Chemistry High School
Answers
Answer 1
Answer:
All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays. Radiation is one way to transfer heat.
Explanation:
I hope this helps
Related Questions
Please help, I need to get an A for this to pass
Answers
Hey I think it’s d if not I’m so sorry
Answer:
Probably C but then again it may be D
I'm not for sure
Explanation:
(Math) I NEED THIS ANSWER PLZ
Answers
Answer:
Q
Explanation:
√10=3.16
Describe the procedure for diluting the .10 M solution to a concentration of .020 M using distilled water, a 100mL volumetric flask, and a pipet or burst
Answers
Procedure :
Take 20 ml of 0.1 M solution and add distilled water until reaches 100 ml
Further explanation
Given
0.1 M and 0.02 M solution
100 ml volumetric flask
Required
Diluting procedure
Solution
To find the initial volume that needs to be taken from the 0.1 M solution to be diluted, we can use the dilution formula
M₁V₁ = M₂V₂
0.1 M . V₁ = 0.02 M x 100 ml
V₁ = 20 ml
So we take 20 ml of 0.1 M solution with a pipette, put it into a volumetric flask and add distilled water until the volume reaches 100 ml
1. When you lick a popsicle, how does thermal energy transfer between your tongue and
the popsicle? What kind of heat transfer is that?
Answers
Answer: When you lick a Popsicle, how does the thermal energy travel between the Popsicle and you tongue? What kind of heat transfer is that? Heat travels from warmer to cool objects, so thermal energy is transferred from your tongue to the Popsicle, melting the Popsicle. This kind of heat transfer is conduction.
HOPE THIS HELPS
Answer:
it transfer througe your tonuge because it is a at a higher temperture
than the popsicle
Conduction
A bicycle rider travels 50.0 Km in 2.5 hours. What is the cyclists speed?
25 km/hr
23 km/hr
20 km/hr
28 km/hr
Answers
Answer:
20 Km/hr
Explanation:
You have to divide the Km and Hr
I hope it help you
0.00045600
How many Number of sig figs ?
Answers
Answer:
5
Explanation:
Significant figures:
The given measurement have four significant figures 1234.
All non-zero digits are consider significant figures like 1, 2, 3, 4, 5, 6, 7, 8, 9.
Leading zeros are not consider as a significant figures. e.g. 0.03 in this number only one significant figure present which is 3.
Zero between the non zero digits are consider significant like 104 consist of three significant figures.
The zeros at the right side e.g 2400 are also significant. There are four significant figures are present.
Number of significant figures in given value,
5
(45600)
Melting point of a substance is what kind of property?
Answers
Answer: for the first question, Hypochloride is being released from your bleach to oxidize your fabric. As you know oxidation simply mean addition of oxygen, so when hypochloride (ClO-) comes in contact with fabric oxygen is added and some organic bonds are broken and the dirt is washed out.
For the second question. The melting and boiling point of pure substance is sharp. Like water has 100oC boiling point and OoC melting point. So anything from that means it has impurities in it. Just like if you make tea, you have introduce something else into the water, if you should try boiling your tea, you'll find out that the boiling point is not going to 100oC anymore. Every other liquid have their boiling point and melting point. When you know them, you'll be able to determine the purity.
Answer:
characteristic
Explanation:
An atom is neutral. Its nucleus contains two protons and two neutrons. How
many electrons does the atom have?
A. Four
B. Two
C. Three
D.
hero
SUBMIT
Answers
Answer:
we need to know which atom you're talking about and then you need to say what the mass number is then we can tell how many electrons there are.
(I think)
Answer:
B it has 2 electrons
Explanation:
Which category of elements is commonly used to make computer chips and solar cells due to their ability to
conduct electricity only under certain conditions?
a. metals
b. metalloids
C. nonmetals
d. noble gases
Answers
Answer:
metalloids
Explanation:
i got the answer key /:
Which of the following atoms will form an ion with the most negative charge?
(supply evidence)
Magnesium
Sulfur
Iron
Answers
Answer:
hi i don't know the answer to this
1. Combine iron and copper (II) sulfate solution. (Hint: Iron will form the iron (III) ion)
Fe + CuSO4 →
Answers
Answer:
Fe + CuSO4 -----> FeSO4 + Cu
Or when iron iii ion is formed
2Fe + 3CuSO4 -----> Fe2(SO4)3 + 3Cu
Explanation:
PLEASE HELPPPPPPPPPPPP!!
Answers
Answer:
C6H6 and C3H3
Explanation:
1st: 620 kJ/mol
2nd : 1048 kJ/mol
3rd : 9144 kJ/mol
4th : 18724 kJ/mol
5th : 24141 kJ/mol
6th : 30724 kJ/mol
7th : 38761 kJ/mol
8th : 47867 kJ/mol
9th : 59877 kJ/mol
Use the successive ionization energies for this unknown element to identify the family it
belongs to.
Answers
Since there is a big jump between the 2nd and 3rd electron, it is difficult to lose the 3rd electron so it must have a +2 charge. In others words, it belongs to the alkaline earth metals group.
PLZ PLZ PLZ PLZ HELPPPP!
Answers
Answer:
Ridges
Explanation:
Ridges separate watersheds
Hope this helped!
Determine the number of atoms of 25 g iron(II) chloride
Answers
Answer:
3.56x10²³ atoms
Explanation:
To solve this question we need first to determine the moles of iron (II) chloride, FeCl₂, using its molar mass. Then, using Avogadro's number we can solve for the number of atoms:
Moles FeCl₂ - Molar mass: 126.751g/mol-
25g FeCl₂ * (1mol / 126.751g) = 0.1972 moles
Number of atoms:
1 mole of FeCl₂ are 6.022x10²³ molecules of FeCl₂, that means 0.1972moles are:
0.1972mol * (6.022x10²³ molecules / 1mol) = 1.188x10²³ molecules of FeCl₂
In 1 molecule of FeCl₂ there are 3 atoms (1 of Fe and 2 of Cl), in 1.188x10²³ molecules of FeCl₂ there are:
1.188x10²³ molecules of FeCl₂ * (3atoms / molecule) =
3.56x10²³ atoms
Plss guys i really need it ill make you brainliest with 35 points
What is the relation between electronegativity and elements that are poor conductors of heat ? Explain
Answers
Answer:
See explanation
Explanation:
Electronegativity is the ability of an atom in a compound to attract the shared electron pair of a bond towards itself.
Electronegativity is one of the periodic trends. It decreases down the group and increases across the period. This implies that as you move from left to right in the periodic table, atoms of elements become more electronegative.
Remember also that non-metallic property increases from left to right in the periodic table. This means that as you move from left to right, metallic properties such as thermal conduction decreases.
It then follows that as electronegativity increases, electrical conductivity decreases from left to right in the periodic table.
this is a easy question.what does inertia mean?
Answers
Answer:
a tendency to do nothing or to remain unchanged.
Explanation:
Austin conducted a survey and he wants to organize his data so it is easy for him to read and analyze. What computer program should Austin use?
Group of answer choices
Excel Online
Graph Designer
Survey Organizer
Word Online
Flag this Question
Question 7
Answers
Graph Designer
Hope This Helped!!!:)
Answer:
it Exile Online
Explanation:
trust me i did it
state the valency of Al in Al²03
Answers
Answer:
hi
jhy
jj
Explanation:
uythi;ghto
ggh
2 points
Identify the basic law on the behavior of matter: States that mass is
neither created nor destroyed in a chemical reaction or physical changes.
Law of conservation of mass
Law of definite proportions
Law of multiple proportions
Identify the scientist that contributed to the atomic theory: He conducted 2 points
d the nucleus has a nositive charge.
Answers
Answer:
Law of conservation of mass
Ernest Rutherford
Explanation:
The basic law of behavior of matter that states that "mass is neither created nor destroyed in a chemical reaction or physical change".
