according to the periodic table, which element is a noble gas?
Answer:
Argon, neon, krypton, Xenon, Radon and Organesson
2. What is the shape of the 3p atomic orbital?
PLEASE HELPP!
True or False: Hydrogen is an alkali metal.
Answer: falso
Explanation:
Phosphorus-32 has a half-life of 14.3 years. How many grams remain after 57.2 years if you have
4.0 g of the isotope at the beginning?
Answer:
29.3 years to live
Explanation:
Phosephurus loses 32 years at his life -32
then he gains 14.3 years back and another 57.2 years
totaling 29.3 years he will live
What law states that matter cannot be created nor
destroyed, even in a chemical reaction?
A
Newton's Laws of Motion
B
Law of Conservation of Mass
Answer:
I believe it would be Law of conservation of mass (sorry if I'm incorrect)
the energy level model of the atom was proposed by
Answer:
Niels Bohr
Explanation:
What resources are sometimes shared by squirrels and certain birds answer quick I need to get to the bus stop!!
Answer:
I know someone that has the answer
Explanation:
I know someone that has the answer
what molecule would be most directly affected if 2 co2 molecules could be fixed at the same time?
the mixing of which pair of reactants will result in a precipitation reaction?
Answer:
NH4Br and NH4I are both soluble in water, and they don't react with each other. So this pair will not form precipitation.
NaClO4 and (NH4)2S are both soluble in water. While in water, they dissociate into Na+, ClO4-, NH4+ and S2- ions, which don't react with each other. So this pair will not form precipitation.
Ni(NO3)2 and Na2CO3 are both soluble in water. When the 2 solutions combine, NiCO3 forms. NiCO3 is not soluble in water, so it will precipitate out from the solution. This pair will result in precipitation.
K2SO4 and Cu(NO3)2 are both soluble in water. While in water, they dissociate into K+, SO42-, Cu2+ and NO3- ions, which don't react with each other. So this pair will not form precipitation.
Explanation:
Hope this helps...
"type one to two paragraphs describing the changes in potential and kinetic energy of the cart.
Be sure to discuss how the potential and kinetic energy of the cart changes at each of the four
positions along the track, and explain why these changes occur."
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The cart starts out in position A with high potential energy, low kinetic energy, and some thermal energy. As the cart progresses into position B, the kinetic energy begins to increase and the potential energy begins to decrease; as the thermal energy increases as thermal energy from the track is transferred to the cart through friction. Once the cart reaches position C, it has high kinetic energy, low potential energy, and some thermal energy. At position D, the cart has high potential energy, low kinetic energy, and some thermal energy. The potential energy throughout is correlated to gravity, the kinetic energy is correlated to momentum, and the thermal energy is correlated to friction. The potential energy is at its maximum during position A, and its minimum at position C; the kinetic energy is at its maximum during position C, and its minimum at position A; the thermal energy is at its maximum during position B, and its minimum at position A
Which is not an example of a compound?
Ingnore the top PLEASE HELPP
Answer:
The 3rd answer or NCI is the correct answer
Explanation:
Hope this helps:)
Answer:
the 1st one
Explanation:
Cho 1,12 lít NH3 điều kiện tiêu chuẩn tác dụng với 16 g CuO nung nóng sau phản ứng còn một chất rắn x còn lại a tính khối lượng rắn x thu được b tính thể tích dung dịch HCl ph = 0,7 đủ để tác dụng với x
Answer:
11
Explanation:
because jrjrbd kiubsk luvs jd8uga
1.5 of potassium ioxcide in 150cm^3 of solution
Answer:
Explanation:
I'm not sure what is being asked, not the units of "1.5." I don't know of potassium "ioxicide." Was "dioxide" intended?
I'll assume the question is "What is the concentration, in Molar, of 1.5g of potassium dioxide in 150cm^3 of water (150cm^3 is 150 ml).
The molar mass of K2O, potassium dioxide, is 94.2 g/mole. 1.5g is (1.5g/94.2 g/mole) or 0.0159 moles of K2O. The definition of Molar is moles/liter. So take the moles of K2O and divide by the liters, which is 0.150L in this case.
(0.0159 moles K2)/0.150 L = 0.106 M K2O
true or false: Halogens are very stable because they have a full outer shell of 8
Answer:
True
Explanation:
Halogens are very stable because they have a full outer shell of 8
true or false?
Brainiest plz and hope this answer helped let me know if you need any more help I am glad to help!
It's true!
12. A beginner's bowling ball has a mass of 4.9 kg and a volume of 5.4 liters. Will it float in water,
which has a density of 1.0 g/mL?
Taking into account the definition of density and Archimedes' principle, the beginner bowling ball will float on the water.
But first it is neccesary to know that density is a quantity referred to the amount of mass in a certain volume of a substance or a solid object.
In other words, the density is the relationship between the weight (mass) of a substance and the volume that the same substance occupies.
The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:
[tex]density=\frac{mass}{volume}[/tex]
In this case, a beginner's bowling ball has a mass of 4.9 kg and a volume of 5.4 liters. This is:
mass= 4.9 kg= 4900 g (being 1 kg= 1000 kg)volume= 5.4 L= 5400 mL (being 1L=1000 mL)Replacing in the definition of density:
[tex]density=\frac{4900 g}{5400 mL}[/tex]
Solving:
density=0.907 [tex]\frac{g}{mL}[/tex]
On the other hand, Archimedes' principle says that an object immersed in a liquid experiences an upward vertical force equal to the weight of the volume of the dislodged liquid.
The sinking or floating of an object is determined by its density with respect to that of the liquid in which it is submerged.
Considering water as the liquid where the object is submerged in this case, an object with a higher density than water will sink. In contrast, an object with a lower density than water will float.
