mutated genes with higher resistance are transmitted and resistance is generated in entire populations and even species.
What is the difference between electric current and static electricity?
Answer:
In static electricity the charges are at rest and they are accumulating on the surface of the insulator. Whereas in current electricity the electrons are moving inside the conductor.
Answer: Current electricity involves a flow of electrons; static electricity involves a single transfer of electrons.
Explanation:
hopes this helps
A drug is commercially available in capsules each containing 12.5 mg of drug and 37.5 mg of diluent. How many milligrams of additional diluent must be added to the contents of one capsule to make a dilution containing 0.5 mg of drug in each 100 mg of powder
Answer:
2450 mg
Explanation:
From the given information:
The total weight of the capsule = 12.5 mg + 37.5 mg
= 50 mg
The percentage of drug in each capsule = [tex]\dfrac{12.5}{50} \times 100[/tex]
= 25%
= 0.25
To make 0.5 mg of drug in each 100 mg of powder after dilution;
Then, the drug percent in each capsule after dilution is:
[tex]=\dfrac{0.5}{100}\times 100[/tex]
= 0.5%
= 0.005
Suppose (p) mg represent the amount that is added to the diluent in the given capsule. Then;
The total amount is = (50 + p) mg
Since the amount of the drug = 12.5 mg
Then the concentration [tex]=\dfrac{12.5}{50 + x}[/tex] which needs to be equal to the needed concentration that is diluted.
i.e.
[tex]\dfrac{12.5}{50 + x} = 0.005[/tex]
By cross multiply;
(50 + x) 0.005 = 12.5
(50 × 0.005) + (0.005x) = 12.5
0.25 + 0.005x = 12.5
0.005x = 12.5 - 0.25
0.005x = 12.25
x = 12.25 / 0.005
x = 2450 mg
Thus, there is a need for an additional 2450 mg to make a dilution that compass 0.5 mg of drug in 100 mg powder.
Which is the electron configuration of an atom in the ground state?
The atomic number of nitrogen is 7. The number of electrons a neutral nitrogen atom has is
, and its atomic mass is approximately
amu.
Answer:
The number of electron in neutral atom of nitrogen are 7.
Atomic mass = 14 amu
Explanation:
An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.
All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.
The number of electron in neutral atom of nitrogen are 7.
Thus its atomic number is also 7.
Atomic mass = number of proton + number of neutron
Atomic mass = 7 + 7
Atomic mass = 14 amu
You mix 55 mL of 1.00 M silver nitrate with 25 mL of 0.84 M sodium chloride. What mass of silver chloride should you form
Answer:
mass of silver chloride (AgCl) = 3.0135 grams
Explanation:
The chemical equation is:
[tex]AgNO_{3(aq)} + NaCl_{(aq)} \to AgCl_{(s)} + NaNo_3_{aq)}[/tex]
No. of mole = molarity × volume
For AgNO3:
No. of moles = 1.00 × 0.055
= 0.055 moles
No. of moles of NaCl = 0.84 × 0.025
= 0.021 moles
From the equation:
[tex]1 \ mol e \ of \ AgNO_3 \ react \ with \ 1 \ mole \ o f \ NaCl[/tex]
Therefore, 0.055 moles of AgNO3 react with 0.055 moles of NaCl
Here;
NaCl serves as the limiting reactant
Thus,
1 mole of NaCl will react with AgNO3 to yield 1 mole of AgCl
∴
0.021 moles of NaCl react with AgNO3 to yield 0.021 moles og AgCl
mass of AgCl = no of moles × molar mass
= 0.021 × 143.5
= 3.0135 grams
A 1.00-L flask was filled with 2.00 moles of gaseous and 2.00 moles of gaseous and heated. After equilibrium was reached, it was found that 1.21 moles of gaseous was present. Assume that the reaction
SO2 + NO2 ⇌ SO3 + NO
occurs under these conditions. Calculate the value of the equilibrium constant, K, for this reaction.
Answer:
2.35
Explanation:
A 1.00-L flask was filled with 2.00 moles of gaseous SO₂ and 2.00 moles of gaseous NO₂ and heated. After equilibrium was reached, it was found that 1.21 moles of gaseous NO was present. Assume that the reaction
SO₂ + NO₂ ⇌ SO₃ + NO
occurs under these conditions. Calculate the value of the equilibrium constant, K, for this reaction.
Step 1: Calculate the molar concentrations
Since the reaction takes place in a 1.00 L flask, the molar concentrations are:
[SO₂]i = 2.00 M
[NO₂]i = 2.00 M
[NO]eq = 1.21 M
Step 2: Make an ICE chart
SO₂ + NO₂ ⇌ SO₃ + NO
I 2.00 2.00 0 0
C -x -x +x +x
E 2.00-x 2.00-x x x
Step 3: Calculate the concentrations at equilibrium
The concentration of NO at equilibrium is 1.21 M. Then, x = 1.21.