This is the law of conservation of mass. It is very essential in understanding most chemical reaction. Also, in quantitative analysis, this law is pivotal.
Ernest Rutherford was the scientist that stated that the nucleus is made up of positive charge. It was not until James Chadwick in 1932 discovered the neutron that we had an understanding of this nuclear component.
Rutherford surmised from his experiment that because most the alpha particles passed through the thin Gold foil and just a tiny fraction was deflected back, the atom is made is made up of small nucleus that is positively charged.
PLSSS HELPP ASAP!!!!!!!!
I DO
Alfred Wegener, the geologist who proposed the theory of continental drift, also
coined the term for the ancient supercontinent, Pangaea. Later geologists have
recovered evidence that the land masses that made
up Pangaea, including Africa and
South America, were once close to one another. One of their main sources of data is
a-
A group of samples of new oceanic crust from ocean basins.
B set of surveys showing the distribution of island arcs.
C set of seismology readings from deep sea trenches.
Dlarge group of plant and animal fossils.
Answers
Answer:
d
Explanation:
He went exploring around the world and found the same species in different areas of the world
Normal
Question 1
Persons who have immigrated to Europe illegally most likely do so because they believe that
A
life will be better there than in their countries of birth
B
there is very little chance of being sent back home
C
it is very easy to move there legally
D
current residents are happy to help them
Answers
A or c fr !! Ok so I pick a and got it right
8 CO + 17 H2 → C8H18 + 8 H20
Assuming an unlimited supply of hydrogen gas (H2), how
many moles of C3H18 could be produced with 26.79
moles of carbon monoxide (CO)?
Answers
Answer:
74.21
Explanation:
it has 18 hydrogen and 3 carbon it has produce so the 26.79moles of carbon monoxide will not produce
How many molecules are in 2.50 moles of H2O?
0 1.51 X 1024 molecules of H20
0 4.15 X 10-24 molecules of H20
0 3.01 X 1024 molecules of H20
O 8.31 X 10-24 molecules of H20
Answers
Answer:
[tex]A.1.51*10^{24}\ molecules\ of\ H_2O[/tex]
Explanation:
[tex]We\ are\ given:\\No.\ of\ moles\ of\ H_2O\ provided=2.5\ moles\\Now,\\We\ know\ that,\\ Avagadro's\ Constant=6.022*10^{23}\\Now,\\We\ also\ know\ that:[/tex]
[tex]No.\ of\ particles=No.\ of\ moles*Avagadro's\ Constant\\Hence,\ here,\\No.\ of\ molecules\ in\ 2.5\ moles\ of\ H_2O=2.5*6.022*10^{23}\\Hence,\\No.\ of\ molecules\ in\ 2.5\ moles\ of\ H_2O=15.055*10^{23}\ H_2O\ molecules\\Now,\\No.\ of\ molecules\ in\ 2.5\ moles\ of\ H_2O=1.5055*10^{24}\ H_2O\ molecules\\ or\ 1.51*10^{24}\ H_2O\ molecules[/tex]
What is the representative particle for potassium chloride?
Answers
Nana a she’s a little while she’s in here a lot better lol I just don’t have her number I think she was just joking around that I didn’t know if she
What is the chemical formula for carbon tetrabromide?
Answers
The answer to your question is "CBr4"
Explain how cells can only come from pre-existing cells. How does that work ?
Answers
Answer:
Cells can only be formed by division of pre-existing cells. [Students should be aware that the 64 codons in the genetic code have the same meanings in nearly all organisms, but that there are some minor variations that are likely to have accrued since the common origin of life on Earth
Explanation:
If n gains 3 electrons from other atoms why is it written n with a -3
Answers
Awnser:
n is written with a negative 3 because electrons have a negative charge and n or neutrons have no charge. therefore n has a charge of -3
What is magma called once
leaves a volcano?
Answers
Answer:
lava
Explanation:
Can someone please help me
Answers
Answer:
letter B
Explanation:
HOPES THIS HELPS
