Answers
Answer:
Explanation:
You can't award 20 points once you have awarded 5.
One
2K + Cl2 ==> 2KCl
It's True
There are 2 Ks and Cl2 has 2 atoms making up on the left.
On the right, 1 molecule of KCl has 1 Potassium and 1 Cl. But there are 2 molecules so between the two of them, there's 2 Potassiums and 2 Cl
Two
The reactant side is the Left side. Cl2 means there are 2 Cl atoms making Cl2. Answer B
Three
False: There are 2 but read below.
I really don't know how to answer that. It's not qualified enough. There are a total of 2 Chlorines on the right hand side when there are 2 molecules. I think you are intended to answer False, but don't be surprised if you get it wrong.
Related Questions
A solution of 0.220 g of KIO3 is prepared in 50 ml volumetric flask. 2.00 mL of this solution is pipetted into a beaker with 8.00 ml distilled water, to give 10 ml of diluted KIO3. To this, 10.00 mL of starch sulfite was added. What would be the initial concentration of IO3- in this final solution
Answers
Answer:
0.00044 g/mL
Explanation:
First, 0.220 g of KIO₃ are dissolved in 50 mL, so the concentration at this point is:
0.220 g / 50 mL = 0.0044 g/mLThen 2.00 mL of this solution are added to 8.00 mL of water (final volume = 10.00 mL). We calculate the concentration of the resulting solution:
0.0044 g/mL * 2.00mL / 10.00mL = 0.00088 g/mLFinally, to this 10 mL solution, another 10.00 mL were added. Thus the KIO₃ (or IO₃⁻) concentration is:
0.00088 g/mL * 10.00mL / 20.00mL = 0.00044 g/mLtwo oxides, X and Y are added seperately to dilute sulfuric acid and dilute sodium hydroxide. X reacts with dilute sulfuric acid but Y does not react. Y reacts with aqueous sodium hydroxide but X does not react. which type of oxide are X and Y ?
Answers
Answer:
c
Explanation:
x basic and metallic while y is acidic
The study of chemicals is called chemistry.
The correct answer is B.
The compound which has oxygen in it is called oxide. According to the question, the element is react with the acid and base.
The X only reacts with the acidic compound but not basic compound hence the element X is basic in nature. while Y only reacts with the basic compound, not X, hence the Y element is acidic in nature.
Therefore, the correct answer is B.
For more information, refer to the link:-
https://brainly.com/question/14698383
During ANY type of phase change, which of the following is TRUE? *
1. The temperature changes
2. The energy increases
3. The energy decreases
4. The temperature stays the same
Answers
Fill in the blank. (Copper has a charge of 2+)
Cu+ AgNO3 → Ag +
Answers
Answer:
Cu(NO3)2
Explanation:
Cu+AgNO3--->Ag+Cu(NO3)2
[tex]Cu+AgNO_3[/tex] → [tex]Ag+Cu(NO_3)_2[/tex] is the complete reaction.
What is a chemical reaction?A chemical change occurs when two or more substances combine to form a new substance.
[tex]Cu+AgNO_3[/tex] → [tex]Ag+Cu(NO_3)_2[/tex] is the complete reaction.
Copper and silver nitrate react to form cupric nitrate and silver.
Learn more about the chemical reactions here:
https://brainly.com/question/3461108
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A thick, oily liquid found deep in the earth that is refined and used as a source for gasoline is called _____________?
Petroleum
Reserve
Lumber
Coal
Answers
It would be A, Petroleum.
Hope this helped!
-William
An reading of 8 on the pH scale is indicative of?
Answers
Answer:
Basic or alkaline
Explanation:
ph 7 is neutral
below 7 is acidic
above 7 is basic or alkaline
Answer:
[tex]\boxed {\boxed {\sf Weak \ base}}[/tex]
Explanation:
The pH scale which classifies a solution's acidity or basicity.
A pH below 7 is acidic. This means it has more hydrogen ions. A pH equal to 7 is neutral. This has equal hydrogen and hydroxide ions.A pH above 7 is basic. This has more hydroxide ions.We are given a reading of 8. This is above 7, but not much greater. Therefore, it could be classified as a weak base.
Is the gravity a black hole strong enough to keep light from escaping True or False
Answers
Answer:
The gravitational pull of a black hole is so strong that nothing, not even light, can escape once it gets too close. ... Moving at close to the speed of light, these particles ricochet off the event horizon and get hurled outward along the black hole's axis of rotation
(True)
HELLPPPPPP PLEASEEEE!!!!!
Answers
(This is because the molecules gain more heat and therefore more kinetic energy)
The last one is lose energy
(This is because there is now less heat and therefore less energy)
2. Lose energy
20 points to whoever can answer these 3 questions correctly
Answers
Answer:
1.true
2.2
3. false
Explanation:
.........
Please please help
1. If you have 400 grams of water, how many moles do you have?
2. If you have 300 grams of carbon, how many moles do you have?
Answers
Answer: 6 moles of Carbon.
Explanation: One mole of Carbon is equal to 12 grams of Carbon, so you would divide 72 by 12 and the answer would be 6.
In a flexible container, when the temperature of a gas increases, the volume of the gas will increase.
Please select the best answer from the choices provided
T
F
Answers
Answer:
true
Explanation:
hope this helps, I took the test too
please help i don’t know this at all i am in a test
Answers
What does 10% humidity in a weather report indicate?
A)the level of humidity is high.
B)the level of humidity is low.
C)the level of humidity is moderate.
D)the air can not hold anymore water.
Answers
Answer:
B
the humidity is the % of water in the air and it is out of 100% of the air. so 10/100 is low
Answer:
B
Explanation:
30%-50% is considered moderate. Anything below 30% is considered dry, anything above 50% is considered high. I hope this helps!
Heellllp plzz
thanks
Answers
Answer:
Tap test
Explanation:
Answer:
the rest dont sound as reasonable to me so i would say C
Explanation:
balance the following equation FeC²+Cl². FeCl³
Answers
Answer:
this equation is not proper see that where is the reactant.
Explanation:
give give a proper question and I will
if fecl2 + c2 gives a fecl3 where does the carbon compound go
Answer:
2FeCl2 + Cl2 → 2FeCl3
Explanation:
HELP ASAP!!!!!!!
Nieko purchases a box of granola cereal that has a mass of 0.312 kg. When he gets
home, he sorts the cereal into groups: oats, raisins, and nuts. Next, he measures the
mass of each group. What will Nieko find when he adds together the mass of each
group?
Answers
Answer:
girlll we got da same question we need help
Nieko purchases a box of granola cereal that has a mass of 0.312 kg, then according to law of conservation of mass, the mass of each group is 0.312 kg.
What is law of conservation of mass?According to law of conservation of mass the mass in isolated system can neither be created nor destroyed by chemical reaction and physical transformation but it transfer from one form to another.
When wood burn the mass of soot, gases and ashes is equal to the original mass of charcoal and the oxygen when it first created is one of the best example of law of conservation of mass.
Thus, Nieko purchases a box of granola cereal that has a mass of 0.312 kg, then according to law of conservation of mass, the mass of each group is 0.312 kg.
To learn more about law of conservation of mass, refer to the link below:
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ok so can someone help me with my guy problems
Answers
Answer:
ofc! whats ur question my guy
Explanation:
Answer:
sure
Explanation:
which question is the student most likely trying to answer?
Answers
Answer:
A
Explanation:
2. Each type of atom is called an element. Which part of the atom give the
atoms its Identity?
Answers
The smallest particle of an element which is indivisible and takes part is chemical reaction as a whole without division is called an atom.
the three fundamental particles that identify the atoms are protons, neutrons and electrons.
build a prototype or test model of the invention
Answers
20 points to whoever can answer these 3 questions correctly
Pt. 2
Answers
Answer:
1. AlBr3
2. 2
3. sulfuric acid
Explanation:
Which of the following keeps the planets in their orbits in the Solar System?
A friction
B gravity
C magnetism
D pressure
Answers
Answer:
B- gravity
Explanation:
Gravity is a force in which everything in the universe is trying to pull everyother thing towards themsef. Here, the sun's gravity keeps the planet in orbit.
I hope im right! !!
1. Which of the following best explains the motion of the box on the table?
Answers
Answer:
The box is at rest
Explanation:
not moving object
In order to become a chemically stable ion, a neutral atom of sodium will _______.
A. lose one electron
B. lose two electrons
C. gain two electrons
D. gain one electron
Answers
Answer:
D. gain one electron
Explanation:
In order to become a chemically stable ion, a neutral atom of sodium will gain one electron. Therefore, the correct option is option D.
What is chemical stability?Chemical stability in chemistry refers to a chemical system's thermodynamic stability. When a system reaches its lowest energy state or in thermodynamic equilibrium with its surroundings, thermodynamic stability occurs.
It could be a spontaneous process when the total number of atoms or molecules in a given shape is conserved despite the fact that individual particles or atoms change forms. In order to become a chemically stable ion, a neutral atom of sodium will gain one electron.
Therefore, the correct option is option D.
To know more about chemical stability, here:
https://brainly.com/question/13107538
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elect the correct answer.
Which atom or ion is the largest?
A.
K
B.
K+
C.
Ca
D.
Ca2+
E.
Li
Answers
Answer:
Ca2+ I'm not sure hahahahhahah
Answer:
Ca
hope it is helpful..
Question 3 of 7
Which property of a mineral determines whether it can scratch a piece of
calcite?
a. streak
b. luster
c. hardness
d. reactivity
Answers
Answer:
C. Hardness
Explanation:
A P E X
How much heat does it take to move 45 g of ice at -25°C to water at 31°C?
Answers
In a rate law the rate constant k, depends on which condition?
Answers
Answer:
Temperature is the awnser
How can a paperclip float on water? Use the
word 'surface tension' in your answer,
Answers
Help plz pozlzlzksj help
Answers
Answer:
increase moles of gas inside
Explanation:
Answer:
Its ( C )- Decrease the temperature of the gas inside the basketball
Explanation:
To make sure the balloon doesn't inflate so much it bursts you should NOT completely inflate the balloons when you know the temperature will increase!
