Answer:
true?
Explanation:
I NEED THIS NOW PLEASE 20 POINTS
Which pair of compounds are isomers?
A) C6H6 and C6H12
B) C2H4 and C2H6
C) CH3CH2OH and CH3COOH
D) CH3CH2OH and CH3OCH3
Answer:
D
Explanation:
those pairs having same number of atoms
Draw a ionic Lewis dot structure for Ba + F
(Will give Brainliest for the best answer)
What centripetal force is needed to keep a 2 kg sack of flour moving at a constant speed of 4 m/s in a circle having a radius of 4 meters?
Hello!
[tex]\large\boxed{F_{c} = 8N}[/tex]
Use the equation for Centripetal force to solve:
[tex]F_{c} = \frac{mv^{2}}{r}[/tex]
Plug in the given mass, velocity and radius to solve:
[tex]F_{c} = \frac{2*4^{2}}{4}\\\\F_{c} = \frac{32}{4}\\\\F_{c} = 8 N[/tex]
For which element is the ionic radius larger than the atomic radius?
1) Na
2) Mg
3) AI
4) CI
Answer:
2
Explanation:
Two or more atoms with dissimilar physical or chemical characteristics cannot unite to form an element. Therefore, chlorine is the element whose ionic radius is larger than the atomic radius. the correct option is option 4.
What is element?
Element is made up of atoms or atoms together to make element. Atoms of a given element are always the same, which means that all of the characteristics of all atoms with one kind of element are the same.
The size of anion is always larger than size of its neutral atom. the size of cation is always smaller than size of its neutral atom. Cl⁻ is larger in size than Cl. Chlorine is the element whose ionic radius is larger than the atomic radius.
Therefore, chlorine is the element whose ionic radius is larger than the atomic radius. the correct option is option 4.
To know more about element, here:
https://brainly.com/question/8460633
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Which of these is true about pure substances? They can only contain one type of molecule. They may contain one type of atom or one type of molecule. They can only contain one type of atom. They can contain different types of atoms and molecules.
Answer:
its totally d
Explanation:
What is the name of this ?
3-ethyl-4,5-dimethyl-octane
If the statement is true, select True. If it is false, select False.
If a molecule contains polar bonds, the molecule may or may not be polar overall.
True
False
How many grams are there in 35.1 moles of calcium (Ca)
Answer:
no idea
Explanation:
Calcium is an important nutrient found in milk. The source of calcium comes from the compound calcium phosphate. Which of the following is the correct chemical formula for calcium phosphate?
Group of answer choices
F. Ca3P2
G. CaPO4
H. Ca2(PO4)3
J. Ca3(PO4)2
Answer:
Ca3(PO4)2
trust me this is correct
A chemist is conducting an experiment to find an enzyme that speeds up a reaction between Chemical A and Chemical B. The
chemist places Chemical A and Chemical B together in a beaker and then times how long it takes for the reaction to occur Next,
the chemist places the same amount of the two chemicals in a second identical beaker. The chemist adds an enzyme and then
times how long the reaction takes to occur
Did the chemist use adequate experimental controls?
Answer:
The correct option is;
C. Yes, the first chemical reaction (without the enzyme) acted as a control
Explanation:
A scientific control is a parallel observation or an experiment that serves as a measure to better improve the experimental result reliability, by comparing the outcome of the control experiment or observation with the outcome of the other observations or measurements to which has been applied an experimental treatment.
Solid lead(11) carbonate reacts with a dilute solution of
nitric acid (HNO,) to give a solution of lead(II) nitrate,
carbon dioxide and water.
Answer:
PbCO₃ + 2HNO₃ –> Pb(NO₃)₂ + CO₂ + H₂O
Explanation:
From the question given above:
Solid lead (II) carbonate reacts with a dilute solution of nitric acid (HNO₃) to give a solution of lead (II) nitrate,
carbon dioxide and water.
The above can be represented in the equation form as follow:
PbCO₃ + HNO₃ –> Pb(NO₃)₂ + CO₂ + H₂O
Finally, we shall balance the equation as follow:
PbCO₃ + HNO₃ –> Pb(NO₃)₂ + CO₂ + H₂O
There are 2 atoms of H on the right side and 1 atom on the left side. It can be balance by putting 2 in front of HNO₃ as shown below:
PbCO₃ + 2HNO₃ –> Pb(NO₃)₂ + CO₂ + H₂O
Now, the equation is balanced.
As you have seen, ozone is formed in the upper atmosphere through the reaction:
O(g) + O2(g) → O3(g)
Data has shown that this is first order with respect to oxygen atoms and first order with respect to diatomic oxygen. Write the rate law equation for this reaction.
The rate law equation for Ozone reaction
r=k[O][O₂]
Further explanationGiven
Reaction of Ozone :.
O(g) + O2(g) → O3(g)
Required
the rate law equation
Solution
The rate law is a chemical equation that shows the relationship between reaction rate and the concentration / pressure of the reactants
For reaction
aA + bB ⇒ C + D
The rate law can be formulated:
[tex]\large{\boxed{\boxed{\bold{r~=~k.[A]^a[B]^b}}}[/tex]
where
r = reaction rate, M / s
k = constant, mol¹⁻⁽ᵃ⁺ᵇ⁾. L⁽ᵃ⁺ᵇ⁾⁻¹. S⁻¹
a = reaction order to A
b = reaction order to B
[A] = [B] = concentration of substances
So for Ozone reaction, the rate law (first orde for both O and O₂) :
[tex]\tt \boxed{\bold{r=k[O][O_2]}}[/tex]
How many molecules of hydrogen gas will be produced when 0.2moles of aluminium react completely according to the following equation
Answer:
8
Explanation:
Two different recording stations have found that they had the same value for ΔT after an earthquake. If this is all the information they have so far, what can they conclude?
Answer:They can conclude that the epicenter is the same distance from both recording stations. Hope this helped.
Explanation:
identify the following reaction as oxidation and reduction F2(g)+2e-/2F-(aq)
Answer:
Reduction
Explanation:
The oxidation reduction reactions are called redox reaction. These reactions are take place by gaining or losing the electrons and oxidation state of elements are changed.
Oxidation:
Oxidation involve the removal of electrons and oxidation state of atom of an element is increased.
Reduction:
Reduction involve the gain of electron and oxidation number is decreased.
In given reaction fluorine gas gain two electron and form fluoride ions.
F₂(g) + 2e⁻ → 2F⁻(aq)
The given reaction is reduction because oxidation state is decreased from zero to -1.
Based on the table above, which substance will heat something faster? Explain your answer using details from the table.
Answer:
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Question 6
Which of the following atoms has the highest first lonization energy?
ON
OU
Rb
Answer:
HELIUM IS HE ANSWER
Explanation:
GOOD LUCK
i’m extremely stuck on this, please help
Answer:
ice: 2,100 J/(kg·K)
water: 4,200 J/(kg·K)
water vapor: 2,000 J/(kg·K)
basalt: 840 J/(kg·K)
granite: 790 J/(kg·K)
aluminum: 890 J/(kg·K)
iron: 450 J/(kg·K)
copper: 380 J/(kg·K)
lead: 130 J/(kg·K)
Explanation:
Specific heat is the amount of thermal energy you need to supply to a sample weighing 1 kg to increase its temperature by 1 K.
A beam of light exhibits diffraction when it passes through a small opening.
Which model of the nature of light does this example support?
A. The interference model
B. The wave model
C. The diffraction model
D. The particle model
Answer:
The wave model
Explanation:
Answer:
The wave model
Explanation:
In an era of bad harvests, famine, and rioting, the French government took steps to improve the worsening financial crisis. What did the government do? The government raised taxes. The government called for genuine political reform. The government forced all estates to pay the same taxes. The government reduced the Third Estate’s tax burden.
Answer:
The government raised taxes
Explanation:
France had monarchy as its form of government. After the King of France had borrowed heavily to retain his extravagant lifestyle as well as the fact that the Kingdom of France was largely indebted, the king had no other option but to increase taxes paid by commoners in France.
This happened in an era of bad harvests and famine. The commoners depended mostly on bread to survive. This made the cost of bread to alarmingly increase and most people were hungry and starving.
These happenings led to the French revolution.
Answer:
a
Explanation:
Given the two half-cell reactions for copper and iron below
2
2
standard
electrode potential (V)
2 -0.41
Cu Cu 2 +0.34
Fe Fe e
e
+ −
+ −
→ +
→ +
Would you use a water pipe that consists of the two metals? Justify your answer!
Answer:
No, i will not use a water pipe consisting of the two metals
Explanation:
Looking at the reduction potential of the both metals, it is clear that an electrochemical cell is set up with iron as the anode and copper as the cathode.
This will make the iron to quickly corrode and eventually destroy the water pipe. It is better to have a set up in which another metal that is higher than iron in the electrochemical series is combined with it.
Which ingredients are needed to transform NADP+ to NADPH?
an electron and two hydrogen ions
two electrons and two hydrogen ions
two electrons and a hydrogen ion
an electron and a hydrogen ion
Answer:
The light reactions use solar power to reduce NADP+ to NADPH by adding a pair of electrons along with a hydrogen nucleus, or H The light reactions also generate ATP by powering the addition of a phosphate group to ADP, a process called photophosphorylation.
Explanation:
Answer shortly is two electrons and a hydrogen ion
10. Elements known for their limited chemical reactivity are
A) alkali metals
B) alkaline earth metals
C) halogens
D) noble gases
E) transition metals
Answer this plsss it’s due in 4 minutes thanks have a great day!! :)))
Answer:
I THINK ITS B ( IM SO SORRY IM WRONG- )
Explanation:
Calculate the pH of a solution on mixing 0.1 M (50 mL) Ch3cooh and 0.1M(50 mL) Naoh
Ka= 0.00005
Answer:
here
Explanation:
Ka=Cx^2/1-x
Ka =1.8 x 10^-5
C = 0.1
If we consider x is negligible ie., x~0
Then x=(Ka/c)^0.5
={1.8 x 10^-5/0.1)^0.5 =0.01342
So concetration of H+ ion =Cx
=0.1 x 0.01342 =0.001342
pH=- log(0.001342) =2.87
However it is only an approximate method. Without using approximation, if we solve equation
Ka =Cx^2/1-x , for value of 'x', where C=0.1 then
We get x = 0.01273
So concetration of H+ ion = Cx
=0.1 x 0.01273 =0.001273
pH = - log (0.001273)
= 2.89.
Which of the following could form an ionic bond with an anion
Answer:
A. (Hg2^2+)
Explanation:
Just took the review on Edge! :D
i need help with question 16
plz help i’m timed!!!!!
Answer:
a
Explanation:
a
Upon balancing the equation what is the smallest possible integers that goes in front O₂? HBr + O₂ ➞ H₂O + Br₂ *
4 points
1
2
3
4
Answer:
1
Explanation:
4 HBr + O2 → 2H 20 + 2Br 2
...............
How many grams of Mg(ClO3)2 are needed to make 1,500 mL of a 2.5 N solution ?
Answer:
33
Explanation:
solid aluminum oxide and hydrogen gas are heated, molten aluminum and water vapor form?
Answer:
No
Explanation:
The answer would be no.
Solid aluminium oxide cannot react with hydrogen gas to produce molten aluminium and water due to the fact that, on one hand, hydrogen as an element is not a strong enough reducing agent that can remove oxygen from the aluminium oxide. On the other hand, aluminium is more reactive than hydrogen and hence, cannot be displaced by hydrogen in solution.