In this case, considering that water has a density of 1 [tex]\frac{g}{mL}[/tex], the bowling ball for beginners has a lower density. This indicates that, having a lower density than water, the object will float.
In summary, the beginner bowling ball will float on the water.
Learn more about density:
brainly.com/question/952755?referrer=searchResults brainly.com/question/1462554?referrer=searchResults
Give reason:
Why Phosphorous is stored under water.
Answer:
Phosphorus ( white) us highly reactive and ignites at about 30°C when exposed to moist air
PLS HELP Make this a brief short summary.....
Answer:
Democritus was the first person to hypothesize the existence of atoms (the idea that you can't keep dividing matter forever). Scientists did eventually prove the existence of atoms. however, they aren't completley how he imagined them.
during June , earth is 152,000,000km from the sun. how far is earth from the sun in miles
Answer:
94448421.2201
Explanation:
multiply the value in kilometers by the conversion factor '0.62137119223684'.
So, 152000 kilometers = 152000 × 0.62137119223684 = 94448.42122 miles.
If an atom has four electrons in the outer energy level, how will it form a bond?
A. It will gain electrons.
B. It will share electrons.
C. It will not form a bond.
D. It will lose electrons.
Answer:
b . Thunder formed between carbon atoms and other elements because carbon has four valence electrons it made take for Coral Bell and funds to obtain a complete outer energy level.
Explain what a product is
Answer:
an article or substance that is manufactured or refined for sale. or a thing or person that is the result of an action or process.
Explanation:
Answer:
product is the item offered for sale. A product can be a service or an item. It can be physical or in virtual or cyber form. Every product is made at a cost and each is sold at a price. The price that can be charged depends on the market, the quality, the marketing and the segment that is targeted.
Can matter be created or
destroyed?
Yes or No
Answer:
No
Explanation:
The same amount of matter is present before and after chemical and physical changes. Matter cannot be created or destroyed
Answer:
none is created or destroyed. This concept is called the Law of Conservation of Mass.
For This activity, you will create a diagram for each of the solutions you tested showing the dissolved solutes. Make sure to label the correct charges on the ions and circle the solutes that do not have charge. include a brief explanation under each diagram of its conductivity. Finally, write a brief explanation of what would happen to the conductivity of the ionic solutions if you were to mix in a covalant compound such as a sugar or one of the covalent solutions. Where have you seen a similar experiment and results?
Ionic solutions are known to be electrolytes due to the presence of free ions. Covalent solutions are non-electrolytes hence the decrease the conductivity of the ionic solutions.
Electrolytes are solutions that conduct electricity. The charge carriers in solution are ions. These ions are mobile. Covalent substances are molecular in nature. They do not contain ions hence they do not give ions when dissolved in water.
The conductivity of ionic solutions owes to the presence of ions in solution. The higher the concentration of ions in solution, the greater the conductivity of the solution. When covalent substances are mixed with ionic solutions, the concentration of ions decreases and the conductivity of the solution decreases.
Learn more: https://brainly.com/question/10079361
For the following element, predict the most likely oxidation number (charge) for its corresponding ion.
Aluminum
A. Al+3
B. Al+1
C. Al-3
D. Al-1
The most likely ion of Aluminum is Al³⁺ (group 3A) since losing three electrons is the most energetically favorable way for it to follow the octet rule.
Because the charge on ions is equivalent to their oxidation state, then +3 is the most likely oxidation number of Aluminum.
Anyone help me answer this please anyone
Answer:
[tex]\huge\boxed{\sf Q = 5880\ Joules}[/tex]
Explanation:
Given:
m = mass = 40 g = 0.04 kg
c = specific heat constant of water = 4200 J/Kg°C
ΔT = change in temperature = T2-T1 = 60 °C - 25 °C = 35°C
Required:
Q = change in heat energy = ?
Formula:
Q = mcΔT
Solution:
Q = (0.04)(4200)(35)
Q = 5880 Joules
[tex]\rule[225]{225}{2}[/tex]
tại sao lại có cầu vồng
Answer:
because of the reflection that the Sun makes on the water after it rained.
bởi vì sự phản chiếu mà mặt trời tạo ra trên mặt nước sau khi trời mưa
Explanation:
Can u please help me on this question, first person to answer will be marked brainlist
Put the words in order like 1 something 2 something 3 something or whatever u think is the best way to answer this question for me
Answer:
1.이산화탄소
2.낮은
3.높은
4.쓰레기
5.빠른
6.산소
7입자
Explanation:
내가 틀렸다면 나를 수정하는 데 도움이되기를 바랍니다.
WWE Roman reigns vs john cena summerslam 2021 who won?
Answer:Reigns then hit two Superman punches and a spear to score the pinfall. Result: Roman Reigns defeated John Cena via pinfall to retain the title.
Explanation:
Answer: Roman Reigns I hope this helps
Explanation:
Eleven matches were contested at the event, including one match on the Kickoff pre-show. In the main event, Roman Reigns defeated John Cena to retain SmackDown's Universal Championship.
Someone pls help me I will make you brain
Answer:
I think it's true
what is the molar mass of dimethylglyoxime, c4h8n2o2?
Explanation:
The molar mass of a compound can be calculated by finding the molar of the individual atoms that combine to make the compound.
Molar mass of compound =
∑ (molar mass of element × number of atoms of the element)
∴ Molar mass of dimethylglyoxime
= 4C + 8H + 2N + 2O
= [(4 × 12.011) + (8 × 1.0080) + (2 × 14.007) + (2 × 15.999)] g/mol
= 116.12 g/mol
∴ the molar mass of dimethylglyoxime = 116.12 g/molwhat could cause a population of deer to decrease?
Explanation:
more predators, less deers. also starvation, and diseases.