Potassium atom would not bond with a calcium atom because two metals because they are not capable of accepting electrons.
What is a Metal?This is referred to as a substance with high electrical conductivity, luster, and malleability, which readily loses electrons to form positive ions known as cations.
The formation of chemical bonds in a reaction requires a change in electron distribution which can only be possible when one of the elements participating in the reaction can accept electrons and is therefore the reason why two metals such as potassium and calcium atom can't form a reaction but two non metals can.
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7. Lli(s) + N₂(g) → 2 Liz Ncs)
How
many
moles of Lithium
are needed to
produce 1.60m of Liz N ?
a-1.80 b- 4.80 c-1.60 d-3.20
The number of mole of lithium, Li needed for the reaction is 3.2 moles (Option D)
Balanced equation4Li + N₂(g) → 2Li₂N
From the balanced equation above,
2 moles of Li₂N were obtained from 4 moles of Li
How to determine the mole of lithium neededFrom the balanced equation above,
2 moles of Li₂N were obtained from 4 moles of Li
Therefore,
1.6 moles of Li₂N will be obtained from = (1.6 × 4) / 2 = 3.2 moles of Li
Thus, 3.2 moles of Li are needed for the reaction
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earth's atmosphere is approximately 78% nitrogen and 21% oxygen. what is the mass in grams of oxygen in a cubic meter of air in a typical classroom at 1 atm and 25C (1m^3=1000L)
With the earth's atmosphere at approximately 78% nitrogen and 21% oxygen, we have that the mass in grams of oxygen is mathematically given as
Mass of O2=2.74.7g
What is the mass in grams of oxygen?Question Parameters:
Earth's atmosphere is approximately 78% nitrogen and 21% oxygen.
Generally, the equation for the ideal gas is mathematically given as
PV=nRT
Therefore
n=PV/RT
n=1*1000L/0,0821*298k
n=40.87mol
In conclusion
Where mole of O is 8.58
Therefore
Mass of O2=8.58*32
Mass of O2=2.74.7g
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Answer: 275 grams
Explanation:
3. Tom wants to make some copper oxide. Sally suggests he could make it by burning copper metal in air.
a) Why is Sally wrong?
Answer:
Because burning copper in air won't oxidize it you need to leave it in contact with air only
Explanation:
One of the most important things you can do for yourself before you apply for a job is take a(n) ________ of your skills and experiences.
A.
mental picture
B.
photograph
C.
inventory
D.
memory
Answer:
C. inventory.
The answer is inventory.
Explanation:
Have a great day!! Brainliest will really help me since I have SO MANY POINTS and barely any crowns. Tysm, if you help! Hope this helps you!
The screenshots are below for question 44 of the Exam.
1)what advice would you give a friend or family member about managing their own waste?
2) Explain what you think it will take to restore and regenerate our world?
dont trow it away
Explanation:
if you dont want it for later give it to someone
1.
• Reduce your food waste
According to the U.S. Environmental Protection Agency (EPA), the largest component of municipal solid waste sent to landfills is food. Therefore, the most effective way to reduce your household waste is to reduce and divert food scraps! Get some tips on reducing food waste that can save you money. Planning is key; make sure to shop with a list, take inventory of your fridge, use your leftovers, and store food properly. Additionally, certain food scraps are edible! Click here to learn more about cooking with food scraps.
After making efforts to reduce food waste, any residual food scraps can be diverted in several ways! You can feed food scraps to animals like chickens (although we discourage feeding food scraps to pigs), start a compost pile in your backyard, compost indoors with a worm bin, contact your trash and recycling hauler about curbside food scrap collection, or bring food scraps to your town’s drop-off. Additionally, we accept food scraps from residents for free at the District Transfer Station. Call us at 388-2333 for more info on the disposal of food scraps.
• Paper or plastic? Neither!
Use reusable bags instead for all of your shopping needs. Don’t just limit this to grocery shopping—bring reusable bags when shopping for clothes, books, household goods, etc. You can also use reusable produce bags to purchase loose food items (such as fruits and veggies) from the grocery store.
If you find yourself forgetting your bags at home, try storing bags in your car. Or, purchase folding reusable bags and keep them in your purse, on your keychain, or in your pocket at all times. For a more extreme solution, you can force yourself to return home for your bags if you catch yourself forgetting, or make yourself carry your purchases out of the store without a bag. Chances are, you will remember this unpleasant experience and be significantly less likely to forget your bags next time!
• Say no to bottled water
Instead, carry a reusable water bottle. It is a myth that bottled water is healthier than tap water—although both tap and bottled water are federally regulated in the U.S., tap water has stricter quality and health standards than bottled water. Benefit the environment, your health, and your finances by embracing the tap and going reusable!
#2
Simple Things You Can Do to Help Protect the Earth
• Reduce, reuse, and recycle. Cut down on what you throw away. Follow the three "R's" to conserve natural resources and landfill space.
• Volunteer. Volunteer for cleanups in your community. You can get involved in protecting your watershed, too.
• Educate. When you further your own education, you can help others understand the importance and value of our natural resources.
• Conserve water. The less water you use, the less runoff and wastewater that eventually end up in the ocean.
How many grams in total of potassium dichromate are there in a 250 mL bottle filled with 5 ppm solution of it?
The mass of is K2CrO7 in the 250 ml of solution is mathematically given as
x=1.25mg of K2CrO7.
Hence, 250 ml of the solution will contain 1.25mg of K2CrO7
The mass of is K2CrO7Question Parameters:
The total of potassium dichromate are there in a 250 mL bottle filled with 5 ppm solution
Generally the mass of k2CrO7 is mathematically given as
[tex]x=\frac{5mg of k2CrO7 *250ml of solution}{1000ml of solution}[/tex]
x=1.25mg of K2CrO7
Therefore,
250 ml of the solution will contain 1.25mg of K2CrO7
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5. What are the correct coefficients in order for the equation to be balanced?
Explanation:
I hope you benefit from this
This is the correct coefficient...
2. A gas that occupies a volume of 6.75 L at 89.0 atm will occupy what volume at 68.55 mm Hg if the temperature remains constant?
First convert pressure to atm
1atm=760mm hg68.55 mm Hg= 0.09atmNow
V1=6.75LV2=?P1=89atmP2=0.09atmApply Boyle's law
[tex]\\ \rm\Rrightarrow P1V1=P2V2[/tex]
[tex]\\ \rm\Rrightarrow 89(6.75)=0.09V2[/tex]
[tex]\\ \rm\Rrightarrow 600.75=0.09V2[/tex]
[tex]\\ \rm\Rrightarrow V2=\dfrac{600.75}{0.09}[/tex]
[tex]\\ \rm\Rrightarrow V2=6675L[/tex]
Adding vinegar to baking soda will cause a chemical reaction. Which of these will speed up the reaction?
A. Use a block of baking soda instead of powdered baking soda.
B. Add warm vinegar instead of cold vinegar to the baking soda.
C. Mix the vinegar and soda in a small jar instead of a large one.
D. Add cold water to the vinegar before adding the baking soda.
tungsten (IV)thiosulfate
What is the formula?
Answer:
The formula of Tin (IV) Thiosulfate is Sn(S₂O₃)₂
-TheUnknownScientist 72
You have an isotope with 23 protons and 29 neutrons. What is the mass number?
Answer:
52
Explanation:
Mass number is the sum total of protons and neutrons in an element
Therefore, Mass number = protons + neutrons
Mass number = 23 + 29
Mass number = 52
state the conditions essential for an isothermal process to occur.
thankyou #)
[tex] \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ \\ [/tex]
Answer:
The container should be perfectly conducting to the surroundings. ii) The process must be carried out very slowly so that there is sufficient time for exchange of heat with the surroundings so that temperature remains constant.
The conditions essential for an isothermal process to occur is:
The system must be properly conducive to the surroundingsThe procedure must be carried out slowly to allow heat exchange with the surroundings.This is further explained below.
What is an isothermal process?Generally, An isothermal process is simply defined as a sort of thermodynamic process where a system's temperature T remains constant.
In conclusion, The equation for the isothermal process is
dT=0
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Fresh water is always (A)_____________________ than salt water so it (B)____________________ the salt water.
(a) less dense (b) rises above
(a) more dense (b) sinks below
1. Ingredients of iodized salt are not limited to salt (sodium chloride) and potassium iodide. Describe the roles (or functions)
of other ingredients of iodized salt. Morton salt has the famous slogan "When It Rains It Pours". Explain how other ingredients
are related to this slogan
Iodized salt contains potassium iodate, potassium iodide, sodium iodate, and sodium iodide.
What is iodized salt?
Salt is a very important ingredient used in cooking across the world. Salt is commonly obtained from sea water. Salt can also be manufactured artificially. Large deposits of salts occur in some parts of the world.
The ingredients that are contained in iodized salt include; potassium iodate, potassium iodide, sodium iodate, and sodium iodide. The species that contain iodine supply the iodine required by the thyroid gland.
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Determine the pH of 1 x 10^-2 the NaOH.
a. 2.0
b. 4.0
c. 8.0
d. 12.0
Answer:
i hope the answer is 12.0
a person uses a force of 27 n to hold a stationary trash can a distance of .5 above the ground. how much work is done on the garbage can?
Answer:
135
Explanation:
Work can be calculated with the equation: Work = Force × Distance
Hope it helps!!!Brainliest pls!!!Calculate the moles of Fe in 4.95x 1022 atoms of Fe .
Answer:
I’m guessing that you mean 4.95x 10^22,
3074.31 moles
Explanation:
(4.95x10^22) grams x (1) mole (6.02x10^23) grams
You cancel you the grams and then you have solved it for moles
a sealed plastic bottle falls into the ocean off australia three years later the bottle is found on a beach in france
Answer:
Wind, ocean currents, waves
Explanation:
The plastic bottle travelled this much distance due to the following factors:
a) Wind
b) Ocean currents
c) Waves
Why do oxygen molecules move more slowly than hydrogen molecules at the same temperature?
Answer:The oxygen molecules are more loaded and heavier which weighs down and the molecules and don't allow the same amount of moving ability as the hydrogen moles have.
Explanation:
True or False: Venus has an average surface temperature
higher than that of Mercury.
The statement Venus has an average surface temperature higher than that of Mercury is true, because of the presence of the high amount of carbon dioxide.
What is surface temperature?Every body has outer surface and inner surface, so if we talk about the temperature of outer surface then we will use the word surface temperature.
As we know that carbon dioxide is a green house gas, it means this gas increase the temperature by trapping the heat content. In the Venus atmosphere high amount of carbon dioxide is present and this atmosphere traps the heat coming from the sun and have a higher surface temperature as compare to Mercury. Because in Mercury atmosphere is absent.
Hence, given statement is true.
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1. Which of the following DOES NOT belong to the group? A Aluminum C Copper B. Plastic D. Iron
Answer:
C
Explanation:
What trends do you see in these calculations? How does the percent increase that occurred from 2000 to 2010 compare with the projected increase from 2020 to 2030
Answer:
The early 2000s had an astronomical rise in wind energy. The largest rise, by far, was between 2000 and 2010, but it also increased by 51% in just three years between 2010 and 2013. Beyond 2020, wind energy is still expected to steadily increase, but not at the astronomical rate of the early 2000s.
Explanation:
Answer:
Wind energy witnessed a meteoric surge in the early 2000s. By far the most significant increase occurred between 2000 and 2010, but it also climbed by 51% in just three years from 2010 and 2013. Wind energy is predicted to continue to grow through 2020, although not at the same astronomical rate as in the early 2000s.
Explanation:
plato (not example answer)
Which conditions produce the largest ocean waves?
Question 3 options:
strong winds that blow for a long time over a great distance
weak winds that blow for short periods of time with a short fetch
strong winds that blow for short periods of time with a short fetch
weak winds that blow for long periods of time with a long fetch
Answer:
Strong winds that blow for a long time over a great distance.
Explanation:
Generally, the biggest and most powerful wind-generated waves are produced by strong storms that blow for a sustained period over a large area. Huge and big waves, or swells, can travel over long distances. The size of the wave depends on wind speed, wind duration, and the area over which the wind is blowing. If The speed of the wind is more, it stays for along time and it covers a larger distance then the waves produced will be very powerful and large.
A sample of nitrogen (N2) has 1.70 moles and occupies 3.8 Liters. What would be the volume of the sample with 2.60 moles?
Answer:
a) What volume will it occupy with 2.60 moles?
V2 = V1 x n2 / n1
V2 = 3.80 x 2.60 / 1.70 = 5.81 L
Answer: V2 = 5.81 L
b) How many moles are in a sample that occupies 1.45 L?
n2 = n1 x V2 / V1 = 1.70 x 1.45 / 3.80 = 0.65 mol
Answer: n2 = 0.65 mol
Explanation:
The volume of the sample that has 2.60 moles and occupies is 5.81 l.
What is Volume?Volume is the space occupied by a three-dimensional object.
The moles of the sample m1 is 1.70
The volume V1 is 3.8 l
The moles m2 is 2.60
V2 = ?
[tex]V2 = V1 \times \dfrac{n_2}{n_1} \\\\\\V2 = 3.80 \times \dfrac{2.60}{1.70} = 5.81 \;l[/tex]
Thus, the volume of the sample that has 2.60 moles and occupies is 5.81 l.
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Kjeldahl's method can be used in the estimation of __________
Answer:
Nitrogen
Explanation:
The Kjeldahl method (the test for routinely determining the crude protein content of foods) determines a food's total nitrogen content, which is then used to estimate the crude protein content using a conversion factor.
I hope this helps you
:)
Answer: im pretty sure its Nitrogen!
hopes this helps ya out! have a day full of killing demons and slaying the dark lord..lol
can some one please help me with this question
Answer:
the atom structure in model A has more atoms and they are all the same type of atom while model B has less atoms and they are different types of atoms.
Explanation:
Question 11 of 25
What does the half-life of a radioisotope correspond to?
A. The length of time for a radioactive material to completely decay to a stable form
B. The length of time it takes for one nucleus to undergo a nuclear reaction
C. The length of time required for half of a sample of radioactive material to decay
D. The length of time a material is stable before the nucleus becomes radioactive b
Answer:
C- THE LENGTH OF TIME REQUIRED FOR HALF OF A SAMPLE OF RADIOACTIVE MATERIAL TO DECAY
Which energy resource has the advantage of producing clean energy that is less harmful to the environment?
Coal being extracted from the ground.
Modern wind mills.
A man filling a car with gasoline.
Answer:
wind energy
Explanation:
Energy resource that has the advantage of producing clean energy that is less harmful to the environment is Modern wind mills.
What is Wind mill?A windmill is a machine structure that helps to convert wind power into rotational energy using wings called sails or blades, by tradition specifically to mill grain, but the term has also been extended to encompass windpumps, wind turbines, and other applications, in some parts of the English-speaking world.
Wind is a form of solar energy caused by a combination of three concurrent events:
The sun unevenly heating the atmosphere
Irregularities of the earth's surface
The rotation of the earth.
Given, options for Energy resource that has the advantage of producing clean energy that is less harmful are-
-Coal being extracted from the ground.
-Modern wind mills.
-A man filling a car with gasoline
Therefore, Energy resource that has the advantage of producing clean energy that is less harmful to the environment is Modern wind mills.
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100.00 mL of the 0.0250 M HNO3 solution by dilution of the 1.00 M HNO3
solution provided in the lab.
Taking into account the definition of dilution, the initial volume of the 1 M HNO₃ solution is 25 mL.
Definition of dilutionWhen it is desired to prepare a less concentrated solution from a more concentrated one, it is called dilution.
Dilution is the process of reducing the concentration of solute in solution, which is accomplished by simply adding more solvent to the solution at the same amount of solute.
In a dilution the amount of solute does not change, but as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.
A dilution is mathematically expressed as:
Ci×Vi = Cf×Vf
where
Ci: initial concentrationVi: initial volumeCf: final concentrationVf: final volumeVolume requiredAssuming that you want to know the volume of HNO₃ required to produce the dilution, you know:
Ci= 1.00 MVi= ?Cf= 0.250 MVf= 100 mLReplacing in the definition of dilution:
1 M× Vi= 0.250 M× 100 mL
Solving:
Vi= (0.250 M× 100 mL)÷ 1 M
Vi= 25 mL
In summary, the initial volume of the 1 M HNO₃ solution is 25 mL.
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Simplify the following expression
Answer:
[tex] \frac{ {a}^{2} }{ {b}^{2} \times c \times {e}^{7} } [/tex]
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