Answer:
it is A tide (A,C)
Explanation:
i just took the test and tried c and it was a plzzzzz put a btw it was my test lol
The reason for the trend in the previous question is because Bromine is _________electron density from the carbon the proton is on, resulting in the proton being ___________, thus the proton nuclei is_________ effected by the applied magnetic field leading to a greater difference in energy of the nuclei's spin states.
Answer:
Explanation:
From this question, we are to fill in the blanks with the appropriate correct answers.
[tex]\text{The reason for the trend in the previous question is because Bromine is } \mathbf{withdrawing}[/tex][tex]\text{electron density from the carbon the proton is on, resulting in the proton being }\mathbf{deshielded, }[/tex][tex]\text{thus the proton nuclei is} \ \ \mathbf{more} \ \ \text{effected by the applied magnetic field leading to a }[/tex]
[tex]\text{greater difference in energy of the nuclei's spin states.}[/tex]
NOTE: that the electron-withdrawing groups decrease the electron density around the proton nucleus and therefore the nucleus feels the external magnetic field more. Hence, it requires a larger frequency to attain resonance(downfield).
Chlorine and hydrogen gas react to form hydrogen chloride as shown in the following reaction Cl 2 ( g)+H 2 (g)--->2HCl (g) Given a 7.10 g sample of chlorine (MM =71.0 g/mol) , how many grams of hydrogen chloride (MM =36.5 g/mol) is produced, assuming the reaction goes to completion? a. 7.10 g 6.3.65 9 c. 5,68 g d 7.300
Answer:
it should be 7.300 sorry if I am wrong
Answer:
The answer is 115
Explanation:
Teacher walked me through it.
PLEASE PLEAS HELP I REALLY NEED IT
Answer:
A i took the quiz
Explanation:
How does size affect weight?
(20 points, write at least 5 sentences answer pls thx!)
If 5.00 g of O2 gas has a volume of 7.20 L at a certain temperature and pressure, what volume does 15.0 g of O2 have under the same conditions?
The volume 15.0 g of O₂ has at a certain temperature and pressure is 2.16 L.
What is volume?Volume is the space occupied by a three-dimensional object.
By the law of dilution
M₁/V₁ = M₂/V₂
Mass 1 is 5.00
Volume 1 is 7.20 L
Mass 2 15.0 g
Volume 2 is to find
Putting the value in the equation
5.00/ 7.20 = 15.0 / V₂
V₂ = 7.20 × 15.00/ 5.00 = 21.6
Thus, the volume will be 21.6 L.
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Balance C3H8 + O2 + CO2 + H2O
Assuming the second plus sign is a typo and was meant to be a reaction arrow, this would be the balanced equation:
C3H8 + 5O2 —> 3CO2 + 4H2O
GROUP NUMBER
ELEMENT
Potassium
Fluorine
Silicon
Radon
Gold
Beryllium
Oxygen
Neon
Rubidium
Tungsten
Arsenic
Calcium
Sodium
Aluminum
Chromium
Iodine
Helium
Nitrogen
Iron
Zinc
Answer:
Jet ğıpep2pep2p2pp3oroe88r82
what are the twa parts of central nervous system ?
Answer:
The nervous system has two main parts: The central nervous system is made up of the brain and spinal cord.
Explanation:
How many moles of chlorine atoms are there in 0.5 mol of titanium (III) chloride?
Answer:
it is your answer..... if it is helpful plzz like and comment.....
Using the periodic table, choose the more reactive nonmetal.
Te or O
Answer:
answer is TE
Explanation:
Answer:
Tellurium is more reactive than Oxygen
A chemist has a sample of 1.88 M HCl. What volume of the sample does he require to prepare 200 mL of 0.45 M HCl?
Answer: v = 200 ml · 0.45 M/ 1.88 M
Explanation: when solution is diluted, amount of substance
is same and n= c · V v1 = v2 · c2 / c1
The appropriate answer is "47.87 mL".
Given values are:
Concentration of undiluted HCl, [tex]C_1=1.88 \ M[/tex]Concentration of diluted HCl, [tex]C_2=0.45 \ M[/tex]Volume of diluted HCl, [tex]V_2=200 \ mL[/tex]By using the dilution equation, we get
→ [tex]C_1V_1=C_2V_2[/tex]
or,
→ [tex]V_1=\frac{C_2V_2}{C_1}[/tex]
By substituting the given values, we get
→ [tex]=\frac{0.45\times 200}{1.88}[/tex]
→ [tex]=\frac{90}{1.88}[/tex]
→ [tex]= 47.87 \ mL[/tex]
Thus the above answer is correct.
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need help asap, In this reaction how many units of B are required to form 40 units of C? A+2B--->C
Answer:
80 units B
Explanation:
Equation for the reaction is given below:
A + 2B —> C
From the equation above,
2 units of B reacted to produce 1 unit to C.
Finally, we shall determine the unit of B needed to produce 40 units of C. This can be obtained as follow:
From the equation above,
2 units of B reacted to produce 1 unit to C.
Therefore, x unit of B will react to produce 40 units of C i.e
x unit of B = 2 × 40
x unit of B = 80 units
Thus, 80 units B is needed for the reaction.
MATch THE BOXED PLEASEEEE
Answer:
Transform = The third one
Convergent = the first one
Divergent = the second one
Explanation:
A 20.0 L container at 303 K holds a mixture of two gases with a total pressure of 5.00 atm. If there are 2.00 mol of Gas A in the mixture, how many moles of Gas B are present?
The number of moles of Gas B in the gas mixture is equal to 2.00 mol.
What is the ideal gas equation?The ideal gas equation can be explained as an equation that describes the state of an ideal gas. This equation gives the product of the volume and pressure of ideal gas equal to the multiplication of the universal gas constant, absolute temperature, and moles of gas.
The mathematical form of the ideal gas equation mentioned below:
PV = nRT
Where P is the pressure, V is the volume, n is the moles, and R is the gas constant.
Given, the volume of the gas mixture, V = 500 ml = 0.5 L
The temperature of the gas mixture, T = 303 K
The pressure of the gas mixture = 5 atm
The value of gas constant, R =0.082 atmL/K mol
Substituting the values R, V, P, and T in the ideal gas law, we get:
The number of moles of the gas mixture, n = PV/RT
n = 5 ×20/(0.082 × 303)
n = 4.00 mol
The total number of moles of gas mixture = 4.00 mol
The moles of Gas A = 2.00 mol
The moles of Gas B = 4 - 2 = 2.00 mol
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Rank the following compounds in order of decreasing acidity. Be sure to answer all parts. A) Benzyl alcohol B) Methylbenzene C) Benzoic acid
The order of decreasing the acidity of the given compounds:
Benzoic acid > Benzyl alcohol > Methylbenzene.
What is the acidic strength?The acidic strength of an acid can be described as the ability of the acid to lose its H⁺ ion. In general, the dissociation of acid can be represented as:
HA → H⁺ + A⁻
Some examples of strong acids are hydrochloric acid, sulfuric acid (H2SO₄), perchloric acid (HClO₄), etc.
The benzoic acid is a very strong acid with pka value of 4.5 as it contains the (-COOH) group. The Benzyl alcohol with pka value of 15.4 as it contains the (-CH₂OH) group attached to the benzene ring. The methylbenzene with pka value of 41 has the lowest acidity as it contains the methyl group attached to the benzene ring.
Therefore, the order of acidic strength for the given compounds is Benzoic acid > Benzyl alcohol > Methylbenzene.
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What is the percent composition of hydrogen in glucose
Answer:
67%Explanation:
Thus the % composition of glucose by mass is carbon 40.0 % oxygen 53.3 % hydrogen 6.7 % in this way, the % composition by mass of any compound can be calculated provided that is formed is known.I don’t understand please help
What is Heat? What is Cold?
Answer:
Heat is the process of something getting hot(temperatures going up). Cold is when something gets cold(temperature decreases).
Explanation:
Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients.
The balanced chemical equation using the smallest possible whole number stoichiometric coefficients is:
[tex]3Br_{2} + I_{2} \rightarrow 2IBr_{3}[/tex]
What is a balanced equation?A balanced chemical equation is an equation in which the the moles of atoms in of elements of reactants is equal to mole of atoms of elements of the product.
The balanced chemical equation of the reaction is given below:
[tex]3Br_{2} + I_{2} \rightarrow 2IBr_{3}[/tex]
Therefore, the balanced chemical equation using the smallest possible whole number stoichiometric coefficients is given above.
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How many moles of silver atoms are in the piece of jewelry?
The number of moles of silver atoms in the piece of jewelry is 0.08784 moles
Here is the complete question:
Suppose a piece of jewelry contains 5.29 × 10²² atoms of silver . How many moles of silver atoms are in the piece of jewelry?
From the question,
A piece of jewelry contains 5.29 × 10²² atoms of silver.
To determine number of moles of silver atoms in the piece of jewelry,
We will use the formula
[tex]Number \ of \ moles = \frac{Number \ of \ atoms }{Avogadro's \ number}[/tex]
From the question
Number of atoms of silver = 5.29 × 10²² atoms
and
Avogadro's number = 6.022 × 10²³ atoms/mole
∴ [tex]Number \ of \ moles \ of \ silver \ atoms= \frac{5.29 \times 10^{22} }{ 6.022 \times 10^{23} }[/tex]
Number of moles of silver atoms = 0.08784 moles
Hence, the number of moles of silver atoms in the piece of jewelry is 0.08784 moles
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Which of the following would be defined as an exact number?
A. bronze is 12.5% by mass tin
B. 25 ml
C. 50.00 cm
D. 1.000 liters
Which superpower would you have for the rest of your life?
The ability to fly
Teleportation
Super speed
Super strength
Invisibility
Time travel
Or be normal and have nothing special
time travel is the best option
You heat water and olive oil in two separate pans for a delicious new pasta recipe. The pans are the same temperature, but only the water is boiling! Why?
A
Olive oil has weaker intermolecular forces than water. This makes the intermolecular forces in oil easier to break, and keeps the molecules stuck together in a liquid state.
B
Water has weaker intermolecular forces than olive oil. This makes the intermolecular forces easier to break, allowing the individual water molecules to separate and change to a gas.
C
Water is losing electrons more quickly than olive oil is. The electrons float to the surface of the water, and their movement allows the phase change to happen.
Answer:
I think A is the correct answer
Answer: the answer is B 100%
What is entropy?
A. Entropy is the measure of ability to do work.
B. Entropy is the measure of heat content.
C. Entropy is the measure of energy in molecules.
D. Entropy is the measure of randomness.
Answer:
D. Entropy is the measure of randomness
Explanation:
I got it right so I don't know if it's going to be right for you. All questions/answers are not the same but since I personally got it right then I wanted to help you out! I apologize if I'm late/wrong! God bless you guys!
Answer:
Entropy is a measure of randomness.
Explanation:
i just took the test on a pex.
What is the molality of a solution containing 18.2 g HCl and 250. g of water?
Answer:
m=2.0mol/kg
Explanation:
Hello there!
In this case, according to the formula to compute molality, which requires moles of solute (HCl) and kilograms of solvent (water), we first compute the moles of the former with its molar mass as shown below:
[tex]n=\frac{18.2g}{36.46g/mol}= 0.50mol[/tex]
And then the kilograms of water:
[tex]\frac{250.g}{1000g/kg} =0.250kg[/tex]
Finally, the molality turns out to be:
[tex]m=\frac{0.50mol}{0.250kg}\\\\m=2.0mol/kg[/tex]
Best regards!
A mixture of nitrogen and xenon gases contains nitrogen at a partial pressure of 251 mm Hg and xenon at a partial pressure of 472 mm Hg. What is the mole fraction of each gas in the mixture?
I uploaded the answer to a file hosting. Here's link:
tinyurl.com/wpazsebu
120 L of C3H8 is how many grams?
Answer:
44.09562 grams
Explanation:
How many grams of CaCl 2 are in .48 moles ?
Answer:
We assume you are converting between moles CaCl2 and gram. You can view more details on each measurement unit: molecular weight of CaCl2 or grams This compound is also known as Calcium Chloride. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles CaCl2, or 110.984 grams.
The mass of calcium chloride is 53.27 grams.
Given:
Moles of CaCl₂ = 0.48 moles
Molar mass of CaCl₂ = 110.98 g/mol
To find:
Mass of CaCl₂ = ?
Number of moles:It is defined as given mass over molar mass.
Number of moles = Mass / Molar mass
Mass = Number of moles * Molar mass
Mass = 0.48 moles * 110.98 g/mol
Mass = 53.27 grams
Thus, the mass of calcium chloride is 53.27 grams.
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Identify the type of reaction.
Al + MgSO4 = Al2(SO4)3 + Mg
Answer: its combustion
Explanation:
Give an example of an electrolyte
Answer: sodium chloride water solution
Explanation: Eelctrolyte contains cations and anions which can
Transfer charge
Answer:
some energy drinks like powerade or Gatorade, and some juice drinks to.
