Above is a solubility curve for KNO3.
Solubility has nothing to do with the speed of dissolving; it's a measure of how much salt will dissolve at a given temperature.
The y-axis of the graph shows you how much KNO3 will dissolve in 100 g of water. In other words, it tells you the maximum amount of solute that will dissolve at different temperatures.
The x-axis tells you the minimum temperature needed to dissolve different amounts of KNO3 in 100 g of water.
Approximately how many grams of KNO3 will dissolve in 100 g water at 0 degrees Celsius?
Type in the number only; no units. Round your answer to the nearest whole number.
WILL MARK BRAINLIEST!!!
Answers
About 9.8 g of potassium nitrate will dissolve in about 100 g of water at 0 degrees Celsius.
What is solubility curve?The term solubility curve refers to a plot of the concentration of a substance in solution against temperature. We can easily read off the amount of substance that has dissolved in solution using the solubility curve.
Looking at the solubility curve as shown, we can see that about 9.8 g of potassium nitrate will dissolve in about 100 g of water at 0 degrees Celsius.
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Related Questions
______ The total number of protons and neutrons in the nucleus.
A. Atomic Number
B. Mass number
C. Atomic mass
And why? I give Brainliest!
Answers
Answer:
A. Atomic Number
Explanation:
The mass number is used to calculate the number of neutrons & electrons in one atom of an element. In order to calculate the number of neutrons you must subtract the atomic number from the atomic mass.
help !!!!!!!!!!!!!!!!!!!
Answers
Let me know if you have any questions
describe the relationship between kinetic energy and mass
Answers
Answer:
Kinetic energy has a direct relationship with mass, meaning that as mass increases so does the Kinetic Energy of an object. ... Objects with greater mass can have more kinetic energy even if they are moving more slowly, and objects moving at much greater speeds can have more kinetic energy even if they have less mass
If a string of Christmas lights goes out entirely when one light bulb burns out, the bulbs are connected in parallel with each other.
True
or
False
Answers
Answer:
False
Explanation:
A series circuit is one that is all connected
An anion reaction with a metal and forms a -3 charge. How many atoms of the metal would be required if the element is in group 1 on the periodic table?
Answers
Answer:
3 atoms
Explanation:
The number of atoms of the metal that would be required as it forms an anionic charge of -3 is 3 atoms.
Elements in group 1 generally have a charge of +1. They have a valency of 1
By the virtue of this;
It will take 3 atoms of a group one element to combine with an anion with a -3 charge on it.
This way, the ionic bond forms and the compound becomes neutral.
Calculate the molarity of a solution prepared by dissolving 13.0 g of Na2CrO4 in enough water to produce a solution with a volume of 800. mL .
Express the molarity to three significant digits.
Answers
Answer:
molar mass sodium chromate = 162g
12.6g ÷ 162g/mole = moles sodium chromate (This is the solute)
molalrity or M = moles solute ÷ lliters of solution (You'll have to change given mL to L)
Select the correct answer from A, B, C, D & E for each statement given below:
A: Anthracite B: Diamond
C: Carbogen D: Urea E: Lampblack
1. An allotrope of carbon used as a tip for deep boring drills.
2. The type of coal with the highest carbon content.
3. An allotrope of carbon, obtained by burning kerosene oil in a limited supply of air.
4. A nitrogenous fertilizer obtained from carbon dioxide.
5. A compound which finds use for a victim of carbon monoxide poisoning.
Answers
Answer:
Didn't know the answer, sorry.
Please Help!!
The covalent bonds within a molecule are (very strong/weak). However it requires (more/less) energy to melt a molecular compound than an ionic compound?
This is because the attractive forces between individual molecules are (weaker/stronger) than the forces between ions in an ionic compound.
choose the correct answer in the parentheses.
Answers
Answer: The covalent bonds within a molecule are very (strong). However it requires (less) energy to melt a molecular compound than an ionic compound.
This is because the attractive forces between individual molecules are (weaker) than the forces between ions in an ionic compound.
The term chemical bond generally refer to the attractive force which holds the respective ions or atoms of a molecular substance. Bonding in the compounds helps to attain the stability.
What is a covalent bond?A bond which is formed by the sharing of an electron pair among the atoms is known as the covalent bond. The concept of covalent bond was introduced by G.N Lewis in 1916.
