Answer:
the first is the answer
What can happen when tectonic plates move a few centimeters?
A. The atmosphere can become cooler.
B. Whole continents can move.
C. The ozone layer can thicken.
D. The moon can move closer to Earth.
Answer: B. Whole continents can move
Explanation:
Answer:the answer is b Whole Contenints can move
Explanation:took the test and got it right
Dr. Murrays science class recently read about an experiment that had surprising results. The decided to perform the experiment in their class, but they used more advanced methods. Their results
The question is incomplete, the complete question is;
Dr. Murray's science class recently read about an experiment that had surprising results. They decided to perform the experiment in their class, but they used more advanced methods. Their results
must be completely different, but they are more reliable.
could be the same as before, or they could be completely different.
must be the same as the recorded results, but they are more reliable.
could be the same as the recorded results, or they must be inconclusive.
Answer:
could be the same as before, or they could be completely different.
Explanation:
Now we know that in carrying out a scientific research, there is such a thing as replication.
Replication means that other scientists in other places carry out the same experiments previously done and expect to obtain the same results as the first time the experiment was done.
However, this is not a case of replication because a different and more advanced method was used in the experiment. Once the methodology of the experiment has been changed, then the results could be the same or different. Hence the answer above.
What type of bond is formed between sodium and sulfur
Answer:
The Bond would Be ionic
Explanation:
Thier electronegativites are way to differnt so Sulfur would steal from Sodium
chemical formula for tin iv carbide
Answer:
Explanation:
Sn(WC)2
if it is tungsten carbide this should be correct but there are many versions of carbide
Sn(MC2)2
could also be possible
the 2 next to MC should be a subscript
Who discovered phosphate?
Answer:
Hennig Brand
Explanation:
hey martin991 im sorry i just realized that was a dif account please forgive me plz help me and HAPPY NEW YEAR ♧
Energy stored in the bonds between atoms is called
A.kinetic energy.
B.mechanical energy.
C.chemical energy.
D.thermal energy.
Answer:
A. Kinetic energy
Explanation:
Kinetic energy is stored in the bonds between atoms.
SHOW WORK
A hummer weighs 3.2 tons, what is the weight in pounds (lbs)?
Calculate the mass of .0605 moles of crystalline sucrose. Sucrose is C12 H22 O11 . The molar mass is __________ g/mole. Show your work below and record your answer.
Answer:
20.7g/mol
Explanation:
Please help me!!!!!!!!!!!!!!
TOPICAL ASSINMENT 2
1. If 25cm' of O.IM H,SO, solution neutralised a solution containing 1.06g anhydrous sodium carbonate in
250cm. of solution, calculate the molarity and the volume of the sodium carbonate solution used. (3mks)
The molarity = 0.04 M
The volume = 6.25 ml
Further explanationGiven
25cm³ of 0.1 M H₂SO₄
1.06g Na₂CO₃ in 250cm³ of solution
Required
the molarity and the volume of Na₂CO₃
Solution
Molarity of Na₂CO₃ :
[tex]\tt \dfrac{1.06/106~mol}{0.25~L}=0.04~M[/tex]
Reaction
H₂SO₄ + Na₂CO₃ ⇒Na₂SO₄ + H₂O + CO₂
mol H₂SO₄ = 25 x 0.1 = 0.25 mlmol= 2.5 x 10⁻⁴ moles of Na₂CO₃
The volume of solution used :
[tex]\tt V=\dfrac{n}{M}=\dfrac{2.5.10^{-4}}{0.04}=6.25.10^{-3}~L=6.25~ml[/tex]
Identify the reaction type shown and describe the clues that were used to identify it. Fe2O3 + 2SiO2 → Fe2Si2O7
The type of reaction of Fe2O3 + 2SiO2 → Fe2Si2O7 would be that it is a synthesis reaction. It is a type of chemical reaction in which two or more simple substances combine to form a more complex product.
Answer:
The type of reaction of Fe2O3 + 2SiO2 → Fe2Si2O7 would be that it is a synthesis reaction. It is a type of chemical reaction in which two or more simple substances combine to form a more complex product. Hope this answers the question.
Explanation:
The force of gravitational attraction between two objects depends on the distance between the objects and their_____ 1. Buoyancies 2. Temperature 3. Masses 4. Shapes
Answer:Newton's law also states that the strength of gravity between any two objects depends on two factors: the masses of the objects and the distance between them.
Objects with greater mass have a stronger force of gravity between them. ...
Objects that are closer together have a stronger force of gravity between them.
Explanation:
hope it helps
Answer:
masses
Explanation:
Which of the following statements about nonmetal elements is true?
A.) Nonmetal elements are stronger than metals.
B.) Nonmetal elements are never used in computers.
C.) Nonmetal elements are sometimes cheaper to make.
D.) Nonmetal elements are used only in laptop computers.
Answer:
C
Explanation:
The statement which is true about non-metal elements is as follows:
Nonmetal elements are sometimes cheaper to make.Thus, the correct option for this question is C.
What are Non-metals?Non-metals may be defined as those chemical elements that significantly lack the attributes of metals. They generally range from colorless gases to shiny and high melting point solids. Some examples of non-metals include boron, carbon, nitrogen, etc.
Non-metals are not stronger than metals because the arrangement of bonds in metals is highly compacted. Non-metals are very frequently utilized in the manufacture of computers, laptops, and other electronic devices along with metals. But most of the time non-metals are cheaper to synthesize.
Therefore, non-metal elements are sometimes cheaper to make is a statement that is true about non-metal elements. Thus, the correct option for this question is C.
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hey what's the value of pi till
5 digits after decimal
Answer:
Pi to 5 decimals is 3.14159-
Brainlist pls!
P.S. It's a repeating number, but you can just put a (-), so that you don't have to type the whole thing out.
Answer:
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two gasses in the air that cause rusting
Answer:
oxygen and Hydrogen
Explanation:
Oxygen and Hydrogen causes rusting on metals after combining with moisture
What is the electron configuration for sulfur?
A. 1s2 2s2 2p6 3s2 3p4
B. 1s2 1p6 2s2 2p6 3s2
C. 1s2 2s2 2p6 3s2 3p3 4s1
D. 1s2 2s2 2p6 3p1 3d5t
Answer:
A. 1s2 2s2 2p6 3s2 3p4Explanation:
i hope it helps :)
Answer:
1s2 2s2 2p6 3s2 3p4
Explanation:
below
How many oxygen atoms are there in 5 molecules of Al2(SO4)?
Answer:
There are two aluminum ions and three sulfate ions; or two aluminum, three sulfur, and twelve oxygen atoms.
Explanation:
In 5 molecules of Al₂( SO₄ ) there are 20 oxygen atoms are present. In one molecule of aluminum sulphate there are 4 oxygen atoms present and in 5 molecules of Al₂( SO₄ ) 20 oxygen atoms present.
What is molecule ?According to the environment, the word may or may not include ions that meet this requirement. A molecule is a collection of two or more atoms bound together by the attractive forces known as chemical bonds.
There are three different kinds of molecules: atom-sized molecules, element-sized molecules, and compound-sized molecules.
A molecule is the smallest unit of any material that is composed of one or more elements and is capable of existing independently while maintaining all the substance's physical and chemical characteristics. Further atom division occurs within molecules.
Thus, In 5 molecules of Al₂( SO₄ ) there are 20 oxygen atoms are present.
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What does dehydration cause?
Dehydration can lead to a loss of strength and stamina. It's a main cause of heat exhaustion. You should be able to reverse dehydration at this stage by drinking more fluids. If dehydration is ongoing (chronic), it can affect your kidney function and increase the risk of kidney stones.
[I copied this from the internet, but hope this helps!]
Can anyone explain this to me?
Helpppp
Which of these is the BEST
description of extinction?
Answer:
d
Explanation:
Proteins are
A) built in the nucleus by DNA and transported to the ribosomes.
B) converted from nucleic acids to amino acids in the nucleolus.
C) made on ribosomes and then transported to golgi appartus.
D) created in the nucleus and then shipped to the parts of the cell where they are needed
Answer:
I would say B
Explanation:
If I'm wrong I apologize, have a good day
[tex] \huge \mathfrak \red{hello...}[/tex]
[tex] \blue{The \: correct \: answer \: is \: (C).}[/tex]
Thanku...Balance the following chemical
equation by providing the correct
coefficients.
[? ]FeBr3 + []Na2S → Fe2S3 + NaBr
Answer:
2FeBr₃ + 3Na₂S → Fe₂S₃ + 6NaBr
Explanation:
The expression to be balanced is given as:
FeBr₃ + Na₂S → Fe₂S₃ + NaBr
To balanced this chemical equation, we can use a simple mathematical approach.
Simply use the alphabets a, b, c and d to represent the numbers that will make the equation balanced;
aFeBr₃ + bNa₂S → cFe₂S₃ + dNaBr
Conserving Fe;
a = 2c
Conserving Br;
3a = d
Conserving Na;
2b = d
Conserving S;
b = 3c
Let a = 1, b = [tex]\frac{3}{2}[/tex]
c = [tex]\frac{1}{2}[/tex] d = 3
Multiply through by 2 to get whole number ratios;
a = 2, b = 3 , c = 1 and d = 6
2FeBr₃ + 3Na₂S → Fe₂S₃ + 6NaBr
2) If 100.0 J of heat are added to 20.0 g of water at 30.0°C, what will be the final
temperature of the water? What would the temperature be in Kelvin?
Which group of elements will completely fill their s and p valence subshells?
Answer:
Nobel Gases will have a full p valance shell aswell as a s subshell
Explanation:
an object with a mass of 300 kg is observed to accelerate at the rate os 4m/s² what is the total force required
Answer:
75 Newton
Explanation:
In order to find the force of the object, you must remember that the equation N = (mass x acceleration). Therefore meaning you would divide 300 kilograms, the mass, by 4 meters per second (squared), the acceleration.
Why does the complete combustion of methane and octane produce the same product?E
Answer:
Because they are both of the same functional groups (alkane)
Dry hydrogen chloride was bubbled in methylbenzene and sodium carbonate added . Explain this observation.
Answer:
No observable change, unless dry hydrogen Chloride reacted in presence of a peroxide (ROOR)
________ is the enthalpy change when 1 mole of a substance is formed from its elements under standard conditions.
A. ΔHθc
B. ΔHθn
C. ΔHθf
D. ΔHθa
The correct answer is C. ΔHθf
We define the standard enthalpy of formation as the enthalpy change when one mole of a substance is formed from its elements under standard conditions. The standard conditions are 1 atm pressure, 273 K temperature and 1 M concentration.
The standard enthalpy of formation is denoted using the symbol ΔHθf.
Hence, ΔHθf is the enthalpy change when 1 mole of a substance is formed from its elements under standard conditions.
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Explain the horizontal periodic trend
Answer:
Trends on the Periodic Table have a vertical component and a horizontal component. Vertical trend: as more “shells” are added to the electron cloud, it expands. Horizontal trend: if atoms have the same number of “shells”, atoms with more protons will draw the electron cloud in tighter.
Explanation:
The southern United States experiences periodic occurrences of severe cold and drought conditions. Which weather phenomenon most likely causes this and why?
The weather phenomenon that most likely causes periodic cold is:
La NinaThis is caused by the:
Jet stream which moves to the south sideIn the Southern United States, there is a weather phenomenon which occurs when there is only a periodic occasion of severe cold. This happens because of what is called La Nina that occurs as a result of the movement of the jet stream.
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