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/mLWhat 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.
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!
two 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 ?
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.
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An reading of 8 on the pH scale is indicative of?
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.
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
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.
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build a prototype or test model of the invention
Is the gravity a black hole strong enough to keep light from escaping True or False
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)
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?
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.
Fill in the blank. (Copper has a charge of 2+)
Cu+ AgNO3 → Ag +
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.
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HELLPPPPPP PLEASEEEE!!!!!
What are gravitational forces?
Answer:
Gravity, or gravitation, is a natural phenomenon by which all things with mass or energy—including planets, stars, galaxies, and even light—are brought toward one another. On Earth, gravity gives weight to physical objects, and the Moon's gravity causes the ocean tides.
Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. ... On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects
The gravitational force is a force that attracts any two objects with mass. We call the gravitational force attractive because it always tries to pull masses together, it never pushes them apart. In fact, every object, including you, is pulling on every other object in the entire universe!
Gravitational force is the force that attracts to objects with mass. ... This forces tries to pull masses together, that is why attractive in nature. For example: When ball is thrown upwards it always come downwards after a certain height because the ball is pulled or attracted by the Earth's gravitation la force.
¯\_(ツ)_/¯
Answer:
Good Question!!! No one has found the answer to that question.
Explanation:
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
It would be A, Petroleum.
Hope this helped!
-William
balance the following equation FeC²+Cl². FeCl³
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:
20 points to whoever can answer these 3 questions correctly
Answer:
1.true
2.2
3. false
Explanation:
.........
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
Answer:
C. Hardness
Explanation:
A P E X
If I have 5.275 moles of gas at a temperature of 575 K and a pressure of 7.75 atmospheres, what is the volume of the gas?
Answer:
hi
Explanation:
Help plz pozlzlzksj help
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!
Which of the following keeps the planets in their orbits in the Solar System?
A friction
B gravity
C magnetism
D pressure
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! !!
How can a paperclip float on water? Use the
word 'surface tension' in your answer,
20 points to whoever can answer these 3 questions correctly
Pt. 2
Answer:
1. AlBr3
2. 2
3. sulfuric acid
Explanation:
What two ways you can increase the frictional force between two objects?
( 8th grade )
Frictional force between two objects can be increased by:
i) making the surfaces rough
ii) increasing the mass of the object that ks moving.
Hope it helps you.
How much heat does it take to move 45 g of ice at -25°C to water at 31°C?
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
Answer:
true
Explanation:
hope this helps, I took the test too
In a rate law the rate constant k, depends on which condition?
Answer:
Temperature is the awnser
elect the correct answer.
Which atom or ion is the largest?
A.
K
B.
K+
C.
Ca
D.
Ca2+
E.
Li
Answer:
Ca2+ I'm not sure hahahahhahah
Answer:
Ca
hope it is helpful..
What are the intermediate chemical equations for this reaction
Reaction 1
Reaction 2
Reaction 3
Answer:
REACTION 2
Explanation:
BEACUSE IT SYA IN THE QUESTION
Answer:
Reaction 1: Mg(s) + 2HCl(aq) -> MgCl2(aq) + H2(g)
Reaction 2: MgO(s) + 2HCl(aq) -> MgCl2(aq) + H2O(l)
Reaction 3: H2(g) + ½ O2(g) -> H2O(l)
Explanation:
ok so can someone help me with my guy problems
Answer:
ofc! whats ur question my guy
Explanation:
Answer:
sure
Explanation:
Heellllp plzz
thanks
Answer:
Tap test
Explanation:
Answer:
the rest dont sound as reasonable to me so i would say C
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?
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.
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which question is the student most likely trying to answer?
Answer:
A
Explanation:
Balance the following equation:
Sg + F2 --> SF
Answer:
S+ F2 ⇒ SF
S=1
F =2
So S +F2 ......... 2SF
2S + F2 ..........2SF this is a balance equation
S=2 F=2 in left side s=2 F = 2 in rightside
Explanation:⇆
⇒