Answers
Explanation:
Cations are positively charged ions with fewer electrons than protons. To partake in reaction, metals lose electrons to achieve a stable octet configuration. It has lost valence electrons and wold have a positive charge associated with it.
Potassium is a group 1 element. A metal.
Potassium has 1 valence electron so it loses the valence electron to form a stable octet.
A potassium ion has a positive charge and therefore cannot be an anion but is a cation.
The group number pretty much denotes the number of valence electrons.
Group 1 = 1
Group 2 = 2
Group 17 = 7
Group 18 = 8
Related Questions
How many moles of NaCl are in 2.35 liters of a 4.67 M solution?
Answers
There are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.
HOW TO CALCULATE NUMBER OF MOLES:The number of moles of a substance can be calculated by multiplying the molarity by the volume. That is;no. of moles = volume × molarity
According to this question, there are 2.35 liters of a 4.67 M solution. The number of moles is calculated as follows:no of moles = 2.35L × 4.67M
no of moles = 10.97mol
Therefore, there are 10.97 moles of NaCl in 2.35 liters of a 4.67 M solution.
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Explain how Newton’s cradle demonstrates the law of conservation of energy.
Answers
Brainiest:):):):):):)
Answers
Answer:
1) Condensation
2) Temperature
3) Evaporation
4) Kinetic Energy
5) Sublimation
6) Thermal Energy
Calculate the vapor pressure (in torr) of a 35°C solution of ethanol and propanol where the mole fraction of propanol is .75. Assume Ideal behavior P°ethanol35=100torr P°propanol35=36torr
Answers
The vapor pressure (in torr) of a 35°C solution : 52 torr
Further explanationGiven
x propanol = 0.75
P°ethanol=100 torr
P°propanol=36 torr
Required
the vapor pressure
Solution
Raoult's Law
P solution = xA.P°A +xB.P°B
x ethanol = 1- 0.75 = 0.25
Input the value :
P solution = 0.25 x 100 + 0.75 x 36
P solution = 25 + 27
P solution = 52 torr
How many atoms are in 4.3 moles of lithium?
Answers
7. Although carbon's three isotopes are carbon-12, carbon-13, and carbon-14, its
average atomic mass is 12.01 because
A. carbon-12 is the heaviest isotope.
B. carbon-12 is most useful to humans.
C. carbon-12 is the most common isotope.
Answers
Answer:
B
Explanation:
carbon 12 is most useful to humans
does a high melting point mean the substance will melt faster or slower?
Answers
Answer:
slower...............
.
..
Answer:
it'll melt slower
Explanation:
because it needs to get to a higher temperature ig
There have been made 2 attempts of oxygen production by potassium permanganate.In the first attempt they have got 75ml oxygen in 3 minutes whearas there have been got 100ml in 5 minutes by the 2nd attempt.In what case the speed of the oxygen production is bigger???
Pls explain your answer
Answers
Answer:
The speed of oxygen production is bigger in the first attempt.
Explanation:
In the first attempt, since 75ml oxygen is produced in 3 minutes, the rate of oxygen production is r = volume of oxygen/time = 75 ml/3 min = 25 ml//min
In the second attempt, since 100ml oxygen is produced in 5 minutes, the rate of oxygen production is r' = volume of oxygen/time = 100 ml/5 min = 20 ml//min
Since r = 25 ml/min > r' = 20 ml/min, the speed of oxygen production is bigger in the first attempt.
1. Multiple Choice
How does altitude affect climate?
A.
The higher the altitude, the colder the climate will be.
B.
The lower the altitude, the colder the climate will be.
C.
The higher the altitude, the hotter the climate will be.****
D. Altitude is not related to climate.
2. How does latitude affect climate?
A.
Areas near the equator have cooler climates than areas far from the equator.
B.
Areas near the equator have warmer climates than areas far from the equator.
C.
Areas near the equator have four seasons.****
D.
Areas near the equator do not have any type of precipitation.
3. How does wind affect precipitation?
A.
Wind does not have any effect on precipitation.
B.
Winds that blow from over the land contain a lot of water vapor that will cause precipitation.****
C.
Winds that blow inland from oceans or large lakes contain very little water vapor that will cause precipitation.
D. Winds that blow inland from oceans or large lakes contain a lot of water vapor that will cause precipitation.
4. Sea and land breezes over a large region that change direction with the seasons are called
A.
windward.
B.
leeward.
C.
monsoons.****
D. storms.
(****= my answer)
plz cheak my answers!?
Answers
Answer:
#1 A
#2 B
#3 C
#4 c
Explanation:
#1 can give reference to a mountain the higher the altitude the colder it will get
#2 talking about climate not seasons per say. focus on climate answers
#3 wind carry moisture from the sea on to land which cause precipitation
#4 Monsoons is correct
18. How is the kinetic energy of molecules changing when the molecules move faster?
The kinetic energy ...
a
is not changing
b
depends on the molecules.
С
is decreasing.'
d
is increasing
Scroll for more
Answers
Answer:
d
Explanation:
the more movement the more energy
7. True or false. Where air masses collide, weather changes
Answers
Answer:true
Explanation:
which type of cell is shown in the diagram - a plant cell, a yeast cell or a bacterial cell
Answers
Answer:
bacterial cell plant cells dont have a tail
Explanation:
The type of cell shown in the diagram is the bacterial cell as plant cell do not have tails while bacteria have tail.
Bacteria are prokaryotic unicellular organisms. They have a relatively simple cell structure compared to eukaryotic cells. They also do not possess any membrane-bound organelles such as a nucleus. However, do they possess genetic material (DNA or RNA) in the intracellular space called the nucleoid.
Bacteria lack a membrane-bound nucleus and other internal structures and are therefore ranked among the unicellular life-forms called prokaryotes. Prokaryotes are the dominant living creatures on Earth, having been present for perhaps three-quarters of Earth history and having adapted to almost all available ecological habitats.
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In an exothermic reaction, chemical energy is converted to
1.thermal
2. mechanical
Answers
Answer:
thermal, I'm not 100% sure though.
Rank the following compounds from weakest intermolecular forces to strongest. Justify your answers.
H2S I2 N2 H2O
Answers
Answer:
N2-non polar<i2< H2s-polar<H2o-polar
Explanation:
If the temperature of a gas in a balloon remains constant but the pressure
is decreased, the volume of the balloon will
decrease
increase
remain the same
not enough information to predict
Answers
Answer:
increase
Explanation:
if the pressure goes down then the gas will spread out more, meaning the volume will increase
CAN SOMEONE HELP I WILL GIVE BRAINLIST PLEASE!
Answers
Answer:
water, wind, ice, gravity
Explanation:
bro needs help
32.5 grams of NaOH reacts with an excess of CO2
2NaOH(s) + CO2(g) ⇒ Na2CO3(s) + H20
What is the theoretical yield of Na2CO3 in grams?
*** I NEED YOU TO SHOW YOUR WORK BROS, I ALREADY HAVE THE ANSWER (43.1g) ***
Answers
Please help
How do Newton's lawd describe the motion of an object?
Answers
I need help with this question
Answers
Answer: atomic nucleus
Explanation:
PLEASEEE HELP ASAPPPPP

Answers
Answer: answer A
Explanation: because it gives more detail and a summarizations
If the Earth could no longer sustain human life, where could we go?
Answers
Answer:
There is no place in the solar system that can sustain humans except earth. Earth is the only planet that can sustain humans according to what we know and according to the technologies we have. We can live in Mars but the environment might not be suitable for growing vegetation and it might be hard for humans to live in Mars.
Explanation:
Hope this helped!
Explain whether smoke filling up a room is diffusion or not.
Answers
Answer:
It is diffusion
Explanation:
Diffusion occurs when particles move from relatively high concentration to relatively low
Answer:
it is diffusion
Explanation:
smoke rises from one corner of the room and spreads to the rest of the room, resulting in diffusion
The electron configuration for the Magnesium ION is the same as the configuration for which noble gas?
Answers
The correct noble gas electron configuration of Mg2+ is Ne.
Which type of force is the magnet using to move the nail?
A nail moving towards a magnet
A) Friction
B) Gravity
C) Pull
D) Push
Answers
Answer:
a
Explanation:
Answer:
Explanation:
gravity
If a substance is a bad conductor as a solid, but a good conductor as a liquid or when dissolved into water, which type of bond is holding the compound together?
Answers
The bond type in the substance is ionic bonding because, ionic compounds in their solid state are not conducting but the ions they furnish when dissolved in water conducts electricity.
What are ionic compounds ?Ionic compounds are formed between metals and nonmetals. Metals are electropositive and they can easily loss electrons to from cations. Metals donate electrons to the electron deficient non metals to achieve octet.
Ionic bonding is a strong electrostatic force between opposite charged ions. Hence this bond is stronger than other types of bond. This intact bonding make them bad conductors in the solid state.
However they are electrically conducting the molten state or when dissolved in water due to the presence of free ions and electrons in the solution.
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Does anyone know this?
Answers
Answer:
Not balanced. There are different number of atoms on each side of equation.
Explanation:
Given balanced chemical equation:
Chemical equation:
3C₂H₄ + 3O₂ → 4CO₂ + 6H₂O
The equation is not balanced because umber of moles of C, H and O are not balanced. It consist of six moles of C, 12 moles of H and six moles of oxygen on left side of equation while on right side there are 4 moles of C fourteen moles of oxygen and twelve moles of hydrogen present.
Balanced chemical equation:
C₂H₄ + 3O₂ → 2CO₂ + 2H₂O
Now the equation became balanced. There are two moles of carbon, four moles of hydrogen and six moles of oxygen are present on both side of equation.
can the element calcium be found in more than one state of matter?
Answers
Answer:
No
Explanation:
The element calcium be found in more than one state of matter ( Only in Solid state )
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According to the kinetic molecular theory, which statement describes the particles in a sample of an ideal gas
Answers
Explanation:
an ideal gas moves in constant, rapid motion
What types of inputs and outputs do these cell systems share
Answers
Answer:
The inputs of cellular respiration are glucose and oxygen. The outputs of cellular respiration are water, carbon dioxide
The input of cell systems share are glucose and oxygen. The output of cell systems share are carbon dioxide, energy and water.
What is a cell ?The smallest unit that can sustain life on its own and makes up all living things, including the body's tissues. The cell membrane, the nucleus, and the cytoplasm are the three primary components of a cell. The chemicals that enter and leave the cell are governed by the cell membrane, which encloses the cell.
The cell membrane, the nucleus, and the cytoplasm are the three components that make up a cell. Intricate arrangements of microscopic fibers and hundreds or even thousands of tiny, unique structures known as organelles can be found in the cytoplasm.
The system's inputs are the signals or data it receives, and its outputs are the signals or data it sends. As part of an activity, the phrase can also be employed; for example, to "perform I/O" is to carry out an input or output operation.
Thus, The input of cell systems share are glucose and oxygen. The output of cell systems share are carbon dioxide, energy and water.
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how do the structures of particles in substances vary?
Answers
Answer:
56
Explanation: