which of the following lists show the elements in order, from those having the least protons to those having the most protons in the atoms?
A. K, Mg, N, O
B. C, Al, P, Cl
C. Li, Be, H, He
D. Na, Ne, He, H
Answers
The elements that have least protons to those having the most protons in the atoms are:
B. C, Al, P, Cl
Protons in an atom:There is an equal number of protons and electrons in an atom. So when moving across a period in a periodic table the number of electrons increases which also shows the increases in a number of protons. So as the atomic number increases, the number of protons and electrons also increases.
Thus, the order of elements having least to greatest protons are:
C, Al, P, Cl
C has 6 atomic number, Aluminium has 13 atomic number , Phosphorus has 14 atomic number and atomic number of chlorine is 17.
Thus, option B is correct.
Find more information about Atomic number here:
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Related Questions
gasoline is separated from crude oil by heating it until it reaches it's boiling point. which separation method is used?
Answers
Answer:
Fractional distillation
Explanation:
The separation of gasoline from crude oil by heating until it reaches its boiling point is a separation technique called fractional distillation.
It is the separation of a mixture, such as crude oil into their respective fractions. This is achieved due to the differences in boiling point between the constituent fractions in the mixture. As the boiling point of a fraction is reached, it distills out from the column.Describe the role of the ocean in the water cycle?
Answers
Answer:
Don't get me wrong the seas are, by distant, the biggest store of water on soil, over 96% of all of Earth's water exists within the seas. Not as it were do the seas give dissipated water to the water cycle, they moreover permit water to move all around the globe as sea streams. I mean, that's all i know man, give me a break.
Explanation:
What would make the most sense that the ocean would have a role of? Well it would be evaporation in the water cycle because the ocean is 97.5% of all water and is the main source for condensation, precipitation and collection. But it’s main role is collection of water to be evaporated into the cycle.
Hope this helps :)
Which type of bond involves valence electrons constantly moving between atoms, like a sea of electrons?
a. Ionic
b. Covalent
c. Molecular
d. Metallic
Answers
OK HURRY AND PLEASE ANSWER COZ THIS TEST IS TIMED BROS
What is the sum of the coefficients in the balanced chemical equation for the combustion of acetone, C3H6O(l), in air?
Express answer as an integer
Answers
Answer:
C3H6O + 4O2 → 3CO2 + 3H2O or 11
Explanation:
Answer:
11
Explanation:
A gas occupies 3.5L at 2.5 kPa pressure. What is the volume at 100 mmHg at the same temperature? Be sure to
show the setup and the final answer and unit.
Show Your Work
Answers
The volume at 100 mmHg : 0.656 L
Further explanationBoyle's Law
At a constant temperature, the gas volume is inversely proportional to the pressure applied
[tex]\rm p_1V_1=p_2.V_2\\\\\dfrac{p_1}{p_2}=\dfrac{V_2}{V_1}[/tex]
V₁=3.5 L
P₁=2.5 kPa=18,7515 mmHg
P₂=100 mmHg
[tex]\tt \dfrac{18.7515}{100}=\dfrac{V_2}{3.5}\\\\V_2=\dfrac{18.7515\times 3.5}{100}=0.656~L[/tex]
What do you think happens to Difluoroethane at –24°C? Provide evidence to support your claim.
Answers
Answer:
The following subsections explain the explanation according to the particular circumstance.
Explanation:
The boiling point seems to be the temperature beyond which the working fluid as well as the boiling phase would be at a predetermined pressure or voltage at equilibrium among one another and. The vapor or boiling temperature of 1,1 difluoroethane seems to be -25oC at 1 atm, although as a gas it can remain at a higher temperature around -24oC.I need help! Thanks!
Answers
Answer:
C. As speed increases, kinetic energy increase exponentially
Explanation:
As you can see on the graph, the further right we move on the x-axis, the higher the values on the y-axis. This means that as one value increases, the other value also increases. The only answer choice that says this is C.
Hope this helps :)
is C because i did it on the quiz
true or false: ur hearts a muscle
Answers
Answer: True
Explanation:
Anatoms of an element with atomic number 48 and mass number 120
contains
Answers
Cadmium 120 has 48 protons and 72 neutrons which makes its mass number 120
Hope that helps :)
2 The substance has a mass of 0.50 kg.
34 000 J of energy is transferred to the substance to completely melt it.
The temperature of the substance does not change during this time.
Calculate the specific latent heat of fusion of the substance.
Use an equation from the Equations List.
Answers
Answer:
68000J/kg
Explanation:
Given parameters:
Mass of the substance = 0.5kg
Quantity of heat transferred to the body = 34000J
Unknown:
Specific latent heat of fusion = ?
Solution:
The specific latent heat is usually involve in phase changes;
H = mL
H is the quantity of heat supplied
m is the mass
L is the specific latent heat
Insert the parameters and solve;
34000 = 0.5 x L
L = [tex]\frac{34000}{0.5}[/tex] = 68000J/kg
What do acids react with in limestone to form giant cave systems?
Answers
Answer:
Giant cave systems have formed through the reaction of acids with carbonates the that make up limestone. Caves are formed as a result of dissolution of limestone, through a type of chemical weathering known as carbonation.
Explanation:
.
Answer:
It's C: Carbonates
Explanation:
Its on ed
What types of atoms typically form covalent bonds?
A. Metals with nonmetals, because their difference in electronegativity is above 1.7.
B.Metals with nonmetals, because their difference in electronegativity is below 1.7.
C.Nonmetals with nonmetals, because their difference in electronegativity is above 1.7.
D.Nonmetals with nonmetals, because their difference in electronegativity is below 1.7.
Answers
Explanation:
Covalent bonds form between non-metals because their electronegativity difference is below 1.7. An electronegativity difference of this magnitude shows that the combining atoms would equally have a similar affinity for valence electrons when interatomic bonds are forming.
A covalent bond involves the sharing of valence electrons in their outer energy shells in order to mimic the noble gases.
Electronegativity is a measure of an atom to attract valence electrons in chemical bonds.
Non-metals generally have very high electronegativity.
Since the two atoms have high electronegativity, it becomes difficult for an atom to donate electrons from bonding as seen in ionic bonding.
In covalent bonding, the two atoms donates the electrons to be shared.
Example is HCl.
If nitrogen and hydrogen combine in a combustion reaction, what would the product of the reaction be?
CH4 + 2O2 → ____2 + 2H2O
Answers
Co2
Explanation:
CH4 (g) + 2 O2 (g) → CO2 (g) + 2 H2O (l)
Answer:
C - CO
Explanation:
Correct on EDGE
i need help with my assignment asap
Answers
2) liver cirrhosis
3) valve
8)How many grams are in 0.02 moles of beryllium iodide, BeI2?
9)How many moles are in 68 grams of copper (II) hydroxide, Cu(OH)2?
10)How many grams are in 3.3 moles of potassium sulfide, K2S?
11) How many grams are in 2.3 x 10-4 moles of calcium phosphate, Ca3(PO3)2?
Answers
Answer:
0.03:---$7--$-$7$--$-$-$$-$+-$$7-$$-$7-$8$+$-$
When writing a formula for a compound having a transition metal in it, _____.
it is sometimes necessary to use the Roman numeral as the assigned charge of the metal
it is sometimes necessary to include a Roman numeral after the symbol of the metal
it is always necessary to include a Roman numeral after the symbol of the metal
it is always necessary to use the Roman numeral as the assigned charge of the metal
Answers
Answer:
The correct option is;
It is always necessary to include a Roman numeral after the symbol of the metal
Explanation:
The transition metals can form ionic compounds with other elements by giving different number of electrons such that the transition metals can combine to form compounds in which they have different oxidation states
Therefore, in a compound formed by a transition metal, the value of the transition metal's valency or oxidation state in the compound is indicated by the inclusion of an equivalent Roman numeral after the transition metal in the name of the chemical formula of the compound
Scientists digging in a cave found an unknown substance. The scientists
found that the substance’s molecules were moving around each other. The scientists
increased the speed of the substance’s molecules and caused a phase change. How
did the scientists do this, and how did this affect the substance?
Answers
Answer:
By adding heat energy
It became a gas
Explanation:
The molecules moving about another is a clear indicator that the substance is a liquid.
In a liquid, the molecules stick together and move about one another.
When the scientist increase the speed of the of substance, the kinetic energy increases. if this increase causes a phase change, then the substance becomes a gas. So, by adding heat energy a substance becomes gaseous if it is a liquid already.my song, you hate me
yeah, lately i was feeling that you hate me its ok though cause i know
yeah, am i in a dream am i awake i cant tell because i feel im about to break
i know im a mistake all i ever ask for is for gods sake i dont apologize because what difference what it make i had all those chances that i did not take
its all my fault i got to behave im trapped in a cage i got to lose all the bad stuff and get in shape all i have to do now is give and take all those things that i said about drowning
in a lake its just hard to replace when you have so much to say to her face i still remember that when she taught me how to tie my shoe lace
yeah, i just want to be the better person the better version im not even learning and that is for certain im in flames im burning and inside im hurting but now i hope i will learn my lesson
Answers
Answer:
cool
Explanation:
Answer: I'm sensing depressed vibes... you okay?
Explanation: Your song's nice tho c:
carbon and tin are both in the fourth column of the table which would you expect to have the greater electronegativity
Answers
Answer: Carbon
Explanation:
electronegativity decreases when you go down a column
The study of chemical bonds is called chemistry.
The correct answer is carbon.
The more negative charge present on an atom shows the electronegativity.
The attraction of the nucleus to the proton is also referred to as electronegativity.
The smaller the radius more the electronegativity.
Hence, the correct answer is Carbon as it has fewer atoms and a smaller radius.
For more information, refer to the link:-
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check wether all the answers are correct or not. please?
Answers
Answer:
c
your answer is correct
Match the term with the definition.
Condensation
Evaporation
Sublimation
Freezing
A) A phase change from a gas to a liquid
B) A phase change from a solid to a gas
C) A phase change from a liquid to a gas
D) A phase change from a liquid to a solid
[Please Hellp!]
Answers
Evaporation goes with C.
Sublimation goes with B.
Freezing goes with D.
Astronomers observed that the orbit of Uranus was not uniform. Therefore, they hypothesized the existence of another planet. This is an example of scientific investigation being led by _____.
Inductive Reasoning
Deductive Reasoning
Answers
Answer:
This is an example of scientific investigation being led by inductive reasoning.
Explanation:
Inductive reasoning is the type of reasoning used to make broad generalizations from specific observations. We have certain pieces of data and make conclusions based on them. In the given example, astronomers have made a specific observation - that the orbit of Uranus isn't uniform. Based on that fact, they made a broader conclusion - that there is another planet. There are probably more things that could lead to the same conclusion.
The opposite is deductive reasoning, where a person starts off with a broad generalization and tries to make specific, logical conclusions based on it.
I will give brailiest to whoever needs it!
Answers
Answer:
pls pls pls pls pls give me brainliest i just need one more plssssssss
Explanation:
Brian is making a cake for his friend's birthday. He combines the ingredients for the cake and then pours the batter into two pans and bakes them for 45 minutes in the oven. While the pans are in the oven, he combines butter, sugar, and milk and mixes them together to make the icing. What type of changes created the cake and the icing?
A. Both the icing and the cake are formed by physical changes.
B. Both the icing and the cake are formed by chemical changes.
C. The icing is formed by a chemical change and the cake is formed by a physical change.
D. The cake is formed by a chemical change and the icing is formed by a physical change.
Answers
Answer:
it’s D.The cake is formed by a chemical change and the icing is formed by a physical change
Explanation:
It’s because when the cake was baking there was nothing physical about it so it was a chemical change the icing is formed by a physical change because all you did was mix three ingredients together
The type of changes that created the cake and the icing is;
Option D; The cake is formed by a chemical change and the icing is formed by a physical change.
This is about understanding type of changes in chemistry.
Physical change is defined as a change that affects the form of a compound or element but it doesn't affect its' chemical composition.Meanwhile, chemical change is defined as a change that affects the composition of a compound and a new substance is formed.Now, for brian's cake he has combined raw ingredients into two pans and bakes the cake. For the cake to be baked, it means the ingredients mixed have changed from liquid to solid and also a new substance has been formed. Thus, we can say that the cake was formed from chemical change.Meanwhile, the icing was formed by physical change because it did not undergo any chemical process and no new substance was formed as only butter, sugar and milk were mixed together.Read more at; https://brainly.com/question/19046658
is orange juice a element or a mixture
Answers
Orange juice is mixture.
Answer:
[tex]\boxed {\boxed {\sf Mixture}}[/tex]
Explanation:
An element is pure and all the atoms have the same atomic number. An element has a symbol and can be found on Periodic Table of Elements.
A mixture is created when two or more substances are combined physically.
Orange juice can't be found on the Periodic Table of Elements. Orange juice is made up of many different substances/ingredients, like water, sugar, and juice from the orange.
Therefore, orange juice is considered to be a mixture. More specifically, a homogenous mixture because it is uniform. (*applies to pulp-free orange juice). If it has pulp, it would be a heterogenous mixture.
A unit of substance that contains the Avogadro number of atoms or molecules is referred to as a ____________ of the substance.
Answers
Answer:
A unit of substance that contains the Avogadro number of atoms or molecules is referred to as a mole of the substance.
Explanation:
The mole (symbol: mol) is the unit of measurement for amount of substance in the International System of Units (SI). A mole of a substance or a mole of particles is defined as exactly 6.02214076×1023 particles, which may be atoms, molecules, ions, or electrons. In short, for particles, 1 mol = 6.02214076×1023.
check wether all the answers are correct or not. please?
Answers
Answer:
H2+NO3=HNO3
Explanation:
becuase HNO3
help me plsssss ))):
Answers
Answer:
crushing an ice cube
Explanation:
crushing an ice cube can be redone by freezing it again in its position
2.303 3-5.05x10-3
1 | - 1
T2298
Answers
Answer:
230,294.9 I think it's fine just try your past or ask teacher help
Igneous rocks are classified by mineral composition and ?
1. How fast it weathers .
2. Sizes of the rock .
3. Texture .
4. Density.
Answers
Answer:
3. Texture.
Explanation:
Igneous rocks texture refers to the size of minerals in the rock, which is assessed by how visible they are to the naked eye.