Answer:
339.2K
Explanation:
Using Charles law equation;
V1/T1 = V2/T2
Where;
V1 = initial volume (L)
V2 = final volume (L)
T1 = initial temperature (K)
T2 = final temperature (K)
According to the information provided in this question,
V1 = 2.97 L
V2 = 3.42 L
T1 = 21.6°C = 21.6 + 273 = 294.6K
T2 = ?
Using V1/T1 = V2/T2
2.97/294.6 = 3.42/T2
Cross multiply
2.97 × T2 = 294.6 × 3.42
2.97T2 = 1007.532
T2 = 1007.532 ÷ 2.97
T2 = 339.236
The final temperature is 339.2K
PLEASE HELP ME FILL IN THE BLANKS NO ONES BEEN HELPING ME!! GIVING 15 POINTS AWAY!!
PLEASE HELP! WILL MARK BRAINLIEST!!
Explanation:
An ionic compound is composed f a metal and a non metal.
First Question:
Chlorine - Non metal
The metal would be H. Aluminium.
It is not Berylium because the electronegativity difference between it and chlorine is less than that of an ionic bond.
Second Question:
Phosphorus - Metal
The only non metal in the options is W. Oxygen
Third Question:
Magnesium - Metal
The only non metal in the options is I. Nitrogen
Fourth Question:
Sodium - Metal
The only non metal in the options is C. Sulfur
Predict which neutral salt will form from the following reaction:
Zn(OH)2 + 2 HNO3 → 2 H2O + ____
Answer:
The salt formed is Zn(NO₃)₂.
Explanation:
From the reaction between Zn(OH)₂ and HNO₃ we will have the following products:
Zn(OH)₂ + HNO₃ → H₂O + Zn(NO₃)₂
In an acid-base reaction, we will have water by the neutralization between the acid (HNO₃) and the base (Zn(OH)₂), and the salt between the ions of the atoms of the acid and the base (Zn²⁺ and NO₃⁻) as final products.
Now, we need to equal the number of Zn, O, N, and H atoms in both sides of the reaction:
Zn(OH)₂ + 2HNO₃ → 2H₂O + Zn(NO₃)₂
Then, the number of atoms of the reactants is now equal to the number of atoms in the products.
Therefore, the salt formed is Zn(NO₃)₂.
I hope it helps you!
The neutral salt formed by the reaction between Zn(OH)₂ & HNO₃ is zinc nitrate (Zn(NO₃)₂).
How salt is formed?Salt is formed by the reaction between the acid and base to produce water molecules and salt, this reaction is known as neutralization reaction.
In the question, nitric acid (HNO₃) and zinc hydroxide (Zn(OH)₂) is present as a base and reaction between them produces the water and salt.
Given chemical reaction is represented as:
Zn(OH)₂ + 2HNO₃ → 2H₂O + Zn(NO₃)₂
Obtained salt from the above reaction is zinc nitrate (Zn(NO₃)₂), which is a neutral compound.
Hence we get zinc nitrate (Zn(NO₃)₂) as a resultant salt.
To know more about neutralization reaction, visit the below link:
https://brainly.com/question/203541
A place where electrical energy is generated
A) Transform
B) electrical energy
C) Power plant
Answer:
C. Power plant
Explanation:
7.
Which equation is correctly balanced?
Question 10
Which chemical species is an intermediate in the formation of the goal reaction?
Answer:
C. C
Explanation:
Intermediates are species that are neither reactants nor products.
In this reaction;
Reactant = C3H8 and O2
Products = CO2 + H2O
From the options, the only element that is either the reactants nor products is;
C. C
The Sun is made up of approximately 75% hydrogen and 25%
Answer:
The Sun, like others stars, is a ball of gas. In terms of the number of atoms, it is made of 91.0% hydrogen and 8.9% helium. By mass, the Sun is about 70.6% hydrogen and 27.4% helium.
Explanation:
helium is probs ur answer!
In the reaction, HCl + NaOH NaCl + H₂O, what is/are the reactant(s)?
A: HCl only
B: HCl and NaOH
C: NaCl only
D: HCl and NaCl
Answer:
HCI and NaOH
Convert 49.3 grams of NaCl to moles of NaCl atoms
Answer:
0.845mol NaCl
Explanation:
NaCl has a molar mass of 58.44g/mol.
49.3g/58.44g/mol = 0.845mol
Answer:
0.844
Explanation:
if you divide 49.3 by 58.44 it gives you 0.84360027 which you then round up to 0.844. I know my answer is correct cause I just took the test
the mayor refused to _______ as to his margin of victory in the election.
a.) drudgery
b.)prognosticate
c.) implored
Answer:
prognosticate
Explanation:
foretell or prophesy (an event in the future).
"the economists were prognosticating financial Armageddon"
how many electrons does Helium need to have a full outer shell
Answer:
i dont no about this one
Explanation:
Will mark BRAINLIEST question and choices in photos
Answer:
what to do in this question
structuric formula of SO2
When the sun shines directly on objects, white objects remain cooler than black objects. This difference in temperature is because more of the light striking white objects is–
Answer:
The amount of sun that is being reflected and how hot the sunlight being reflected is
Explanation:
3. What are the Earth's Poles? *
2 points
The Earth has a North Pole where Santa class lives and a South Pole where all the
enemies of Santa Claus live
O
The Earth has magnetic poles like a magnet. It has magnetic north and south poles
just like a magnet.
The Earth's Poles are places where people gather together to drink nonalcoholic
drinks.
Explanation:
I think the answer is 2nd
A gas occupies a volume of 143 mL at 35.0 °C and .5 atm. What is the volume of the gas at standard temperature and pressure of 1 atm and 0°C.
A.0 mL
B.8.50 x 10-4 mL
C.63.4 mL
D.557.7 mL
complete end balance the reaction :copper plus hydrobromic acid
Answer:
The correct answer is - 2Cu + 4HBr → 2H[CuBr2] + H2
Explanation:
Copper (Cu) and hydrobromic acid (HBr), which is a dissolved form of hydrogen bromide in the water, react and produce hydrogen dibromidocuprate (I) and hydrogen molecules.
The complete and balanced equation is -
2Cu + 4HBr → 2H[CuBr2] + H2
This reaction takes place in the medium of ester. Copper is in the suspension form in this reaction.
Thus, the correct answer is - 2Cu + 4HBr → 2H[CuBr2] + H2
Static electricity is produced when _____.
atoms gain protons
atoms gain or lose electrons
atoms lose neutrons
electrons move through materials
Answer:
Atoms gain or lose electrons
Explanation:
Find the mass of 1.59 mol of NH3
Answer:
27.03 grams
Explanation:
moles (n) = mass(m)/Molar mass(M)
moles = 1.59
mass = ?
N = 14, H = 1
M(NH3) = 14 + 3(1) = 17
Substitute the values into the equation:
nM = m
∴ m = 1.59 × 17 = 27.03
If I use the dropper to add 10 mL of drink mix to 50 mL of water, what is the
percent by volume of the drink mix in the solution? Percent by volume is
calculated the same way as percent by mass, but instead of mass, place the
volume of the solute in the numerator (top) and the volume of the solution in the
denominator (bottom).
Answer:
16.7%
Explanation:
From the question given above, the following data were obtained:
Volume of drink mix = 10 mL
Volume of water = 50 mL
Percentage of drink mix =?
Next, we shall determine the total volume of the solution. This can be obtained as follow:
Volume of drink mix = 10 mL
Volume of water = 50 mL
Total volume of solution =?
Total volume of solution = (Volume of drink mix) + (Volume of water)
Total volume of solution = 10 + 50
Total volume of solution = 60 mL
Finally, we shall determine the percentage of the drink mix in the solution. This can be obtained as follow:
Volume of drink mix = 10 mL
Total volume of solution = 60 mL
Percentage of drink mix =?
Percentage of drink mix = Vol. of drink mix / total volume × 100
Percentage of drink mix = 10/60 × 100
Percentage of drink mix = 16.7%
is. Mg(s) --------------> Mg2+(aq) + 2e−
oxidation or reduction?
Answer:
Oxidation
Explanation:
Mg loses 2e- for it to gain it's stability hence the reaction above is oxidation
note: Oxidation is the loss of electrons while reduction is the gain of electrons
Blue agave, shown below, asexually reproduces by sending out shoots, which later mature into pups.
The similarity of the pups to the mother plant reveals that all of the pups -
A
Share the same water source
B
Have the same genetic
material
с
Will live for the same number of years.
D
Lack the ability to conduct photosynthesis.
Please help I’ll give 50 points to the person!
I’m being timed pls help
what is sodium chloride
Answer:
Sodium chloride, commonly known as salt, is an ionic compound with the chemical formula NaCl, representing a 1:1 ratio of sodium and chloride ions.
Explanation:
I HOPE THIS HELPS YOU OUT WITH YOUR QUESTION! PLZ LET ME KNOW IF IT DID! IT MAKES ME FEEL GOOD THAT SOMEONE APPRECIATES IT! ANYWAY, IF YOU HAVE A FEW MINUTES PLZ GOT TO MY PROFILE AND THANK MY ANSWERS (THE MORE THE MERRIER)
(I got 4 questions for the day.)
Isotopes are elements with the same # of protons but a different # of_____.
A.Electrons
B. Neutrons
C. Atoms
How many Neutrons are in this isotope of oxygen?
A.8
B.18
C.10
D.12
How many neutrons are in this isotope of carbon?
A.6
B.7
C.13
D.19
How many neutrons does the isotope of phosphorus have?
A.15
B.25
C.10
D.5
Answer:
A) Electrons
A) 16-8=8 so it'd be 8
(Relative atomic mass - atomic number = neutrons)
A) 12
Same thing as last one.
31-15=16 ( did you type the wrong options if not then huh?)
Explanation:
What is a saturated solution that cannot dissolve any more solute because it is too
concentrated?
Answer:
saturated solution
Explanation:
hope this helps!
Answer:
it would be saturated
Explanation:
because there is to much of the solute
One of the following derivations is correct which one
PLEASE HELP ASAP IT'S TIMEDDDDD
The frequency of the musical note F3 is 1.85 102 hertz. What is its period?
A 5.40 x 10-3seconds
B. 1.05 x 10-3 seconds
C. 3.09 x 10-3 seconds
D. 5.31 x 10-1 seconds
Answer: 0.0054 s
Explanation: There is an inverse relation between the frequency and the period of a wave (a sound wave in this case):
T=1/F
Where f = 1.85 (10)² H z
Hence : T = 1/1.85 (10)² H z T =0.0054s
PLEASE HELP ME !!!! which of these could be a possible molar mass of a compound with the empirical formula CH3?
Answer:
15.03 g/mol or any multiple of this, since this is the empirical formula
Explanation:
To find molar mass, look to the periodic table. C is carbon, which has a molar mass of 12.01 g/mol. H is hydrogen, which has a molar mass of 1.008 g/mol. You have one carbon and three hydrogens in this empirical formula, so 12.01 + 3(1.008) = 15.034 g/mol.The empirical formula is the lowest whole number ratio for the elements in a compound. Therefore the answer would be 15.03 g/mol or any multiple of this, since this is the amount for the empirical formula.