Answer:
1.52 M
Explanation:
Molarity of a solution is calculated as follows:
Molarity = number of moles (n) ÷ volume (V)
Based on the information given in this question,
Volume of soda (V) = 9.13 L
number of moles = 13.83 mol
Molarity = 13.83 ÷ 9.13
Molarity = 1.52 M
What is the symbol for half-life?
Answer:
The first one
Explanation:
Half-life (symbol t1⁄2) is the time required for a quantity to reduce to half of its initial value. The term is commonly used in nuclear physics to describe how quickly unstable atoms undergo radioactive decay or how long stable atoms survive.
I don’t get it need some help please and thank you
Answer:
A. like poles of magnets repel each other
B. Unlike poles of magnets attract each other.
C. The magnet's force is stronger than the earth's at this distance
Explanation:
From the diagram given, we can take the portion of the compass painted red to be the north, and the porion painted white to be the south.
In the first diagram, the north of the compass gets attracted to the south of the compass showing, that unlike poles attract each other and like poles repel each other.
In the second diagram, the south of the compass needle gets attracted to the north of the magnet showing, that like poles repel each other, and unlike poles attract each other.
The mere fact that the compass needle is not pointing towards the north shows that it is being affected by the magnet placed beside it. Normally every compass held under the influence of the magnetic pull of the earth points north. But since this is not the case here, we can say that The magnet's force is stronger than the earth's at this distance
Please help me, I will give you brainlist
Answer:
ʟᴇᴛᴛᴇʀ: ᴄ.
Explanation:
ɪʙᴀ ᴀɴɢ ᴇxᴘʟᴀɴᴀᴛɪᴏɴ sᴀ ʟᴀʜᴀᴛ ɴɢ ᴀɴsᴡᴇʀ
What happens to water molecules when a large quantity of thermal energy is added to water in the liquid state?
Answer:
The molecules gain kinetic energy, more farther apart, and become a gas.
Explanation:
Answer:
Explanation:
Continued heating of liquid water causes the molecules to vibrate even faster, steadily raising the temperature, Freezing When liquid water freezes, it releases thermal energy and turns into the solid-state, ice.
Which radioisotope is naturally occurring?
Answer:
[tex]\frac{131}{53} I[/tex]
Explanation:
A naturally occurring element is an element that is not produced in a nuclear reaction.
Most of the trans-uranium elements are not natural, they are all synthetic elements which are produced as a result of nuclear reactions. They are unknown in nature.
Apart from [tex]\frac{131}{53} I[/tex], all other radioisotopes listed among the options are not natural elements.They are products of nuclear reactions.
6 moles of H2O is equal to how many molecules?
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 3.612x10²⁴molecules are in 6 moles of H[tex]_2[/tex]O.
What is mole?
The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample. There are so many formula for calculating mole.
we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number
number of atoms/molecules=number of moles × 6.022×10²³(Avogadro number)
number of moles of H[tex]_2[/tex]O= 6 moles
Substituting all the given values in the above equation, we get
number of atoms/molecules=6.022×10²³x6
number of atoms/molecules= 3.612x10²⁴molecules
Therefore, 3.612x10²⁴molecules are in 6 moles of H[tex]_2[/tex]O.
To know more about mole, here:
https://brainly.com/question/15209553
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Which one of the following pairs of separation techniques will BOTH separate salt from a mixture of salt and water?
Answer:
What are the options and i dont know what the options are but if one of them is distilation im 99.9% sure that is the answer.
Explanation:
Be sure to friend me and mark me as braniliest if im correct!
A diagram of the areas surrounding the Gulf of Mexico is provided. A hurricane that comes in from the Gulf of Mexico will most likely have which of the following effects on Texas habitat?
A- Birds that eat fish on Galveston Island become extinct.
B- Trees in and around Austin are uprooted by heavy winds
C- Plants on Goose Island are killed by a surge of salt water.
D- Rains create new marshlands habitats in Brazos Bend.
Answer:
a
Explanation:
a!!$!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Drag the slider from January to December. Based on what you observe, do you think Barcelona has large temperature changes throughout the year?
Answer:
Yes.
Explanation:
Yes, I think that Barcelona has large temperature changes throughout the year because Barcelona has minimum temperature of 33°F in winter season and maximum temperature of 88°F in summer season. In Barcelona, the summers are short, warm, and humid while on the other hand, the winters in Barcelona are long, cold, and partly cloudy. The temperature typically varies from 40°F to 83°F and is rarely goes below 33°F or above 88°F.
how does electromagnetic energy travel?
Electromagnetic radiation is a form of energy that propagates as both electrical and magnetic waves traveling in packets of energy called photons. There is a spectrum of electromagnetic radiation with variable wavelengths and frequency, which in turn imparts different characteristics.
This means that electromagnetic waves can travel not only through air and solid materials, but also through the vacuum of space. ...
ILL GIVE YOU BRAINLIEST!!!!Which of the following is an example of a description of climate? *
1 point
the relative humidity in Raleigh, NC
the current temperature in Knightdale, NC
the amount of rainfall in last week's storms added together
the average temperature and precipitation in Raleigh, NC over the past 30 years
Answer:
The relative humidity in Raleigh, NC
You can search it up online. Search up what is climate change and it will give you "the weather conditions prevailing in an area in general or over a long period." (On bing)
Explanation:
Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!
What is the pressure?
Phytoplankton are a diverse group of unicellular organisms that are neither plants nor animals. Phytoplankton use sunlight, carbon dioxide, and nutrients to live and grow. Do you think phytoplankton are producers, consumers, or decomposers? Explain your reasoning.
Answer:
They are producers
Explanation:
Phytoplankton are producers and this is because they synthesis their own food and produce energy. They photosynthesized and convert carbondioxide and water in the presence of light energy and chlorophyll to carbohydrates and oxygen. They are producers because they produce their own food.
Question 1
What would you do to balance this reaction?
N.
2
H₂
NH3
a
H
A. Double the coefficient of N2 (2 N2)
B. Multiply coefficient of H, by 3 (3 H2)
C. Multiply subscripts of Hy by 3 ( H.)
D. Double the subscripts for NH3 (N2H)
E. Double the coefficient of NH3 (2NH3)
Answer:
Explanation:
nm
How do you write balance equations Fe2 S3+O2-Fe2O3+SO2
Answer:
2Fe2 S3+6O2 → 2Fe2O3+3SO2
Explanation:
A sample of nitrogen gas is at a temperature of 50 c and a pressure of 2 atm. If the volume of the sample remains constant and the pressure increases to 3.2 atm, what ist eh enw temperature of the nitrogen gas
Answer:
The new temperature of the nitrogen gas is 516.8 K or 243.8 C.
Explanation:
Gay-Lussac's law indicates that, as long as the volume of the container containing the gas is constant, as the temperature increases, the gas molecules move faster. Then the number of collisions with the walls increases, that is, the pressure increases. That is, the pressure of the gas is directly proportional to its temperature.
Gay-Lussac's law can be expressed mathematically as follows:
[tex]\frac{P}{T} =k[/tex]
Where P = pressure, T = temperature, K = Constant
You want to study two different states, an initial state and a final state. You have a gas that is at a pressure P1 and at a temperature T1 at the beginning of the experiment. By varying the temperature to a new value T2, then the pressure will change to P2, and the following will be fulfilled:
[tex]\frac{P1}{T1} =\frac{P2}{T2}[/tex]
In this case:
P1= 2 atmT1= 50 C= 323 K (being 0 C= 273 K)P2= 3.2 atmT2= ?Replacing:
[tex]\frac{2 atm}{323 K} =\frac{3.2 atm}{T2}[/tex]
Solving:
[tex]T2*\frac{2 atm}{323 K} =3.2 atm[/tex]
[tex]T2=3.2 atm*\frac{323 K}{2 atm}[/tex]
T2= 516.8 K= 243.8 C
The new temperature of the nitrogen gas is 516.8 K or 243.8 C.