[SO₂]eq = 2.00-1.21 = 0.79 M
[NO₂]eq = 2.00-1.21 = 0.79 M
[SO₃]eq = x = 1.21 M
[NO]eq = x = 1.21 M
Step 4: Calculate the value of the equilibrium constant, K, for this reaction
K = [SO₃] × [NO]/[SO₂] × [NO₂]
K = 1.21²/0.79² = 2.35
A sentence with the word atom
Answer:
we use atom in our sentences all the time
Explanation:
that what i put
What does a mountain ecosystem host?
A. one ecosystem with a variety of wildlife
B. one ecosystem with a variety of plants
C. three or more ecosystems which can’t host plant life
D. three or more distinct ecosystems
Answer: D.
Explanation: :)
Answer:
d
Explanation:
A stack of 15 pennies is immersed into a 100 mL graduate initially containing 20.6 mL of water. The volume in the graduate cylinder increases to 26.0 after the pennies are added. Calculate the volume in mL of the stack of 15 pennies
Answer: 5.4
Explanation: The Law of Impenetrability says that two objects can't occupy the same space at the same time; therefore, the pennies and the water can't occupy the same space at the same time. Without the pennies the water level read 20.6 mL, dropping in the pennies gives a level of 26.0.
A liquid, solid, or gas's volume is the amount of three-dimensional space it occupies. Volume in mL of the stack of 15 pennies is 26.0 mL.
What is volume?A liquid, solid, or gas's volume is the amount of three-dimensional space it occupies. Although there are many different units that may be used to indicate volume, the most common ones are litres, m³, gallons, milliliters, teaspoon, as well as ounces.
Due to the Law of Impenetrability, which states that two items cannot occupy the same place at the same time, neither can pennies nor water. When the pennies are added, the water level rises to 26.0 mL from 20.6 mL before.
Mass is the quantity of matter a material contains, whereas volume is indeed the space that it occupies. The density of a sample is the quantity of mass in a given volume.
Therefore, volume in mL of the stack of 15 pennies is 26.0 mL.
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what is the frequency,in Hz,of electromagnetic radiation that has a wavelength of 1.25m
Answer:
[tex]f=2x10^8Hz[/tex]
Explanation:
Hello!
In this case, given that frequency of the electromagnetic radiation showing off a wavelength of 1.25 m is computed by using the speed of light as shown below:
[tex]f=\frac{c}{\lambda }[/tex]
We plug in the wavelength and speed of light to obtain:
[tex]f=\frac{3x10^8m/s}{1.25m } \\\\f=2x10^8Hz[/tex]
Best regards!
The frequency will be "[tex]2\times 10^8 \ Hz[/tex]".
Electromagnetic radiation:Radiation which thus travels throughout waves as well as which has both electromagnetic energy.
The power of electromagnetic radiation could range from minimum to maximum. Radio waves, radiation, x-rays, and gamma radiation are all examples of electromagnetic radiation.
Given value:
Wavelength, [tex]\lambda = 1.25 \ m[/tex]
Speed of light, [tex]c = 3\times 10^8[/tex] m/s
The frequency be:
→ [tex]f = \frac{c}{v}[/tex]
By putting the values,
[tex]= \frac{3\times 10^8}{1.25}[/tex]
[tex]= 2\times 10^8[/tex] Hz
Thus the above response is right.
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What is the correct IUPAC name for S2F8?
Answer:
Question: What Is The Correct IUPAC Name For S2F8? X ( ( (I) (IV) Di- Mono- Penta- Tetra- Tri- Hepta- Octa- Hexa- Fluorine Selenide Flourate Sulfide Sodium Sulfate Sulfur Fluoride Hydrate Acid.
5. What does the symbol in the picture represent? *
A.Battery
B.Resistor
C.Wire
D.Bulb
can u pls help me with this question
Answer:
rare username has joined the meeting.
Explanation:
How many grams of magnesium
sulfate (MgSO4) are dissolved in
0.965 L of a 0.0575 M solution?
6.68 g MgSO₄
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Aqueous Solutions
Molarity = moles of solute / liters of solutionAtomic Structure
Reading a Periodic TableUsing Dimensional AnalysisExplanation:Step 1: Define
0.965 L
0.0575 M
Step 2: Identify Conversions
Molar Mass of Mg - 24.31 g/mol
Molar Mass of S - 32.07 g/mol
Molar Mass of O - 16.00 g/mol
Molar Mass of MgSO₄ - 24.31 + 32.07 + 4(16.00) = 120.38 g/mol
Step 3: Find MgSO₄
Substitute [M]: 0.0575 M = x / 0.965 LIsolate x: 0.055488 mol MgSO₄ = xRewrite: x = 0.055488 mol MgSO₄Step 4: Convert
[tex]\displaystyle 0.055488 \ mol \ MgSO_4(\frac{120.38 \ g \ MgSO_4}{1 \ mol \ MgSO_4} )[/tex] = 6.67959 g MgSO₄
Step 5: Check
We are given 3 sig figs as our lowest. Follow sig fig rules and round.
6.67959 g MgSO₄ ≈ 6.68 g MgSO₄
