Answer:
H =2; I = 2; J = 2
Explanation:
Carbon is element 6 in the Periodic Table.
Start at element 1 (H) and count from left to right until you reach element 6 (C).
You get the electron configuration
C: 1s² 2s²2p².
Thus,
H =2; I = 2; J = 2
Which of the following lists the relative strengths of the fundamental forces from strongest to weakest?
A. Strong nuclear force weak nuclear force, gravitational force, electrostatic force
B. Gravitational force, strong nuclear force electrostatic force, weak nuclear force
C. Electrostatic force, gravitational force, weak nuclear force, strong nuclear force
D. Strong nuclear force, electrostatic force, weak nuclear force, gravitational force
Answer:
D. Strong nuclear force, electrostatic force, weak nuclear force, gravitational force
There are four fundamental or universal forces in nature. Without these forces, all matter in the world will fall apart. The relative strength of fundamental forces is Strong nuclear force, electrostatic force, weak nuclear force, gravitational force. Thus the correct option is D.
What are fundamental forces?The fundamental forces are also called the fundamental interactions. All the known forces of the nature can be collectively called the fundamental forces. The four important fundamental forces are gravitational, electrostatic, strong and weak nuclear forces.
The gravitational force is the weakest fundamental force. It is an attractive force which arises from the gravitational interaction. The attractive as well as the repulsive force caused by the electrically charged particles is defined as the electrostatic force.
The nuclear force is the strongest attractive force. The strong nuclear forces hold the nuclei of atoms together. The weak nuclear forces are responsible for the radioactive decay.
Thus the correct option is D.
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Write the nuclear equation for the beta decay
of calcium-45.
Answer:
on https://www.ck12.org/book/peoples-physics-concepts/section/20.1/
Explanation:
it shows for calcium 45 and maybe a possible equation on 3/4th's scroll down?
If the pressure of a 2.00 L sample of gas is 50.0 kPa, what pressure does the gas exert if its volume is decreased to 20.0 mL?
Which equation should you use?
__________________________________________________________
Which equation should you use?
B. P₁V₁=P₂V₂
What is the new pressure?
✔ 5000 kPa
__________________________________________________________
Explanation:The problem gives initial volume (2.00 L), final volume (20.0 mL), and initial pressure (50.0 kPa). Then it asks to find the final pressure. Answer B has all these variables, with P₁=initial pressure, P₂=final pressure, V₁=initial volume, and V₂=final volume. Plug the given values into the equation and then solve for the unknown value, which is P₂, final pressure.
When plugging in the values, use consistent units. 2L=2000 mL, I chose to make the consistent unit in mL. You'll get the same answer if you choose to use L as the consistent unit.
[tex]2000*50=20*P2[/tex]
[tex]100000=20*P2[/tex]
Divide both sides by 20
[tex]100000/20=(20*P2)/20[/tex]
[tex]5000=P2[/tex]
Here's a photo of Edge just incase.
The photograph below shows the East African Rift Valley in Africa. Which tectonic movement
of Earth’s crust is most likely responsible for this feature?
Answer:
divergence of continental crust
Explanation:
5. The bond in a molecule of Cl2 could be described as
A. covalent
O B. ionic
C. both A and B
O D. neither A nor B
the bond in a molecule of Cl2 is a covalent bond
Fill in the coefficients that will balance the following reaction:
Compound A reacts with alcoholic KOH to yield compound B which on ozonolyzises followed by the reaction with Zn/H2O gives methanal and propanal Compound A is
Answer:
1-chlorobutane
Explanation:
Given that :
-- The compound A is made to react with alcoholic KOH and produce compound B.
-- The compound B on Ozonolysis produces methanol as well as propanol
The compound A should be a haloalkanes as treatment of haloalkanes with the alcoholic KOH, it will give alkene.
[tex]$CH_3CH_2CH_2CH_2Cl+KOH( \text{alcohol}) \rightarrow CH_3CH_2CH=CH_2+KCl+H_2O$[/tex]
So, the compound B should be Butene
Now the ozonolysis of the compound B or butene will give methanol and propanal as shown :
[tex]$CH_3CH_2CH=CH_2 \rightarrow CH_2O+CH_3CH_2CHO$[/tex]
Therefore, the compound A is 1-chlorobutane.
Answer This Picture..
Answer:
red and blue
Explanation:
Which properties make a metal a good material to use for electrical wires?
Answer: it has 2 characteristics and they are conductivity and ductility
Explanation:
The conductivity makes them great conductors of electricity
Answer:
It's B guaranteed;)
Conductivity and ductility
What is the state of HNO3 in the reaction? HNO3 (g) --> NO2 (g) + 2 H2O (1) 1 point
+ O2 (g)
gas
liquid
aqueous
Answer:
gas
Explanation:
the answer is right in the question (g) stands for gas.
Describe two situations in which you observed or performed an energy transformation. For each situation, name the starting form of energy and an ending form of energy.
Answer:
The Sun transforms nuclear energy into heat and light energy.
Our bodies converting chemical energy in our food into mechanical energy for us to be able to move.
An electric fan transforming electrical energy into kinetic energy.
A gas fills up a container that has 2.5L has a pressure of 3.5 atm. If the gas gets transferred to a container that holds 4L, what would the new pressure be?
calculate the oxidation numbers of the elements in this equation
2 Al2O3 → 4 Al + 3 O2
Explanation:
Answer
Open in answr app
The rule used here is that the algebraic sum of the oxidation numbers of all the atoms a molecule is zero.
Al2O32× ( oxidation number of Al)+3× ( Oxidation number of O ) = 0
2× ( Oxidation number of Al) +3(−2)=0
2× ( oxidation number of Al) +6
∴ Oxidation number of Al =+3
I need to know the coefficient order
Explanation:
in mathematics use Pascal triangle
when potassium chloride is dissolved in water *
a)heat is given off
b)heat is taken in
c)temperature stays same
Answer:
Option B . heat is taken in
Answer:
B
Explanation:
we need to eat,drink,and sleep to be healthy
HELP ASAAAAP 40 MINS LEFT AAA!
Geometric isomers have profound effects on the physical properties of compounds. Naturally occurring fatty acids generally adopt a cis geometry. What's one physical property affected by this geometry?
A)
Color
B)
Taste
C)
Smell
D)
Melting point
What charge would Balloon #2 have? How did you determine this?
Answer:I belive it would be attracted seeing as how there are more magmatic charges on that side of no 2 and how there are more positive charges on the middle side of ballon no1.
Explanation:
Suppose I have enough ingredients to make 25 cookies, but when I go to bake them, I only get 5. What percent yield did I obtain?
Answer:
Explanation:
What is the "theoretical yield" of cookies from each of the "reactants?"
Theor. yield from eggs
=
12
eggs
×
24 cookies
1
egg
=
288 cookies
Theor. yield from vanilla
=
24
tsp vanilla
×
24 cookies
1
tsp vanilla
=
576 cookies
Theor. yield from salt
=
82
tsp salt
×
24 cookies
0.5
tsp salt
=
3936 cookies
Theor. yield from baking soda
=
84
tsp baking soda
×
24 cookies
0.5
tsp baking soda
=
4032 cookies
Theor. yield from chocolate chips
=
3
cups chocolate chips
×
24 cookies
1.333
cups chocolate chips
=
54 cookies
Theor. yield from sugar
=
11
cups sugar
×
24 cookies
0.5
cup sugar
=
528 cookies
Theor. yield from brown sugar
=
4
cups brown sugar
×
24 cookies
0.5
cup brown sugar
=
192 cookies
Finally, "we leave it as an exercise for the student" to calculate that
Theor. yield from margarine = 72 cookies
b. Identify the limiting reactant
The limiting reactant is the amount of chocolate chips because they can produce the smallest amount of cookies.
c. Determine the theoretical yield
The theoretical yield is 54 cookies, because that is all you can get from the chocolate chips provided.
The percent yield obtained on baking the cookies is 20 % and the theoretical yield is 25 cookies.
What is percent yield?Percent yield is defined as the ratio of actual yield to the theoretical yield multiplied by 100. If the actual and theoretical yield are same then the percent yield is 100%.If actual yield is less than the theoretical yield then the percent yield is less than 100%.Reason of this condition arising is the incompletion of reaction or loss of sample during recovery process.
In cases where percent yield is over 100% it indicates that more sample is recovered than the predicted amount.This condition arises when there are other simultaneous reactions taking place leading to the formation of product. It can also arise if there is incomplete removal of impurities from the sample .
As cookies obtained is 5 it is observed yield while 25 is theoretical yield so the percent yield, 5/25×100=20%.
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the rows from left to right in the periodic table is called what
Answer:
The periodic table has rows that go left to right and columns that go up and down, just like any other grid. The rows are referred to as PERIODS, while the columns are referred to as GROUPS.
Explanation:
Can someone help me
Answer:the second largest one
Explanation:
both weels are pushing at it
Considering the temperature vs. time graph below, how does the temperature at the beginning of a change of state
compare with the temperature at the end of the change?
Answer:
The temperature on the graph is higher at point 5 than at point 1. The correct answer is the last answer choice that you showed.
Explanation:
The temperature at point 1 is -10 degrees Celsius, while the temperature at point 5 is 120 degrees Celsius. This is a 1300% increase.
See the calculation here: https://www.calculatorsoup.com/calculators/algebra/percent-change-calculator.php?v_1=-10&v_2=120&action=solve
I hope this helps.
Increasing the temperature of an endothermic reaction results in ____
· more reactants and products.
· no change in the quantities of reactants and products.
· more reactants and fewer products.
· fewer reactants and products.
· more products and fewer reactants.
Answer:
more reactents and products
what is the molecular weight of a gas which diffuses 1/50 as fast as hydrogen
Most terrestrial plants are members of this Division:
Bryophyta
Angiosperms
Pinophyta
Pteridophyta
Answer:
most flowering plants are classified as angiosperms
Answer:
I think the answer is Bryophyta
Explanation:
seedless,non vascular plants that are the closest extant relative of early terrestrial plants
Which of the following represents an element ? H2O H2 NaCl CaCO3
Answer:
H₂
Explanation:
H₂ is hydrogen in its elemental form.
H₂O, NaCl, and CaCO₃ are all examples of elements added together to create compounds.
1. BaBr2(aq) + H2SO4(aq) →?
please balance the equation and predict the products
Answer:
BaBr2 (aq) + H2SO4 (aq) → BaSO4 (s) + 2 HBr (aq)
Explanation:
This is a precipitation reaction: BaSO4 is the formed precipitate.
how many moles of H2 are required to make 10 moles of water?
Explanation:
10 moles h20 is required
10 moles of H₂ are required to make 10 moles of H₂O.
What is Stoichiometry ?Stoichiometry is an important concept which helps us use the balanced chemical equation to measures the amount of reactants and products.
What is Balanced Chemical equation ?A balanced chemical equation is chemical equation that has equal number of atoms on both sides of arrow that is reactant and product.
First we have to write the Balanced chemical equation
2H₂ + O₂ → 2H₂O
To produce 2 moles of water, 2 moles of hydrogen are required to produce 10 moles of water.
So,
[tex]\frac{2\ \text{moles of}\ H_2}{2\ \text{moles of}\ H_2O}[/tex] × 10 moles of H₂O
= 10 moles of hydrogen are required.
Thus, from above conclusion we can say that 10 moles of H₂ are required to make 10 moles of H₂O.
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How many moles are equivalent to 365 g of aluminum chloride? Using the dimensions analysis. Show work
Answer:
≈ 2.74 mol [tex]AlCl_{3}[/tex]
(I rounded to 3 sig figs because the starting amount has 3 sig figs.)
Explanation:
[tex]\frac{365g AlCl_{3}}{1}*\frac{1 mol AlCl_{3}}{133.34g AlCl_{3}} =[/tex] 2.73736313184 mol [tex]AlCl_{3}[/tex] ≈ 2.74 mol [tex]AlCl_{3}[/tex]
Hope this helps!
lime water turns milky when carbon dioxide gas passed through it and on further exposure to carbon dioxide the milkiness disappear, why
Resultant carbon dioxide passed through limewater in the right tube, producing a milky solution due to precipitation of the insoluble suspension of calcium carbonate: ... The milkiness disappears since calcium bicarbonate is water-soluble.
write a chemical equation for action of HBr on ethanol
answer:
hope this one helps have a great day !
