Answer:
3,46 atm
Explanation:
Tenemos;
P1 =?
T1 = 100 + 273 = 373 K
V1 = 40 litros
P2 = 6 atmósferas
T2 = 50 + 273 = 323 K
V2 = 20 litros
Desde;
P1V1 / T1 = P2V2 / T2
P1V1T2 = P2V2T1
P1 = P2V2T1 / V1T2
P1 = 6 * 20 * 373/40 * 323
P1 = 44760/12920
P1 = 3,46 atm
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
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!
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:
PLEASE HELP ASAP IT'S TIMEDDDDD
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"
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
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!
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
(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:
A single electron configuration can represent multiple atoms. The one below represents the following atoms with different charges. Determine what charge they need to match the electron configuration. 1s²2s²2p⁶3s²3p⁶4s²3d⁷
Answer:
To have the electronic configuration equal to 1s²2s²2p⁶3s²3p⁶4s²3d⁷, the chemical element must have an electrical charge equal to 27, that is, it must have 27 electrons, such as Cobalt (Co), for example.
Explanation:
The electronic configuration shown in the question above is known as the Linus Pauling distribution and represents the energy sub-levels that an electrically charged atom can have in relation to the amount of electrons it has.
The layers sub-levels are presented in the following order 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹º 4p⁶ 5s² 4d¹º 5p⁶ 6s² 4f14 5d¹º 6p⁶ 7s² 5f14 6d¹º 7p⁶. Where the small numbers represent the number of electrons in each sub-level and the large numbers represent the layers of electronic distribution.
Accordingly, we can see that an atom that has the configuration 1s²2s²2p⁶3s²3p⁶4s²3d⁷ has 27 electrons, like Cobalt.
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
What is true love? Real love
Answer:
Both of you guys love each other, and call in phones, not in texts.
Explanation:
Did you know if someone really loves each other, they call eachother instead of texting?
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)
A place where electrical energy is generated
A) Transform
B) electrical energy
C) Power plant
Answer:
C. Power plant
Explanation:
How many grams are present in 2.5 moles of glucose (C6H12O6)?
How many grams of H2 are produced from the reaction of 30.0g of NaOH?
Answer:
no se la verdad de la respuesta
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
PLEASE HELP ME FILL IN THE BLANKS NO ONES BEEN HELPING ME!! GIVING 15 POINTS AWAY!!
One of the following derivations is correct which one
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
how many electrons does Helium need to have a full outer shell
Answer:
i dont no about this one
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
Will mark BRAINLIEST question and choices in photos
Answer:
what to do in this question
structuric formula of SO2
I’m being timed pls help
Calvin goes for a walk outside and begins to sweat. His sweat will not evaporate. What is the most likely cause of this?
D. A wind speed of 40 mph
E. An air temperature of 7 °C or 45 °F
F. A strong northerly wind
G. A relative humidity of 95%
Answer:D
Explanation:it makes sense alot
Answer: D) A relative humidity of 95%
Explanation:
7.
Which equation is correctly balanced?
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
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:
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.