Answer:
KCI
Explanation:
Answer:
KCI
Explanation:
the most massive will have the smallest percent of Cl
Based on the table above, which amount of a compound dissolved in 100 grams of water at the stated temperature represents a system at equilibrium?
Select one:
a. 40 g NaCl at 70 degrees Celsius
b. 20 g KClO3 at 70 degrees Celsius
c. 80 g NaNO3at 10 degrees Celsius
d. 80 g Pb(NO3)2 at 30 degrees Celsius
Answer:
C. 80g Nano3 at 10 degrees Celsius
Explanation:
I just took the test
80 g NaNO₃ at 10 degrees Celsius of a compound dissolved in 100 grams of water at the stated temperature represents a system at equilibrium. Therefore, option C is correct.
What is solubility ?The maximum quantity of a chemical that will dissolve in a given amount of solvent at a particular temperature is referred to as its solubility.
Different compounds have very varying solubilities, which is a feature of a particular solute-solvent pair.
A substance's physical and chemical characteristics affect how soluble it is. A few other factors and circumstances can also influence it. A few of these are: temperature, pressure, kind of binding, and forces between the particles.
A system is said to be in equilibrium when 80 grammes of a substance, dissolved in 100 grams of water at 10 degrees Celsius.
Thus, option C is correct.
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What coefficient should go in front of the hydrogen peroxide (H2O2 ) molecule to make the chemical equation balanced? ___ H2O2 ➞ 2 H2O + O2
Answer:
2
Explanation:
H2O2 ➞ 2 H2O + O2
The reaction is currently not balanced because the number of atoms on the reactant side is not equal to that of the product side
Hydrogen
Reactant = 2 Product = 4
Oxygen
Reactant = 2 Product = 4
Adding 2 to H2O2 balances the reaction as the number of atoms of both elements are now balanced on both sides of the equation
2H2O2 ➞ 2 H2O + O2
6) The following questions refer to F2 and Cl2.
a. Draw the molecular model (space-filling or ball-and-stick) that would
provide the best means for comparing the differences in bond length and
bond energy.
b. Which structure has the longest bond length? Justify your answer.
c. Which bond has the greatest bond energy? Justify your answer.
d. Which structure has the least potential energy associated with its bond?
Justify your answer.
Answer:
chill
Explanation:
This image models…
diffraction
reflection
refraction
absorption
Answer:
reflection is correct answer by my views
please help me i’m struggling
Answeeeeer:
A. cell
Explanation:
Since A is the smallest in the chart, that would correspond to the cell because thats the smallest out of Tissue, Organ and Organism.
What are two properties that make a metal a good choice to use a wire in electronics? *
Answer:
Explanation:
The two properties that make a metal a good choice to use a wire in electronics are :
ductility conductivityHas anyone done this???!!!
Answer:
top one is anaphase and the middle one is cytokinesis can't see enough of the bottom one to tell
Explanation:
Which type of plate boundary is associated with seafloor spreading at the source of the spread: convergent, divergent, or transform?
Answer:
The answer is divergent
Think about exothermic reactions. Think about endothermic reactions. Compare and contrast the two. Give examples from the readings in your comparison. Also give examples from what you may already know
Answer:
any combustion reaction.
a neutralization reaction.
rusting of iron (rust steel wool with vinegar)
the thermite reaction.
reaction between water and calcium chloride.
reaction between sodium sulfite and bleach (dilute sodium hypochlorite)
reaction between potassium permanganate and glycerol.
Explanation:
In a reaction between vinegar and antacid tablets, the antacid is the limiting reagent.
At constant pressure and temperature, three tablets produce 600 cm3
of gas. What
volume will six tablets produce?
1,200 cm3
600 cm3
800 cm3
300 cm3
Answer:
thanks for share to use a brainly tutor or if any help... I want to say is the answer would be: 800 cm ^3
Explanation:
thank you!
have a great week
The volume is generally measured in Liters, milliliters, cm³, m³, etc. At constant pressure and temperature, the volume produced by six tablets will be 1200 cm³. The correct option is A.
What is volume?The term volume denotes the capacity that an object can hold. For example if a beaker can hold 100 mL of water then the volume of the beaker is said to be 100 mL. It is represented by the symbol 'V'.
The three dimensional space occupied by the matter is given by the term volume. The SI unit of volume is m³.
Here the volume of three tablets is 600 cm³. Then the volume of one tablet is:
V = 600 / 3 = 200 cm³
Hence the volume produced by six tablets is:
V = 200 × 6 = 1200 cm³.
Thus the volume of six tablets is 1200 cm³.
Thus the correct option is A.
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If a radioactive source has a half life of 2 hours how long will it take for the activity to go from 200 to 25?
Answer:
It takes 6h to the radioactive source decrease its activity from 200 to 25
Explanation:
The equation that describes the readioactive decay is:
Ln [A] = -kt + Ln [A]₀
Where [A] could be taken as activity of the source after time t, [A]₀ is initial activity and k is decay constant.