An ionic bond is generally formed by the transfer of one or more electrons from one atom to another. In an ionic bond the positive and negative ions are held together by the electrostatic forces of attraction.
The ionic compounds have high melting and boiling points and in order to break the ionic bonds there is a need to supply large amount of energy than the covalent bonds. Thus ionic compounds are found to be stronger than the covalent compounds.
The covalent bonds within a molecule are (very strong) and it requires (less) energy to melt a molecular compound. The attractive forces between individual molecules are (weaker) than the forces between ions in an ionic compound.
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Which environmental conditions contribute most to the spread of bacteria?
O A. cold temperatures and low humidity
B. warm temperatures and low humidity
oc, cold temperatures and high humidity
O
D. warm temperatures and high humidity
Answers
Explanation: Bacteria thrives in warm and moist environments.
describe Transpiration
Answers
Answer:
is the process of water movement through a plant and its evaporation from aerial parts, such as leaves stems and flowers.
Answer:
well in easy terms... its just like the loss of water from the leaves or other parts of a plant due to evaporation
Explanation:
Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism.
3AgBr + GaPO4 = Ag3PO4 + GaBr3
1. How many grams of Ag3PO4 are produced from the use of 10.0 moles of GaPO4?
2. How many grams of AgBr are needed to produce 12 moles of GaBr3?
3. How many grams of GaBr3 are produced from the reaction of 15 moles of GaPO4?
Answers
Answer:
1.mass of Ag3PO4=4185.8g
2.mass of AgBr=6732g
Which option below will have a charge of negative 3?
A. Two electrons and five protons
B. Two electrons and three protons
C. Five electrons and two protons
D. Three electrons and two protons
Answers
Answer:
C
Explanation:
When the electron is greater than proton the atom will be negatively charged.
So, 2-5= -3
Hope this helped you!
But im not sure
Given 35.0 grams of aluminum at 22.0 °C. What will be the final temperature of the Al if 300.0 joules of heat energy is added to the Al? (The specific heat of Al is 0.217 cal/g°C)
Answers
so 300= (35)(0.217)(F-22)
Analyses of mutations show they only result in variations in?
Answers
Answer:
Genetic variation
Explanation:
measure of the genetic differences that exist within a population.
What is the relationship between the molecular mass and the molar mass of a substance?
Answers
Answer:
That is, the molar mass of a substance is the mass (in grams per mole) of 6.022 × 10 23 atoms, molecules, or formula units of that substance. In each case, the number of grams in 1 mol is the same as the number of atomic mass units that describe the atomic mass, the molecular mass, or the formula mass, respectively.
Answer:
The molar mass of a substance is the mass (in grams per mole) of 6.022 x [tex]10^{23}[/tex] atoms, molecules, or formula units of that substance.
Explanation:
In each case, the number of grams in 1 mol is the same as the number of atomic mass units that describe the atomic mass, the molecular mass, or the formula mass, respectively.
how do we separate cork and lead
Answers
Answer:
water exposure because it extracts millennials which is a product
PLEASEEEEE HELPPPPPPPP MEEEEEEEEEEEEEEEE
Answers
Answer pls:)
What is the mass of 8.944 x 1018 iron atoms in cg?
Answers
The ocean floor, some parts of which get no sunlight, is the *
Answers
Answer:
Aphotic zone
Explanation:
If the reaction of 91.3 grams of C3H6 produces a 81.3% yield, how many grams of CO2 would be produced?
Answers
Answer:
81.3 a
Explanation:
Just search up answers on wolframalpha.com
Which of the following is NOT a way unbalanced forces can cause an object to change its motion?
A. changing the object's direction
B. stop the obect from moving
C. the object's motion stays constant
D. start the object moving
Answers
What is the primary intermolecular force the exist between molecules of carbon tetrachloride?
Answers
Answer:
Carbon tetrachloride is non-polar and so the only kind of force that can exist is induced dipole.
(EASY POINTS!!!!!!!!!!!!!!!)How do we change the world... one random act of kindness at a time
Answers
Answer:
less polution
Explanation:
URGENT!
(a) A gas' pressure is 765 torr at 296k. At what temperature will the pressure be 560. torr?
(b) Which gas law is being represented above?
Boyle's Law, Charle's Law, Gay-Lussac's Law?
Answer !BOTH! questions.
Answers
Answer:
GAY-LUSSAC'S LAW.