which of the following is a product in the chemical equation N + O2 = NO2
1. NO2
2. N
3. O
4. O2
Which of the following reasons (specific to this lab) would have caused the percent yield of calcium carbonate to be less than 100%? Highlight all that apply (there may be more than one)
Some of the sodium carbonate never fully dissolved in the water and did not transfer when mixed with calcium acetate
The glassware used to mix the reactant solutions were not properly dried before use
Some of the calcium carbonate remained stuck to the side of the glassware after filtering
The product, calcium carbonate, was not fully dried out before weighing
Some of the calcium carbonate spilled when measuring its mass
Answer:
Some of the calcium carbonate remained stuck to the side of the glassware after filtering
Some of the calcium carbonate spilled when measuring its mass
Explanation:
The percent yield is obtained from;
Actual yield/Theoretical yield * 100
Usually, the actual yield is less than the theoretical yield thereby making the percent yield less than 100%.
In the case of this particular reaction; when some calcium carbonate remains stuck on the glassware or some calcium carbonate is spilled during weighing, the actual yield of product obtained from the reaction becomes less than the theoretical or calculated yield hence the percent yield becomes less than 100%.
if the lightbulb receives 100 J of electrical energy, and gives off 75 energy, how much heat (thermal energy away from the lightbulb?
Answer:
Amount of heat energy released by light bulb = 25 joules
Explanation:
Given:
Energy receive by light bulb = 100 Joules
Energy released by light bulb as light energy = 75 Joules
Find:
Amount of heat energy released by light bulb
Computation:
We know that, energy is neither be created nor destroys
So,
Using Law of conservation of energy
Energy receive by light bulb = Energy released by light bulb as light energy + Amount of heat energy released by light bulb
100 = 75 + Amount of heat energy released by light bulb
Amount of heat energy released by light bulb = 100 - 75
Amount of heat energy released by light bulb = 25 joules
What were some of the causes of the Amu Darya and Syr Darya rivers being ruined?
urban sewer drainage
tannery dumping
tourism
drying up
agricultural chemicals
Answer:
drying up
agricultural chemicals
Explanation:
1) Ions are formed between positive or negative charge.
2) Which one is not an ionic compound?
a) LiCl
b) MgBr 2
c) CaO
d) HCl
3) Write down chemical formula of ionic compound between Potassium (K) and Sulfur (S)?
4) How many valence electrons Group 1 elements have?
5) When group 1 element want to become stable by forming an ion, what will be its
charge?
6) How many valence electrons group 2 elements have?
7) When group 1 element want to become stable by forming an ion, what will be its
charge?
8) How many valence electrons group 16 elements have?
9) When group 16 element want to become stable by forming an ion, what will be its
charge?
10) List two properties of ionic compounds.
Answer:
1. No 1 looks like a statement and not a question.
2.Ionic compounds are usually formed from the transfer of electrons from metals to Non metals. All others are Ionic compounds except HCl(Its a covalent compound).
3. The Formula would be K2S. Exchange of Radicals takes place. Sulphur has a -2 charge and potassium has a +1 charge. when they both exchange radicals... The compound is K2S.
4.Group 1 elements have only 1 electron in their outermost shell.
5. its charge will be +1 because it loses the 1 electron in its outermost shell.
6.Group 2 elements have 2electrons in their Valence shell.
7.Already answered. same as No 5.
8. Group 16;Also known as group 6. They have only 6 electrons in their outermost shell.
9.When they want to become stable... they acquire 2electrons to complete their octet... so they possess a -2 charge by forming an ion.
10. i)They form ions when Dissolve in solutions
ii) They are hard and brittle
iii) They have high boiling points
List and describe the four layers of the Earth.
Answer:
Crust- thinest layer; the part we live on
Mantle- just beneath the crust; consists of magma
Outer Core- liquid metal; super hot; thickest layer (i think)
Inner Core- solid metal; SUPER compressed; hottest layer
At a particular temperature, K = 2.0 × 10-6 for the reaction
2CO2(g) ⇌ 2CO(g) + O2(g)
In an experiment 15.95 mol of CO2 is initially placed in a 1.6 L vessel. Calculate the equilibrium concentration of O2.
Give your answer to 4 decimal places.
Answer:
y = 0.037 M = [O₂]
Explanation:
Let's write the equilibrium reaction:
2CO₂ <--------> 2CO + O₂ K = 2x10⁻⁶
The problem states that we have initially 15.95 mol of CO₂ in a 1.6 L vessel. With this we can determine the concentration:
M = moles / V
[CO₂] = 15.95 / 1.6 = 9.97 M
Now, we need to write an ICE chart so we can have the equilibrium concentrations:
2CO₂ <--------> 2CO + O₂ K = 2x10⁻⁶
I. 9.97 0 0
C. -2y +2y +y
E. 9.97-2y 2y y
K = [CO]² [O₂] / [CO₂]² Replacing we have:
2x10⁻⁶ = (2y)² (y)² / (9.97 - 2y)² But K is <10⁻⁴ so we can neglect the substraction of 9.97 - 2y, we have then:
2x10⁻⁶ = 4y² (y) / (9.97)²
2x10⁻⁶ * (9,97)² = 4y³
y = ∛2x10⁻⁶ * (9,97)² / 4
y = 0.037 M = [O₂]Hope this helps
NEED HELP ASAPPP
What is the number of beryllium atoms in 78.0g of Be?
Answer: number of atoms is 5.21 · 10^24
Explanation: Atomic mass of Be is 9.012 g/mol.
Number of moles n = m/M = 78.0 g / 9.012 g/mol =
Multiply this with Avogadro number Na = 6.022*10^23 1/mol
A car travels at 60 m/s for 8 seconds. Calculate the distance it traveled.
480 meters
hope this helped!
4. Calculate the total heat required to convert 23.6 g of ice at -27 ºC to steam at 121 ºC. Hint: Calculation involves more than 1 step.
5.How much heat, in kJ, is needed to convert 12.8 g of ice at -18 ºC to steam at 118 ºC? Hint: Calculation involves more than 1 step.
Answer:
filedownload.ashx heres a pdf
Explanation:
Which of the following is the correct Lewis dot structure for F2?
Answer:b
Explanation:
Correct dot
what is pollination?
Why does such a small decrease in pH mean such a large increase in acidity?
Answer:
pH is an index of how many protons, or hydrogen ions (H+) are dissolved and free in a solution. The pH scale goes from 0 to 14. A fluid with a pH of 7 is neutral. Below 7, it is acidic; above 7, it is alkaline.
The more below or above 7 a solution is, the more acidic or alkaline it is. The scale is not linear—a drop from pH 8.2 to 8.1 indicates a 30 percent increase in acidity, or concentration of hydrogen ions; a drop from 8.1 to 7.9 indicates a 150 percent increase in acidity. Bottom line: Small-sounding changes in ocean pH are actually quite large and definitely in the direction of becoming less alkaline, which is the same as becoming more acidic.
If you think about it, we use descriptive words like this all the time. A person who stands 5’5” tall and weighs 300 pounds isn’t thin. If he loses 100 pounds, he still won’t be thin, but he will be thinner than he was before he went on the diet. (And we are more likely to comment that he’s looking trimmer than to say he’s not as fat as he used to be.)
NEED HELP!!! PLEASE, AND THANK YOU!! ^^ <3
Bentley found the notes below that he took during health science class in school. However, they are missing a title. Medical professionals are likely to give them during their career, for example, when delivering staff training. It is a good idea to use visual aids and give handouts. To be most effective, choose a topic you are familiar with, practice in advance, speak clearly, and provide opportunities for the audience to respond. What is the most accurate title for his notes? A- how to prepare a verbal report B- all about written reports C- writing professional letters D- what are oral presentations?
Answer:
a) how to prepare a verbal report
Explanation:
Answer:
a. how to prepare a verbal report
Explanation:
have a nice day!
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