Explanation:
d
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Answer:
D
Explanation:
I have this test as well
Find the number of moles of argon in 534 g
of Argon
Answer:
13.4 mol Ar
General Formulas and Concepts:
Chemistry - Atomic Structure
Reading a Periodic TableUsing Dimensional AnalysisExplanation:
Step 1: Define
534 g Ar
Step 2: Identify Conversions
Molar Mass of Ar - 39.95 g/mol
Step 3: Convert
[tex]534 \ g \ Ar(\frac{1 \ mol \ Ar}{39.95 \ g \ Ar} )[/tex] = 13.3667 mol Ar
Step 4: Check
We are given 3 sig figs. Follow sig fig rules and round.
13.3667 mol Ar ≈ 13.4 mol Ar
Answer:
The number of moles in 452 grams of Argon is 13.31 moles.
Explanation:
can I please get help with it
Answer:
True
Explanation:
IT IS TRUE WIWJJWOWIWHW
Use the balanced equation given below to solve the following problem; Calculate the volume in liters of CO produced by the reaction of 175 g of Sb2O3.
Sb2O3 + 3 C --> 2 Sb + 3 CO
40.3 L CO
7.81 L CO
20.2 L CO
13.4 L CO
Answer: 40.3 L
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of} Sb_2O_3=\frac{175g}{291.5g/mol}=0.600moles[/tex]
[tex]Sb_2O_3+3C\rightarrow 2Sb+3CO[/tex]
According to stoichiometry :
1 moles of [tex]Sb_2O_3[/tex] produces = 3 moles of [tex]CO[/tex]
Thus 0.600 moles of [tex]Sb_2O_3[/tex] will produce=[tex]\frac{3}{1}\times 0.600=1.80moles[/tex] of [tex]CO[/tex]
Volume of [tex]CO=moles\times {\text {Molar volume}}=1.80moles\times 22.4L/mol=40.3L[/tex]
Thus 40.3 L of CO is produced.
Please help
As the temperature increases, the molecular motion of the molecules decreases and it
becomes difficult to overcome the polar attractions.
a. TRUE
b. FALSE
Which Bohr diagram is drawn INCORRECTLY?
0 iv
O i
Oii
Pls helppp
Answer:
It is indeed c (II) because there can only be 2 electrons on the first layer
Explanation:
What is the formula for the compound that contains Na+ and No3
Answer:
NaNO3
Explanation:
NO3^-1 has a charge of minus 1.
Na^+1 has a charge of +1
When they combine, the charges are not noted. You get NaNO3
Sodium Nitrate
Which of the following are possible characteristics for the element this atom represents?
A.
Hard, can be flattened by a hammer
B
A non-reactive colorless gas
C.
Dull, non-conductor of heat and electricity
D
Shiny silver, can be coiled into a wire
Answer:
B
Explanation:
Sorry if i'm wrong
1. How much energy (in KJ) is required to convert 50.0g of ice at – 30 ˚C to
steam at130˚C.
Answer:
How much heat energy required to convert following?
How much heat energy, in kilojoules, is required to convert 47.0 g of ice at -18.0 C to water at 25.0 C ?
Specific Heat of Ice - 2.09 j/g * c
This is how I did it and the answer is wrong...Please check and correct me
Q = m * Cice * Change in Temp
Q = (47.0 g)(2.09 J/g*c)(43) = 4222.6 J * 0.001 kj / j = 4.22 kj
can someone help me please
Answer:
c
Explanation:its the ansr
In carbon dioxide, how many grams of oxygen would there be if there are 24
grams of carbon?
a 55 g
b 73 g
c 64 g
d 88 g
Answer:
c. 64 grams
Explanation:
What is the proper combining ratio (by mass) for carbon to oxygen in the reaction that forms carbon dioxide (CO 2)? From the data given in question 1, since 64 grams of oxygen reacts with 24 grams of carbon, the ratio must be 64 to 24, which is 2.7 parts oxygen to 1 part carbon.
What is Newton's 1-3rd laws of motion? Give examples for each
Answer:
In the first law, an object will not change its motion unless a force acts on it
In the second law, the force on an object is equal to its mass times its acceleration
In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction.
Explanation:
Hope this helped :)
In science, all ideas are not tested with evidence from the natural world.
Question 4 options:
True
False
Answer:
i belive its trrue
Explanation:
Answer:
i think its false i hope this helps
Explanation:
What is responsible for the blue sky?
Answer:
The blue color of the sky is caused by the scattering of sunlight off the molecules of the atmosphere.
Explanation:
Answer:
sun shine
Explanation:
Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered more than the other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time
what is the average atomic mass of neon from this data ?
Answer:
The average atomic mass of neon20.18 amu.
3. What is found around the roots of some plants that turns nitrogen from the form we cannot use to the form we can use?
Answer:
Bacteria
Explanation:
Some plants, specifically leguminous plants form a symbiotic relationship with certain bacteria species called NITROGEN-FIXING BACTERIA in their root nodules. In this relationship, the bacteria species e.g nitrosomonas, nitrobacter etc help the plants fix atmospheric nitrogen (N2) or ammonium compounds, which are forms of nitrogen that are unusable to the plant into nitrates, a usable form.
Therefore, BACTERIA are the organisms found around the roots of these set of plants (legumes) that turns nitrogen from the form we cannot use to the form we can use.
help help help plsss
Answer:
4.58×10^3
3.72×10^7
Explanation:
3.8×10^2 =380
+ 4.2×10^3=4200
= 4580 = 4.58×10^3
Which element, represented by X, reacts with oxygen to produce the compound X2O?
Aluminum
Calcium
Argon
Lithium
Answer:
lithium
Explanation:
this is because lithium has a valency of 1 and oxygen has a valency of 2 thereby exchanging valency to create Li²0
What Is It?
Imagine you find a bowl filled
with clear liquid in your kitchen. List three liquids it might be. Describe how you could use the liquid's physical and chemical properties to determine which of the three it is.
Answer:
physical
Explanation: water can change from solid to liquid to a gas
3. Two substances, both liquids, start at the same temperature. You transfer
the same amount of energy out of both liquids, but substance 1 becomes a
solid before substance 2. Which substalice has a stronger molecular
attraction?
A Substance 1
B Substance 2
Pleas help I will give you Brainlyest
Answer:
Substance 1
Explanation:
Because if it becomes a solid BEFORE the other it means that the structure is more sound than the other substance. and if you add heat to something that becomes a solid it means it will come closer
I Hope this helps <3 and again i don't need the crown
2 KClO3 (s) → 2 KCl (s) + 3 O2 (g)
how many atoms are in 3.2 moles of KCl?
Answer:
If u use math why It will give u the answer like 3x3=9
Explanation:
Which substance is not produced during the electrolysis of concentrated aqueous sodium chloride?
A) Chlorine
B) Hydrogen
C) Sodium hydroxide
D) Sodium chloride
The substance is not produced during the electrolysis of concentrated aqueous sodium chloride is D) Sodium chloride
Which substance is produced for the duration of the electrolysis of concentrated aqueous sodium chloride?
while an electric current is handed via concentrated sodium chloride answer, hydrogen gasoline bureaucracy at the negative electrode, chlorine gas bureaucracy at the fantastic electrode, and an answer of sodium hydroxide also form.
What occurs whilst the concentrated answer of sodium chloride is electrolyzed?(a) when a concentrated solution of sodium chloride (brine) is electrolyzed, it gets decomposed. this is a decomposition reaction. the products of this reaction are sodium hydroxide, chlorine, and hydrogen.
Learn more about Sodium Chloride at https://brainly.com/question/24878544
#SPJ2
What are the three types of protist and how are they similar and how are they different (this is science but there is no tab for it)
Answer:
They are eukaryotic, which means they have a nucleus. Most have mitochondria
How do coastal sand dunes form in Florida?
Answer:
They are formed by windblown sand collecting around an obstruction. As organic matter is deposited by wind and waves, low herbs colonize the dune. As these plants collect more sand and organic matter, the dune increases in height becoming the fore dune.
What is the amplitude ?
Answer: The amplitude is a measure of the strength or intensity of the wave
Explanation: when looking at a sound wave, the amplitude will measure the loudness of the sound.
When drawing a covalent lewis dot diagram its important to ensure that:
A each atom is surrounded by 6 electrons
B all symbols are in lower case letters
C all the elements have a charge in the top right side
D each atom is surrounded by 8 electrons
the first question please!
Plz help
A candle burning is an example of
A. an endothermic change
B. a physical change
C. energy being taken in
D. an exothermic change
Answer:
D
Explanation: An exothermic change is Because it has heat.
What are interactions between flip flops and sulfuric acid
Which of the following is an ion?
Which of the following is an example of a chemical change?
a. freezing water to make ice.
b. a firework exploding.
c. breaking a glass bottle.
d. melting gold jewelry to make a gold bar.
Answer:
b. a firework exploding
Explanation: