Answer:
1.4 mol
Explanation:
that my i got i was doing for it
Why do rats like cheese? <>-<> Im freaking out here dudes
Answer:
because its yellow
Explanation:
because rats like yellow
Is it a model answer key
Answer:
is what a model answer key
I am going to go with yes. Imao
A student measures the time it takes for two reactions to be completed.
Reaction A is completed in 12 seconds, and reaction B is completed in 21
seconds. What can you conclude about the rates of these reactions?
A. The rates of reactions A and B are equal.
B. The rate of reaction A is lower.
C. The rate of reaction B is lower.
Answer:
c
Explanation:
because the left side of reactant is take more time to make a product than the first
The rate of these reactions should be considered as the option b. The rate of reaction A is lower.
Conclusion of the rate of reactions:Since Reaction A is completed in 12 seconds, and reaction B is completed in 21 seconds.
So based on this, we can say that the rate of reaction A should be lower as it contain 12 seconds as compared to reaction b.
hence, the option b is correct.
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The energy levels of an atom are occupied by
A.electrons
B.protons
C.neutrons
D.ions
Answer:
A: electrons
Explanation:
Arrange the following elements (E, K, P, B) according to increasing atomic radius
Answer:
B
P
K
Explanation:
K: 203pm
B: 84pm
P: 107pm
There isn't an E on the Periodic Table?!
Question 3
When an electron absorbs energy and jumps it is:
a negative ion
in the ground state
a positive ion
in the excited state
Help please
Answer:
in the excited state
Explanation:
Because in excited state an atom has more energy
The movement of an object toward earth Soley because of gravity is called
Answer:constant acceleration. A steady change in velocity.
Explanation:
162.4 NH3 =____mol NH3
Answer:
162.4
Explanation:
Because yea thats the answer no need to tell you why ok bye
Symptoms of a mental disorder are ways of
unusual.
feeling, or acting that are
A. thinking
B. sleeping
C. working
D. imaging
Answer: thinking
Explanation:
A mental disorder are ways of unusual feeling, or acting that are thinking. Therefore, option A is correct.
What is mental disorder ?A clinically significant impairment in a person's intellect, emotional control, or behavior is what is known as a mental disorder. It is typically linked to distress or functional impairment in key areas.
Mental illness has many causes, not just one. Your genes and family history are only two examples of the many variables that can increase your risk for mental illness. Your life experiences, particularly if they occurred as a youngster, such as stress or a history of abuse.
Depression is the most prevalent mental condition, affecting an estimated 300 million individuals, and often affects women more frequently than males.
Thus, option A is correct.
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A sample of metal is heated until it melts and begins to glow red. When it cools, it appears the same color as it did before it was heated. This is evidence that a chemical reaction occurred. is it true or false
Answer:
Explanation:
trueeeeeeeeeeeeeeeeeeeeeeeeeee
5. (03.01 LC)
Which of the following is matter in its liquid form?(2 points)
Animals
Plants
Rain
Sunlight
Answer:
rain
Explanation:
rain drops are water and water us a liquid
Atoms acquire the stability of a noble gas by losing electrons
Answer:Atoms acquire the stable electron structure of a noble gas by losing electrons. An atom of an element in Group 1A has seven valence electrons. Among Group 1A and 2A elements, the group number is equal to the number of valence electrons in an atom of that element.
Explanation: Hope this help have an wonderful day and stay safe! :D
HELP PLEASE!!!!!
An experiment calls for each student to use 3.50 g of sodium hydroxide.
There is only 78.2 g of sodium hydroxide remaining. How many students An experiment calls for each student to use 3.50 g of sodium hydroxide.
There is only 78.2 g of sodium hydroxide remaining. How many students
can complete the experiment?
Select one:
a. 22 students
b. 0 students
c. 78 students
d. 273 students
Answer:
22 students
Explanation:
i just answered it for a quiz and its correct
Which of the following statements is NOT true about Olympus Mons?
It is 3 times as high as Mount Everest.
O Its base is about the same size as Arizona.
It is the largest mountain in the solar system.
It have never erupted.
Answer:
The largest of the volcanoes in the Tharsis Montes region, as well as all known volcanoes in the solar system, is Olympus Mons. Olympus Mons is a shield volcano 624 km (374 mi) in diameter (approximately the same size as the state of Arizona), 25 km (16 mi) high, and is rimmed by a 6 km (4 mi) high scarp.
Explanation:
When you dissolve an antacid tablet in water and it produces bubbles, what kind of change is this?
A. a physical change
B. a chemical change
C. a solution change
Answer: B. a chemical change
Explanation:
write the formula of cryolite .
Answer:
[tex]Na_{3} AlF_{6}[/tex]
Name the Compound CS4
Monocarbon tetrasulfide
Monocarbon sulfide
Carbon tetrasulfide
Carbon sulfide
Answer:
Monocarbon tetrasulfide
Explanation:
Name of compound is mono carbon tetrasulfide.
What is a compound?