Explanation:
P1 = 765 torr
T1 = 23°C = 296K
P2 = 560. torr
T2 = ?
(765 torr)/(296K) = (560. torr)/ T2
T2 = 226 K = -57°C
Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore the new temperature is -57°C. the law that is used over here is Gay-Lussac's Law.
What is ideal gas equation?Ideal gas equation is the mathematical expression that relates pressure volume and temperature. Ideal gas is only for ideal gas.
Mathematically the relation between Pressure, volume and temperature can be given as
PV=nRT
where,
P = pressure of gas
V= volume of gas
n =number of moles of gas
T =temperature of gas
R = Gas constant = 0.0821 L.atm/K.mol
P1 = 765 torr
T1 = 23°C = 296K
P2 = 560. torr
T2 = ?
Applying Gay-Lussac's Law
(765 torr)/(296K) = (560. torr)/ T2
T2 = 226 K = -57°C
Therefore the new temperature is -57°C. the law that is used over here is Gay-Lussac's Law.
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What will lithium and bromine make when they bond
Answers
Answer:
they will form a compound
Answer:
When lithium and bromine bond it makes lithium bromide.
What mass of krypton gas has a volume of 2.33 L at 53°C and 311 kPa?
Answers
i have no clue what so ever sorry
Answer:
22.35
>:) now go show your science teacher you have the smart
What do scientists do?
A. They make sure all facts fit scientific theories.
B. They make ethical decisions for the government.
C. They learn about the world through observation.
D. They use their knowledge to make public policy.
Answers
Scientists learn learn about the world through observation which helps in making scientific theories.
What are observations?
Observations are defined as a set of statements or facts which are recorded while conducting an experiment.Observations are made through sensing changes in the variables of the experiment.
It is specifically defined as an act of knowing or recording the changes in the variables of the experiment.Recording observations holds importance as recording observations avoid the experiment to be repeated over and over again.
It is important to note down observations so that the testing of hypothesis is made easier.There are four types of observations .Observations need to be descriptive and must be written in complete sentences and should include all the numerical data of the experiment.
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7. Put the following elements in order from smallest to largest atomic radius and explain
why:
C.0, Sn, Sr
Answers
Answer:
O, C, Sn, Sr
Explanation:
As per the periodic table trends, atomic radius of an atom deceases from left to right and increases down a group this is so because across a period or from left to right, number of protons increases that increases the nuclear charge and nuclear radius decreases. Down the group, atomic radius increases because energy level increases and distance between nucleus and outermost orbital increases.
The elements in order from smallest to largest atomic radius are:
O, C, Sn, Sr because as per the periodic table trends, oxygen (O) fall into right side of Carbon (C) in the periodic table and Strontium (Sn) and Tin (Sn) fall into down the group where Tin (Sn) is on the right side of Strontium (Sn).
Hence, the correct order is "O, C, Sn, Sr".
Give an example of an element which was named as honour to a scientist!!
Answers
Explanation:
1) Einsteinium
2) Albert Einstein
Answer:
Einsteinium, Rutherfordium, Nobelium, Curium etc are some examples of elements named after scientists
Ninety-five percent of igneous rocks
and metamorphic rocks are below
Earth's surface. Why is this true?
Answers
Answer:
This is so cause ...
Igneous rocks are formed when the molten material cools and hardens
and
Metamorphic rocks form when they are subjected to high temperatures and the great pressure of the rock layers above it.
So most of these rocks are found beneath the earth''s crust
(I hope im right... this might not be the perfect answer... but this as close as I can get.. I hope it usefull for u )
The given statement is true because igneous and metamorphic rocks are formed through processes that typically occur deep within the Earth's crust or mantle.
What are igneous rocks ?Igneous rocks are formed from molten magma that cools and solidifies beneath the Earth's surface, while metamorphic rocks are formed from existing rocks that are subjected to intense heat and pressure deep within the Earth.
After their formation, these rocks may remain buried beneath the Earth's surface due to ongoing geological processes such as plate tectonics, where rocks are pushed deeper into the Earth's mantle over time.
Additionally, erosion and weathering can expose rocks at the Earth's surface, but the majority of the exposed rocks tend to be sedimentary rocks rather than igneous or metamorphic rocks.
As a result, the vast majority of igneous and metamorphic rocks remain buried deep within the Earth's crust and mantle, making up the majority of the Earth's crust beneath the surface.
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