Answers
Answer:
the correct answer is option C
Related Questions
PLEASE HELP. I WILL GIVE BRAILIEST. I DON'T HAVE TIME PLEASE Which type of reaction does this diagram represent?
C H 3 single bonded to C, which is single bonded above to H and double bonded to O, plus H C N right arrow C H 3 single bonded to C, which is bonded above to H, to the right to O H, and below to C N.
addition
condensation
elimination
substitution
Answers
Answer:
addition
Explanation:
Answer:
Explanation:
Edge 2022
The pH of an unknown strong acid is 2. What is the hydronium ion concentration?
Answers
Answer:
i believe its 12
Explanation:
The hydronium ion concentration can be found from the pH by the reverse of the mathematical operation employed to find the pH.
4. Calculate the total heat required to convert 23.6 g of ice at -27 ºC to steam at 121 ºC. Hint: Calculation involves more than 1 step.
5.How much heat, in kJ, is needed to convert 12.8 g of ice at -18 ºC to steam at 118 ºC? Hint: Calculation involves more than 1 step.
Answers
Answer:
filedownload.ashx heres a pdf
Explanation:
What is the pressure?
Answers
Which of the following statements are true about elements and compounds?
A. Elements are made up of compounds.
B. Compounds are made up of elements
C. Elements can be shown with chemical symbols, but compounds cannot.
D. Elements and compounds are the same thing.
Answers
Answer:
the answer is b
hope this helps :)
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What two forces act in the nucleus to create a 'nuclear tug-of-war'?
a.
Covalent bond, ionic bond
c.
Van der waals force, dipole
b.
Electrostatic repulsion, strong nuclear force
d.
All of the above
Answers
Answer:
Electrostatic repulsion, strong nuclear force
Explanation:
The nucleus consists of protons and neutrons. protons are positively charged while neutrons possess no charge.
Since protons are positively charged, they repel each other strongly (like charges repel). This strong repulsion of like charges makes the nucleus somewhat unstable leading to spontaneous fission of heavy nuclei.
However, an opposing force called nuclear attractive force tends to hold the nucleons together. This attraction occurs when two nucleons are bonded by a particle called a π meson.
Hence, the two forces that act in the nucleus to create a 'nuclear tug-of-war' are electrostatic repulsion and a strong nuclear force.
Hydrogen and oxygen combining to form water is an example of a physical change.
Answers
How many molecules are in 0.500 mole of N2O5?
Answers
Answer:
3,011.10e23.
Explanation:
Mole measure the number of elementary entities of a given substance that are present in a given sample. 3.01×10²³molecules are in 0.500 mole of N₂O₅.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. Mole is directly proportional to given mass.
Mathematically,
Number of molecules/atoms/ions of N₂O₅ = number of moles×6.022×10²³(Avogadro number)
Number of moles of N₂O₅= 0.500 mole
Substituting the given values, we get
Number of molecules/atoms/ions =0.500moles×6.022×10²³(Avogadro number)
Number of molecules/atoms/ions of N₂O₅ =3.01×10²³molecules.
Therefore, 3.01×10²³molecules are in 0.500 mole of N₂O₅.
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Which equation is balanced?
CH4 + O2 ⟶ CO2 + H2O
Mg + 2HCl ⟶ MgCl2 + H2
Mg + P4 ⟶ Mg3P2
Answers
Answer:
A I think
Explanation:
im not sure so do with that what you will
Balance the following chemical equation. Choose the correct coefficients in the balanced equation in order. *
4, 3, 2
2, 4, 2
1, 1, 1
3, 2, 3
Answers
Answer: 4,3,2
Explanation:
what type of reaction takes place when bromine reacts with iron iodide
Answers
Answer:
If you pass bromine vapour over hot iron, a similar but slightly less vigorous reaction happens, this time producing iron(III) bromide. Anhydrous iron(III) bromide is usually produced as a reddish-brown solid. Again the iron has been oxidised to an oxidation state of +3.
Explanation:
Which tool was most likely used in a procedure if the lab report shows that 300 mL of water was used?
O a volumetric flask
O a thermometer
a pipette
O a graduated cylinder
Answers
or
a graduated cylinder
If there were 11.25 moles of solute in a 6.0M solution, what volume would it have?
Answers
Answer:
1.875 dm^3
Explanation:
M = moles of solute ÷ volume of solution
M =11.25 x 6
= 1.875 dm^3
2L is the correct answer .
HOW TO CALCULATE ??
Given : moles of solute(n) = 11.25Molarity (M) = 6
To Find : Volume of the solution (v) = ?Key concept : [tex]M=\frac{n}{V(inL)}[/tex]On puting values and solving we get , V = 1.875 L ≈ 2L
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what are radioactive tracers used for
Answers
Answer:
Radioactive tracers are widely used to diagnose industrial reactors, for instance by measuring the flow rate of liquids, gases and solids.
Explanation:
Radioactive tracers are widely used to diagnose industrial reactors, for instance by measuring the flow rate of liquids, gases and solids. A radioactive tracer is a chemical compound in which one or more atoms have been replaced by a radioisotope.
heres the link for more information
https://www.iaea.org/topics/radiotracers#:~:text=Radioactive%20tracers%20are%20widely%20used,been%20replaced%20by%20a%20radioisotope
.
⚠️⚠️What is kinetic energy ? ⚠️⚠️
Energy of work
Energy of movement
Energy of gravity
Energy of power
⚠️⚠️PLEASE HELP IM BEING TIMED⚠️⚠️⚠️
Answers
Answer:
Energy of Movement.
Explanation:
Have a great day!
Which processes involve nuclear changes?
A. fission and fusion
B. erosion and weathering
C. combustion and oxidation
D. evaporation and condensation
Answers
Answer:
Nuclear processes, including fusion, fission, and radioactive decays of unstable nuclei, involve changes in nuclear binding energies.
Explanation:
mark me brainliest please
How many moles of oxygen gas occupy 67.2 L of volume at STP?
A 0.333
B 3.00
C 1.00
Answers
Answer:
I would say b hope this helps
Explanation:
have a good day btw i had this question before:D
How much heat do you need to raise the temperature of 300 g of ethanol from 0°C to 20°C?
Answers
Answer:
14.6
Explanation:
I just took the test
The amount of heat to raise the temperature is 14.7J.
How do you calculate the heat needed to raise the temperature?The specific heat capacity of a substance is the quantity of heat needed to raise the temperature of a unit quantity of the substance by one degree. Calling the amount of heat added Q, which will cause a change in temperature ∆T to a weight of substance W, at a specific heat of material Cp, then Q = w x Cp x ∆T
By applying the formula, we get
Q = w x Cp x ∆T
Q = 300 * 2.46 * 20/1000
Q = 14.760J
What is heat?
Heat is energy that is transferred from one body to another as the result of a difference in temperature.
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how many moles of HCI will react with 18.13g of SrO
Answers
Answer:
Explanation:
The balanced chemical equation between
SrO + 2HCl → H2O + SrCl2
Use the drop-down menus to rank the boiling points of the following hydrocarbons. Use a "1" to indicate
the compound with the lowest boiling point.
Answers
Answer:
1. 4
2. 2
3. 3
4. 1
Explanation: just did it on edge 2021
Answer:
one.) 4
two.) 2
three.) 3
four.) 1
calculate the mass of 0.8 moles of Fe(NO3)3 (H2O)9
Answers
Answer:
Molar mass of (Fe(NO3)3)(H2O)9 is 403.9972 g/mole
Explanation:
the formula to find the mass of moles
Worked Example: molar mass = mass ÷ moles (M=m/n) Calculate the molar mass of a pure substance if 1.75 moles of the substance has a mass of 29.79 g.
i think it help you
How many moles of hypomanganous acid. H3 MnO4, are contained in 22.912 g?
Answers
Answer:
0.188mol
Explanation:
Using the formula;
mole = mass/molar mass
Molar mass of hypomanganous acid. (H3MnO4) = 1(3) + 55 + 16(4)
= 3 + 55 + 64
= 122g/mol
According to this question, there are 22.912g of H3MnO4
mole = 22.912g ÷ 122g/mol
mole = 0.188mol
Oxygen has 6 valence electrons. how many hydrogen atoms (who have 1 valence electrons) can bond with it? remember the octet rule.
Answers
Answer:
two hydrogen can bonded with oxygen to form H2O
A jar is filled to the top with water, and a piece of cardboard is slid over the opening so that there is only water in the . If the jar is now turned over, will the cardboard fall off? What will happen if there is any air in the jar?
Answers
Answer:
it will all fall unless these is air
Explanation:
Answer:
If you do it carefully enough, a small amount of water will pour out of the glass — that's supposed to happen. But try not to let any air bubbles get into the glass. Finally, slowly remove the hand holding the cardboard in place.
The knowledge produced by science builds on old ideas and is constantly changing.
State whether you agree or disagree with this statement considering what you have learned about the scientific process.
Answers
Remember, the graph in question 1 is a cooling curve. A substance is
changing from a gas to a liquid to a solid. Which model illustrates the
final phase change in this cooling curve?
A) Image A
B) Image B
C) Image C
D) Image D
Answers
Agente infeccioso procariota cuyo ADN está disperso en el citoplasma"
1 punto
virus
bacteria
hongo
protozoo
helminto
Answers
una célula procariota o procarionte es un organismo unicelular sin núcleo cuyo material genético se encuentra disperso en el citoplasma reunido en una zona denominada nucleoide. por el contrario las células que sí tienen un núcleo diferenciado del citoplasma se llaman eucariotas es decir aquellas en las que su ADN se encuentra dentro de un compartimento separado del resto de la célula.
What is the function of these organelles?
Answers
Answer:
Endoplasmic reticulum, Golgi apparatus, Nucleus, Storage Organelles, and Energy - Producing Organelles.
Explanation:
Hope its right! Mark me as Brainliest if it it right ;)!
What is the balanced equation for the reaction of a solution of sodium sulfate is mixed with strontium chloride?
Answers
Answer:
NaSO⁴(ads) ,ganadicate
How many joules of heat is needed to heat 68.00 grams of aluminum foil from
55.00 °C to 93.00 °C if aluminum has a specific heat of 0.90 J/g °C?
Answers
Answer:
2,325.6
Explanation:
You use the formula
Q =mco
M =mass =68
C=0.9
O=temperature increases =93-55=38
Then multiple all this 3
Q=68*0.9*38
The number of joules of heat that is needed to heat 68.00 grams of aluminum foil is 2,325.6.
What is specific heat?The amount of energy needed to raise the temperature of one gram of a substance by one degree Celsius.
By the formula of heat
Q = mct
The mass of aluminum is 68.00
the difference in temperature is 93.00 °C - 55.00 °C = 38.00
The specific heat is 0.90 J/g
Putting the values in the equation
[tex]Q = mct\\\\Q = 68.00 \times 0.90 \times 38.00 = 2325.6[/tex]
Thus, the joules of heat is 2325.6 J.
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