Compound is defined as a chemical substance made up of identical molecules containing atoms from more than one type of chemical element.
Molecule consisting atoms of only one element is not called compound.It is transformed into new substances during chemical reactions. There are four major types of compounds depending on chemical bonding present in them.They are:
1)Molecular compounds where in atoms are joined by covalent bonds.
2) ionic compounds where atoms are joined by ionic bond.
3)Inter-metallic compounds where atoms are held by metallic bonds
4) co-ordination complexes where atoms are held by co-ordinate bonds.
They have a unique chemical structure held together by chemical bonds Compounds have different properties as those of elements because when a compound is formed the properties of the substance are totally altered.
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Define compound in your own words
Answer:
I think the compound is a chemical bound the compound o cant say I trying
Explanation:
oh the compound is a chemical substance like atoms like H2O and other atoms they have many compounds I think this should be ans
if its ans is too long you want then tell me in comment
Methane gas combusts according to the following
chemical equation:
CH4 (8) + 202(g) → CO2(g) + 2H2O(l)
29.2 L of methane gas is combusted with 63.3 L of
oxygen gas at STP. What volume of carbon dioxide
is produced in the reaction?
___L CO2
Your answer should be rounded to three significant figures. Do
not include units in your answer.
The volume of Carbon dioxide : 29.12 L
Further explanationGiven
ReactionCH4 (g) + 202(g) → CO2(g) + 2H2O(g)
Oxygen volume = 63.3 L
Methane volume = 29.2 L
RequiredThe volume of Carbon dioxide
Solution
1 mol gas at STP = 22.4 L
mol methane :
[tex]\tt \dfrac{29.2}{22.4}=1.3[/tex]
mol oxygen :
[tex]\tt \dfrac{63.3}{22.4}=2.83[/tex]
limiting reactant : CH₄(smaller ratio:mol/reaction coefficient)
So mol CO₂ based on CH₄
From equation, CO₂ : CH₄ = 1 : 1, so mol CO₂ = 1.3
The volume =
[tex]\tt 1.3\times 22.4=29.12~L[/tex]
The volume of carbon dioxide is produced in the reaction is 29.12 L
The calculation is as follows:We know that
1 mol gas at STP = 22.4 L
So,
The mol methane is
[tex]= 29.2 \div 22.4\\\\= 1.3[/tex]
Now
The mol oxygen is
[tex]= 63.3 \div 22.4\\\\= 2.83[/tex]
Now the volume is
[tex]= 22.4 \times 1.3[/tex]
= 29.12 L
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Please helppp
Which of the following trends is decreasing as you move from left to right across this portion of the Periodic Table?
Atomic number
Metallic character (becoming less metal like)
Number of atomic orbitals
Number of valence electrons
Answer:
Metallic character (becoming less metal like)
Explanation:
I took the test
The "dots" in a electron dot structure (Lewis Dot) represent the following:
Valence electrons, the electrons that are in a noble gas.
Valence electrons, all the electrons that surround the nucleus of an atom
The group numbers 1A thru 8A
Valence electrons, the outer most electrons used in bonding
Answer:
the statement is true.....
why is an atom electrically neutral
What is an atom? Is it stable? Give reasons to support your answer.
balance these equations
Answer:
2 Pb(NO3)2 = 2 PbO + 4 NO2 + O2
2 KNO3 = 2 KNO2 + O2
4 Al + 3 O2 = 2 Al2O3
60KI + 3H20 + 40O3 → 60KOH + 30I2 + 30O2
2 FeCl3 + SO2 + 2 H2O = 2 FeCl2 + 2 HCl + H2SO4
Check if its right
Explanation:
2Pb(NO3)2=2PbO+4NO2+ O2
4KNO3=4KNO2+2O2
8AL+6O2=4AL2O3...
I tried ....
If an atom has a mass number of 52 and has 28 neutrons, what is the atomic number?
Answer:
24
Explanation:
52-28=24
Two knots is equal to:
Answer:
2.30156
Explanation:
Answer:
2.30156
Explanation:
becuase one knot is equivalent to 1.15078, two knots is equivalent to 2.30156
How many atoms of Hydrogen are in the 3 molecules of glucose?
3C6H12O6?
Answer:
36 hydrogen atoms in 3 molecules of glucose
Explanation:
The formula for one molecule of glucose is C₆H₁₂O₆
There are 12 hydrogen atoms in one molecule so in three molecules there would be 36
Geologists obtain indirect evidence about Earth’s interior by
a.
measuring pressure differences at Earth’s surface.
b.
estimating temperature inside earth.
c.
directly looking under the many layers.
d.
recording and studying seismic waves.
Answer:
I'm sure it's D.
Explanation:
They obtain evidences by recording and studying seismic waves.
Question 8 of 10 Which wave property is related to the pitch of a sound? A. Crest height B. Frequency O C. Amplitude D. Rest position
Answer:
frequency
Explanation:
i took the test
The number of protons and neutrons combined in an atom of a particular element