Answer:
Explanation:
NaCl = Na⁺ + Cl⁻
6120 ions of NaCl will contain 3060 ions of Na⁺ and 3060 ions of Cl⁻ , forming 3060 molecules of NaCl .
6.02 x 10²³ molecules of NaCl = 1 mole
3060 molecules of NaCl = 3060 x 10⁻²³ / 6.02 moles
= 508.30 x 10⁻²³ moles
= 5.08 x 10⁻²¹ moles
Answer : 5.08E-21 moles .
I never see anyone with this question
Answer:
i cant see the pic
Explanation:
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Identify whether each of the following pairs of compounds are enantiomers or diastereomers: they are diastereomers they are enantiomers they are neither enantiomers nor diastereomers they are enantiomers they are diastereomers they are neither enantiomers nor diastereomers they are neither enantiomers nor diastereomers they are diastereomers they are enantiomers they are enantiomers they are diastereomers they are neither enantiomers nor diastereomers they are enantiomers they are diastereomers they are neither enantiomers nor diastereomers they are enantiomers they are diastereomers they are neither enantiom
Hello. You did not show the pairs of compounds to which the question refers, which makes it impossible for them to be classified as enantiomers or diastereomers. However, I will try to help you in the best possible way.
To find out if the compounds are enantiomers or diastereomers, you must evaluate their structure in relation to each other. This is because enantiomers, will be the pairs of compounds that have very similar structures, reaching the point of looking like mirrored structures of each other, but they cannot overlap. On the other hand, diastereomers are neither able to overlap, nor have such similar structures.
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CH3CH2CH2CH2CH3
Balanced chemical equation for this
Answer:
C5H12 + 8O2 --> 5CO2 + 6H2O
Explanation:
Complete question
Write a balanced chemical equation to represent the combustion of CH3CH2CH2CH2CH3
Solution
The given compound is pentane
C5H12
The empirical equation representing combustion of pentane is
C5H12 + O2 --> CO2 + H2O
We will first balance the carbon atoms
C5H12 + O2 --> 5CO2 + H2O
Now we will balance the Hydrogen molecule
C5H12 + O2 --> 5CO2 + 6H2O
Now we will balance the oxygen molecule
C5H12 + 8O2 --> 5CO2 + 6H2O
10.7g of C2H2 --> g CO2
1. List down the steps to determine the grams (g) of CO2 produced from the reaction of 10.7g of C2H2.
Describe the steps in complete sentences
Answer:
http://www.khalidshadid.com/uploads/3/9/2/0/3920808/raymond_chang-chemistry_10th_edition.pdf
Explanation:
http://www.khalidshadid.com/uploads/3/9/2/0/3920808/raymond_chang-chemistry_10th_edition.pdf
For the balanced equation shown below, what would be the limiting reagent if 93.9grams
of C2H3F were reacted with 254grams of O2?
4C2H3F + 1102 ---> 8C02 + 6H2O + 2F2
A. C2H3F
B. 02
C. CO2
D. F2
Answer: A. C2H3F
Explanation:
Please help ASAP need this as last question.
would the power generated by Hydro power Cover the requirements for the state of Mississippi.
To prepare for a laboratory?
Answer:
You have to prepare for the lab (Materials, work, paper etc.)
Set up the lab know where the lab will be taking place
Read thru the experiment before doing the lab
Make a hypothesis
Write down notes, observations, measures anything important to help with the lab!
which of these salts is more soluble? sodium chloride or calcium carbonate?
Answer:
Sodium Carbonate is more soluble.
Explanation:
chlorine take longer to dissolve
Answer:
Sodium Chloride
Explanation:
Sodium Chloride is salt and we can tell that salt is more soluble than calcium chloride as it is used for making cast for fractures
The rate constant for a particular zero-order reaction is 0.075 M s-1. If the initial concentration of reactant is 0.537 M it takes ________ s for the concentration to decrease to 0.100 M.
Answer:
It takes 5.83s to decrease the concentration of the reactant from 0.537M to 0.100M
Explanation:
A zero-order reaction follows the equation:
[A] = [A]₀ - kt
Where [A] is actual reaction of the reactant = 0.100M
[A]₀ the initial concentration = 0.537M
k is rate constant = 0.075Ms⁻¹
And t is time it takes:
0.100M = 0.537M -0.075Ms⁻¹t
-0.437M = -0.075Ms⁻¹t
5.83s = t
It takes 5.83s to decrease the concentration of the reactant from 0.537M to 0.100M
Which property can be altered by a physical change?
A. composition
B. melting point
C. appearance
D. density
Answer:
appearance
( C)
hope you like?!!
Answer: C, appearance
Explanation: Gradpoint
What do you think air would
look like if you could zoom in and see its
structure and composition
Answer:
clouds
Explanation:
Why is n-hexanol is not soluble in H2O
Answer:
Ethanol is soluble in water because it has a hydroxyl group which allows it to form hydrogen bonds with the water molecules. This is why hexanol is not soluble in water.
What was the main purpose of the opportunity rover?
Answer:
Explanation:The major goals of the two rovers, according to NASA, were to determine whether life as we know it could ever have arisen on Mars (focusing particularly on searching for ancient water) and characterizing the climate and geology of
Answer:
The major goals of the two rovers, according to NASA, were to determine whether life as we know it could ever have arisen on Mars (focusing particularly on searching for ancient water) and characterizing the climate and geology of the planet
Sublimation occurs when moving from
1) G to H.
2) I to J.
3) J to I.
4) I to H.
1. Huntington’s disease is a dominant allele (not sex linked) that usually does not manifest itself until after age thirty- five. Individual who have the disease are almost always heterozygous. As a genetics counselor, you are visited by a 23-year-old woman. Her mother has Huntigton’s, but her father is normal. Use alphabets when required.
a. What is the genotype of the mother?
b. What is the genotype of the father?
c. What is the probability that this woman will develop Huntington’s disease as she grows older ?
WHO KNOWS HOW TO DO THIS
Answer:
a the mother is heterozygous so Aa
b would be aa
c. 50% as she could either get the dominant allele from her mother or not it is a coin flip
Explanation:for c the best way to do that one is to draw a punnitt square
What is the volume of a 0.1 M HCl solution containing 1.46 moles of HCI?
How many moles are in 9.20x10^20 molecules of water (H2O)?
Please and thank you :)!!!
Answer:
1.53 * 10^-3 moles of H20
Explanation:
I see that you're using the factor-label method, so if you want to convert a number into another number, let's start with the first number.
We have 9.20 * 10^20 molecules of water.
6.02 * 10^23 particles or molecules of water is 1 mole
If we want moles, we can write it like this
9.20 * 10^20 molecules of H20 | 1 mole of H20
| 6.02 * 10^23 molecules of H20
= 1.53 * 10^-3 moles of H20
Briefly explain why the atoms of Carbon and Nitrogen have the same mass of 14
Answer:
Explanation:
Atoms of an element with the same mass number make up an isotope of the element. Different isotopes of the same element cannot have the same mass number, but isotopes of different elements often do have the same mass number, e.g., carbon-14 (6 protons and 8 neutrons) and nitrogen-14 (7 protons and 7 neutrons).
Answer: NO I know sorry
Hey....Tell me
What is the molecular weight of carbon dioxide??
follow me....
Answer:
44 g/mol
Explanation:
how did Simard conduct her experiments
Answer:
Simard planted paper birch, fir, and cedar trees in a plot and then injected them with different radioactive isotope carbon dioxide gases and covered them with bags. She waited an hour, then checked the trees for radiation.
What is the volume of 1g of ice in cm3?
Answer:
What is the volume of 1g of ice in cm3?
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Explanation:
PLEASE HELP ME!! DIMENSIONAL ANALYSIS
CHEMISTRY
DUE IN 5 MINS!!!
Answer:
12 mi/h
Explanation:
Step 1: Given data
Total distance (d): 6 kmTime elapsed (t): 19 minStep 2: Convert "d" to miles
We will use the conversion factor 1 mi = 1.60934 km.
6 km × 1 mi/1.60934 km = 3.7 mi
Step 3: Convert "t" to hours
We will use the conversion factor 1 h = 60 min.
19 min × 1 h/60 min = 0.32 h
Step 4: Calculate the average speed of the runner (s)
The speed is equal to the quotient between the total distance and the time elapsed.
s = d/t
s = 3.7 mi/0.32 h = 12 mi/h
reativity of alkali metals increases down the group while reativity decreases down the group in helogens
Complete question is;
Chemical reactivity of alkali metals increases down the group while reactivity of halogens decreases down the group. Give reasons
Answer:
Explained below
Explanation:
Alkali metals exhibit reactivity due to their electropositivity. Now, for alkalis, their electro-positivity increases down their group. Since their reactivity increases with increase in electropositivity, it means their reactivity also increases down the group.
Whereas, the reactivity of halogens occurs as a result of their electronegativity. Now, electronegativity for halogens decreases down the group. Since their reactivity decreases with decrease in electronegativity, it means that their reactivity will also decrease down the group.
If 1.23 g of chlorine gas dissolves in
0.95 L of water at 15.6 psi, at what
pressure (in psi) would you be able
to dissolve 1.89 g in the same
amount of water?
Answer:
24 PSI
Explanation:
The concept Henry's law is used here to determine the pressure at which 1.89 g of chlorine gas is dissolved in the same amount of water. The pressure is 24.0 psi.
What is Henry's law?Henry's law states that at constant temperature the solubility of a gas in a liquid is directly proportional to the pressure of the gas in equilibrium with the solution. The solubility of a gas in a particular solvent is mainly expressed in terms of Henry's law.
The equation of Henry's law is given as:
c = KH . p
Here c is the solubility of the gas, p is the partial pressure and KH is the Henry's constant.
Here only the amount of chlorine gas to dissolve changes. For two different grams of chlorine gas, the equation is:
c ₁ /p ₁ = c ₂ / p ₂
1.23 / 15.6 = 1.89 / P₂
P₂ = 24.0 psi
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2Na + Cl2 → 2NaCI
How many grams of NaCl will be produced from 33.0 g of Na and 34.0 g of Cl.?
Answer:
56.0 grams NaCl
Explanation:
First, determine the limiting reactant by converting either one of the reactants' available quantities into the other reactant using the balanced equation. I picked 33.0 g Na:
33.0 g Na x 1 mol Na/22.99 g Na = 1.435 mol Na
1.435 mol Na x 1 mol Cl2/2 mol Na = 0.718 mol Cl2
0.718 mol Cl2 x 70.906 g Cl2/1 mol Cl2 = 50.89 g Cl2
As we can see, we only have 34.0 g of Cl2 to react with, though 33.0 g of Na can react with 50.89 g of Cl2. This means that Cl2 is our limiting reactant.
Now we can work off of the limiting reactant and stoichiometrically determine the grams of NaCl produced:
34.0 g Cl2 x 1 mol Cl2/70.906 g Cl2 = 0.4795 mol Cl2
0.4795 mol Cl2 x 2 mol NaCl/1 mol Cl2 = 0.9590 mol NaCl
0.9590 mol NaCl x 58.44 g NaCl/1 mol NaCl = 56.04 g NaCl
Round 56.04 g NaCl to three significant figures -> 56.0 g NaCl
The amount 56 gram of NaCl will be produced from 33.0 g of Na and 34.0 g of Cl.
What is gram?The gram is defined as the mass of one cubic centimeter of pure water at 4 degrees Celsius
Calculation of amount of NaCl.
The given reaction is 2Na + Cl2 → 2NaCI.
Mass of Na = 33 gram
Mass of Cl = 34.0 gram
Conversion of gram into mol.
33 gram Na × 1 mole Cl2 / 22.99 g Na = 1.435 mol Na.
1.435 mol Cl2 × 70.906 gram Cl2 mol Na = 0.718 mol Cl2
0.718 mol Cl2 × 70.906 gram Cl 2 = 50.89 Cl2.
It can be seen that here, Cl2 is a limiting reagent.
Calculation of NaCl in gram
34 gram of Cl2 × 1 mol Cl2/ 70.906 g Cl2 = 0.4795 mol Cl2.
0.4795 mol Cl2 × 2 mol NaCl / 1 mol Cl2 = 0.9590 mol NaCl
0.9590 mol NaCl × 58.44 gram NaCl / 1 mol NaCl = 56 gram NaCl.
Therefore, the 56 gram of NaCl will be produced from 33.0 gram of Na and 34.0 gram of Cl.
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What are 3 ways in which you or a classmate can use the scientific method to explore how exercise impacts the body?
Answer:
You could test for energy levels or the amount of times you can do a specific excersice.
How many grams of sodium hydroxide are needed to completely react with 50.0 grams of H2SO4?
Answer:
48.0 grams
Explanation:
The products of this reaction are nitrogen gas and water. How many grams of sodium hydroxide (NaOH) are needed to completely react with 50.0 grams of sulfuric acid (H2SO4) to form sodium sulfate (Na2SO4) and water? 2NaOH + H2SO4 → Na2SO4 + 2H2O ; 48.0 grams of NaOH are needed.
51.020 grams of sodium hydroxide is needed to completely react with 50 grams of sulfuric acid according to stoichiometry.
What is stoichiometry?It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.
The reaction between sodium hydroxide and sulfuric acid is as follows,
2 NaOH + H₂SO₄[tex]\rightarrow[/tex]Na₂SO₄+2 H₂O
From the reaction, it is clear that 2 oles of sodium hydroxide react with 1 mole of sulfuric acid to give products. According to molar mass concept,
100 g of sodium hydroxide gives 98 g of sulfuric acid
Therefore, 50 gram of sulfuric acid requires 50×100/98=51.020 g
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Explain the effects distance and mass have on the gravitational pull of the planets.
Answer:
Gravity is normal...
Explanation:
Objects with more mass have more gravity. Gravity also gets weaker with distance. So, the closer objects are to each other, the stronger their gravitational pull is. Earth's gravity comes from all its mass. So, theoretically speaking planets move or get pulled due to their huge amount of mass.
An unknown organic compound containing carbon, hydrogen, and oxygen, is subjected to combustion analysis. When 3.498 g of the unknown compound is combusted, 7.950 g of CO2 and 3.255 g of H2O is formed. What is the molecular formula of the unknown compound if its molar mass is 174.27 g/mol?
Answer:
Molecular formula for the organic compound is: C₉H₁₈O₃
Explanation:
We determine the combustion reaction:
CₓHₓOₓ + O₂ → CO₂ + H₂O
We don't know the subscrip of the organic compound, that's why we put x.
Notice we have C in the compound and in CO₂. Let's find out the mass of C. 1 mol of CO₂ contains 1 mol of C
Then (7.950 g /44g/mol) of CO₂ may contain ?
(7.950 g /44g/mol) represents the moles of dioxide → 0.181 moles of C
These moles came from the mass of the organic compound, the 3.498 g.
So now, we can know the subscript for C.
If 3.498 g of the compound contain 0.181 moles of C
174.27 g of the compound may contain (174.27 . 0.181)/ 3.498 = 9
Let's do the same for the H.
1 mol of water contain 2 moles of H
(3.255 g /18 g/mol) of water, may contain ?
3.255 g /18 g/mol = 0.181 moles . 2 = 0.362 moles of H
These moles came from the mass of the organic compound, the 3.498 g.
Let's find out the subscript for H
If 3.498 g of the compound contain 0.362 moles of H
174.27 g of the compound may contain (174.27 . 0.362)/ 3.498 = 18
Organic compound is C₉H₁₈Oₓ. If the molar mass is 174.27 g we can easily determine the moles of O
12 g/mol . 9 + 1 g/mol . 18 + 16 g/mol . X = 174.27 g/mol
(174.27 g/mol - 12 g/mol . 9 - 1 g/mol . 18 ) / 16 = 3
Molecular formula for the organic compound is: C₉H₁₈O₃. Therefore the complete combustion reaction is:
C₉H₁₈O₃ + 12O₂ → 9CO₂ + 9H₂O