Decay constant could be written as:
k = ln2 / Half-life
k = ln 2 / 2h
k = 0.3466h⁻¹
Replacing in decay equation:
Ln [25] = -0.3466h⁻¹t + Ln [200]
-2.0794 = -0.3466h⁻¹t
6h = t
It takes 6h to the radioactive source decrease its activity from 200 to 25
Thomas sits half way down a grassy slope. What force stopped him slamming down
someone please help... ill give you a heart a five star rating and the brainliest answer
What is the percent of oxygen in C6H12O6?
Answer and Explanation:
C6 H12 O6=6×16=96g/mol
96/180×100=53%
How does water pressure relate to depth?
PLZ HELP THIS IS DUE TODAY AND ILL GIVE BRAINLIEST
Answer:
particle size
Explanation:
because except that all are the examples that the speed of dissolving can be changed
Answer:
Adding water
Explanation:
When a solid is dissolving the speed cannot be changed by adding water
Calculate the amount of work done in lifting a heavy load of 50kg up to the height of 3m?
amount of work done is equal to l/h
so 50/3=16.66667
round your ans to 2 significant figure
so your ans will be 17m/kg
total number of atoms in 4so2
Answer:
10
s=8
o=2
Hope it helps to
How many grams are in 0.75 moles of Fe
Answer:
41.88375 g Fe
Explanation:
Using stoichiometry, we can do this problem. First, we put our given. Then we create an equation using the molar mass of Fe (found on the periodic table, which was 55.845 g Fe), and the resulting equation is:
[tex]0.75 mol Fe * \frac{55.845 g Fe}{1 mol Fe}[/tex]
The mol Fe's cancel, and leave us with:
41.88375 g Fe
Good luck.
Question 19 Multiple Choice Worth 3 points)
(06.04 MC)
What forensic scientist established the 'Body Farm' to study the ways bodies decompose under different circumstances?
Matheiu Orfila
Sir Edward Henry
Phillipe Locard
Bill Bass
Answer:
The answer is D Bill Bass
Explanation:
Remember it from the lesson and I took the test.
You live 10.13 km from school. Convert kilometres to meters.
Answer:
10130
Explanation:
there are 1000 m in a km
Answer:
10130 meters
Explanation:
Someone plz help me I can’t get out
Answer:
Refresh your page or if that doesn't work, close your tab and try to click it again or restart your pc
Explanation:
Answer:if you can't close the tabs I suggest try and restart the computer
Explanation:
A violent disturbance in the atmosphere is a
eye of hurricane
surge
front
storm
Answer: Storm surge
Explanation:
How many liters of hydrogen are required to react completely with 2.4L of oxygen to form water? 2H2 + O2 --> 2H2O
Answer:
2.4 mole of oxygen will react with 2.4 moles of hydrogen
Explanation:
As we know
1 liter = 1000 grams
2H2 + O2 --> 2H2O
Weight of H2 molecule = 2.016 g/mol
Weight of water = 18.01 gram /l
2 mole of oxygen react with 2 mole of H2
2.4 mole of oxygen will react with 2.4 moles of hydrogen
How many atoms of cobalt are in 4 moles of cobalt?
2 × 10²⁴ atoms Co
General Formulas and Concepts:Math
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightChemistry
Atomic Structure
Reading a Periodic TableAvogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.Stoichiometry
Using Dimensional AnalysisExplanation:Step 1: Define
4 mol Co (Cobalt)
Step 2: Identify Conversions
Avogadro's Number
Step 3: Convert
Set up: [tex]\displaystyle 4 \ mol \ Co(\frac{6.022 \cdot 10^{23} \ atoms \ Co}{1 \ mol \ Co})[/tex]Multiply/Divide: [tex]\displaystyle 2.4088 \cdot 10^{24} \ atoms \ Co[/tex]Step 4: Check
Follow sig fig rules and round. We are given 1 sig fig.
2.4088 × 10²⁴ atoms Co ≈ 2 × 10²⁴ atoms Co
can we stir silver nitrate solution with copper spoon? why or why not? support your answer with reason.
↪ Hello miss "galaxyu035" here's your answer for the question you wrote.
Answer :
No, we cannot stir silver nitrate solution with a copper spoon because , copper is more reactive than silver. Thus,it would displace silver from the silver nitrate solution forming copper nitrate.
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A cup of coffee is made in the morning by pouring water ov er ground up coffee beans in a piece of paper and by collecting the brown liquid that comes through. Which techniques used
Answer: Filtration technique
Explanation:
The technique used here is called filtration.
Filtration,is a physical separation process that separates a mixture of an insoluble solid from a liquid ( acting as the solvent) by the use of a filter barrier that allows only the fluid to pass through.
In the case from the question,
As water is poured over the ground coffee, it forms a mixture of which the insoluble solid is the coffee grounds, the water is the liquid and the filter barrier is the piece of paper which allows only the brown liquid coffee to pass through as the filtrate.
All objects in space obey the law of ________.
Answer:
physics, including the laws of gravity
Explanation:
1 Atoms of the same element with different numbers of neutrons are defined as:
o
neutrons
O
isotopes
O
elements
O
compounds
Answer:
The answer is B Isotopes
Plants cannot grow too close together because their Blank______ need to spread out and absorb nutrients from the soil.
their roots need room to spread out