Answers
Answer:
what grade so i can help
Explanation:
Answer:
I believe it’s Sn-Te > H-S > Si-F
Explanation:
Related Questions
Argon (Ar) is an element in group 18. Argon is _____.
a gas highly reactive
a metalloid
a good conductor of heat
Answers
Why: the first option is wrong because argon is part of the noble gases.
The second option is wrong because argon is in group 18
Therefore the last option is correct
Answer:
c
Explanation:c
it is a good conducter
Explain how atoms organize to create larger structures?
Answers
Answer:
First of all they are super tiny particles of neutrons, electrons and protons. Then they come together to organize a structure of atom. Atoms come together to form a molecule and smaller molecules work together to form macromolecules. Thus, how they organize and form building blocks of a substance.
Hope it helps!<3
what is the volume of 18.9 g of a liquid that has a density of 0.956 g/ml
Answers
To get volume you divide the mass by the density which gives you about
19.77 ml in volume
What is the structural formula of CF2Br2
Answers
Answer:
Dibromodifluoromethane
Explanation:
which of the following is an isotope of hydrogen
Answers
What is a solute?
A material that is dissolved in another material.
O A material in which another material is dissolved.
An area of space surrounding the nucleus.
O Chemical formulas on the left side of an equation.
Answers
Can someone help me and explain why they got what they got?
Answers
Answer:
24.32 amu
Explanation:
From the question given above, the following data were obtained:
Isotope A (Mg–24):
Mass of A = 24 amu
Abundance (A%) = 79%
Isotope B (Mg–25):
Mass of B = 25 amu
Abundance (B%) = 10%
Isotope C (Mg–26):
Mass of C = 26 amu
Abundance (C%) = 11%
Average atomic mass of Mg =?
Average atomic mass = [(Mass of A × A%)/100] + [(Mass of B × B%)/100] + [(Mass of C × C%)/100]
= [(24 × 79)/100] + [(25 × 10)/100] + [(26 × 11)/100]
= 18.96 + 2.5 + 2.86
= 24.32 amu
Thus, the average atomic mass of Mg is 24.32 amu
15 points! Answer only if you can please!
1. Have you ever grabbed the handle of a hot metal pan? Why did it feel hot to you?
2. What would happen if a person who is wearing a heavy winter jacket were to place a thermometer inside the jacket next to his or her skin? What would happen if we took the same jacket, after it had been hanging in a closet, and placed a thermometer inside?
3. How do you think the transfer of thermal energy causes unpopped popcorn kernels to pop?
Answers
Answer:
1. Yes
2. it would be the same i guess
3. because it travels to popcorn kernels with its heat and makes it pop'
did i get it right?
Explanation:
Which terms describe a substance that has a low melting point and poor electrical conductivity?
(1) Metallic and lustrous
(2) Dull and brittle
(3) Brittle and lustrous
(4) Metallic and dull
Answers
Which reaction takes place in a nuclear fission reactor?
C+HN
2 Put He → Cm
OCO+ He-Cot 'n
o U+ nKr+Ba+3'n
Answers
Answer:
The reaction that takes place in a nuclear fission reactor is answer D.
Explanation:
Step-by-step explanation:
Nuclear fission reactions involves the process by which large atomic nuclei are bombarded with energetic particles and release of an enormous amount of nuclear energy, which mainly ends up as heat energy.
So now, consider the nuclear reaction from D, after the uranium nucleus absorbs the neutron its split into two smaller nuclei (often radioactive themselves), Krypton and Barium and releases more neutrons (or energy).
Which set of terms best defines what affects kinetic energy and potential energy, respecrively
Answers
What is the degree of oxidation of a simple substance
Answers
Answer:
The oxidation state of a free element (uncombined element) is zero. For a simple (monoatomic) ion, the oxidation state is equal to the net charge on the ion. For example, Cl– has an oxidation state of -1. When present in most compounds, hydrogen has an oxidation state of +1 and oxygen an oxidation state of -2
Justin is making a snack. He toasts a piece of bread and first peanut butter and jelly on it. Then he cut an apple into several slices and adds these to his plate. Next Justin mixes a scoop of lemonade powder into a glass of water mixes it in Dad's ice. How many chemical changes occurred in this scenario? 1 2 three or four
Answers
Answer:
2
Explanation:
Toasting bread and lemonade powder in water are chemical changes. Pb&j on bread and cutting apple are physical changes.
Answer:
b
Explanation:
which two changes of state can be caused by removing thermal energy from a substace A. deposition B. condencation C. vaporization D.sublimation
Answers
Answer:
maybe is b but wait to other people answer
Answer:A. deposition B. condencation
Explanation:
Which of the atoms below are least likely to violate the octet rule?
Answers
Answer:
F i think i pretty sure F!!!!!!!!
A system performed 145 kJ of work on the surroundings and absorbed 105 kJ of heat from the surroundings. What is the change in energy of the system?
Answers
Answer:
250 kJ
Explanation:
Step 1: Given data
Work performed by the system (w): 145 kJ (By convention, when the system performs work on the surroundings, w > 0)Heat absorbed by the system (q): 105 kJ (By convention, when the system absorbs heat from the surroundings, q > 0)Step 2: Calculate the change in the internal energy of the system
The internal energy of a thermodynamic system is the energy contained within it. We can calculate the change in the internal energy (ΔE°) using the following expression.
ΔE° = q + w
ΔE° = 105 kJ + 145 kJ = 250 kJ
What is required to cause change in matter
Answers
Answer:
Adding or removing energy from matter causes a physical change as matter moves from one state to another. For example, adding thermal energy (heat) to liquid water causes it to become steam or vapor (a gas). And removing energy from liquid water causes it to become ice (a solid). ... Most liquids contract as they freeze.
Explanation:
have a nice day
Which of the following statements is true?
Electrons have a positive charge.
Protons and neutrons are found in the nucleus.
Electrons and protons are found in the nucleus.
All shells can hold up to eight electrons.
Answers
Answer:
2/ Protons and neutrons are found in the nucleus.
Explanation:
Humans have 50 pairs of chromosomes true or false
Answers
Answer:
False
Explanation:
humans have 23 pairs
Need help with this please thanks
Answers
Answer: 1. [tex]2H_2+O_2\rightarrow 2H_2O[/tex]
2. [tex]P_4+3O_2\rightarrow 2P_2O_3[/tex]
3. [tex]N_2+3H_2\rightarrow 2NH_3[/tex]
4. [tex]2K+Cl_2\rightarrow 2KCl[/tex]
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.
The given equations are balanced as:
1. [tex]2H_2+O_2\rightarrow 2H_2O[/tex]
2. [tex]P_4+3O_2\rightarrow 2P_2O_3[/tex]
3. [tex]N_2+3H_2\rightarrow 2NH_3[/tex]
4. [tex]2K+Cl_2\rightarrow 2KCl[/tex]
HELP ASAPPPP BRAINLIEST
Answers
Answer:
2nd option
Explanation:
Someone took the last cookie from the cookie jar last night. The last person to leave the scene is the culprit. Who was it? Highlight the guilty culprit based on the clues provided.
Answers
The reaction between calcium carbonate (CaCO3) and HCl produces calcium chloride (CaCl2), carbon dioxide (CO2), and water (H2O).What happens when the concentration of hydrogen chloride (HCl) molecules is doubled in this reaction?
CaCO3 + 2HCl → CaCl2 + CO2 + H2O
Answers
Answer:
yes that is right
Explanation:
Answer: what is the answer im on plato
Explanation:
Suggest a possible mechanism for the acid catalyzed reaction of a typical ketohexose to give 5-hydroxymethylfurfural.
Answers
Answer:
See explanation
Explanation:
Taking the acid catalysed hydrolysis of fructose C6H12O6, the mechanism begins with the protonation of an -OH group as shown.
This is now followed by dehydration and formation of a keto-enol tautomer. The keto form is now dehydrated followed by the protonation of a second -OH group.
A second dehydration followed by deprotonation leads to the formation of 5-hydroxymethylfurfural.
Image credit: SciElo
Why are a molecule's atoms as far away from each other as they can get?
A) Electronegativity differences force the atoms apart
B) The protons in the nuclei push the atoms apart
C) Forces between electron pairs push the atoms apart
D) Induced dipoles push the atoms away from each other
Answers
Answer:
the answer is a
Explanation:
an electron contains a negative charge and like charges repel each other. Hence, in a atom the force of repulsion between the atoms away from each other. As a result a molecules atoms are as far away from each others as they can get .
A molecule's atoms as far away from each other as they can get because "Forces between electron pairs push the atoms apart".
So, option C is correct one.
Why electrons repel each other?Since, an electron is negative charge species revolve around the nucleus of an atom. So, when two atoms come close to each other in molecules there is repulsion occurs between negative charge electron .
To learn more about electrons here.
https://brainly.com/question/18367541
#SPJ3
Help! I dont know how to do this lol
Answers
the order is :
- Aufbau principle
- Hund's Rule
- Pauli's Exclusion Principle
8)
C(diamond) → C(graphite)
delta G° = -2.9 kJ/molrxn
Which of the following best explains why the reaction represented above is not observed to occur at
room temperature?
(A) The rate of the reaction is extremely slow because of the relatively small value of AGº for
the reaction.
(B) The entropy of the system decreases because the carbon atoms in graphite are less ordered
than those in diamond.
(C) The reaction has an extremely large activation energy due to strong three-dimensional
bonding among carbon atoms in diamond.
(D) The reaction does not occur because it is not thermodynamically favorable.
Answers
Answer: its b hope this helps.
Explanation:
What happens after condensation to cause precipitation?
A
The sun heats water on the Earth's surface.
B
Water is absorbed into the ground.
C
Clouds fill with moisture and get too heavy.
D
Excess water runs downhill.
Answers
Answer:
The answer is c, Clouds fill with moisture and get too hravy
what is protein denaturation
Answers
Answer:
Denaturation is a process in which proteins or nucleic acids lose the quaternary structure, tertiary structure, and secondary structure which is present in their native state, by application of some
Explanation:
Pro
∆G0=-RT in k Known as
Answers
Answer:
Gibbs free energy equation
Explanation: