How can you tell if an ion is a polyatomic ion if all you have is the name?
I can't seem to figure this out! Please help me out!
:)
Answer:
All the elements on the periodic table start with a capital letter and only some of them have a second letter that is lower case. So if you see two capital letters together in a ion then you will know that it is a polyatomic.
Answer: All the elements on the periodic table start with a capital letter and only some of them have a second letter that is lower case. So if you see two capital letters together in a ion then you will know that it is a polyatomic.
Explanation:
What is the density of tellerium tribromide at 743.5 torr and 23.2 °C
Answer: The density of tellerium tribromide is 14.8 g/L
Explanation:
The relation between density and Molar mass:
[tex]d=\frac{PM}{RT}[/tex]
P = pressure of gas = 743.5 torr = 0.98 atm (760torr=1atm)
M = Molar mass = 367 g/mol
R = gas constant =[tex]0.0821Latm/Kmol[/tex]
T = temperature =[tex]23.2^0C=(23.2+273)K=296.2K[/tex]
[tex]n=\frac{PV}{RT}[/tex]
[tex]d=\frac{0.98atm\times 367g/mol}{0.0820 L atm/K mol\times 296.2K}=14.8g/L[/tex]
The density of tellerium tribromide is 14.8 g/L
In each of the following sets of elements, which element would be expected to have the smallest atomic size?
a) Na, K, Rb
b) Mg, P, S
c) N, P, Sb
d) C, O, F
Answer:
d) C,O,F
Explanation:
because if you add up the atomic no.s (which is directly the size of the element)of each set d) is smallest.
Does anyone know how kinetic energy and crater diameter are related??
Answer:
Crater size is related to the mass and velocity of the impacting body. Mass and velocity can be combined to find the kinetic energy of an impactor. ... This fundamental physical relationship allows an estimate of impactor mass to be made from crater diameter.
Explanation:
13. An organic compound is found to contain 77.42% of C, 7.53% of H and
nitrogen. The mass of 1.12L of its vapour at NTP is 4.65g. Determine
the
empirical and molecular formula of the compound.
Answer
7.53% 97% if you divide it you can get the answer
Explanation:
An intravenous solution of mannitol is used as a diuretic to increase the loss of sodium and chloride by a patient. If a patient receives 30.0 mL of 25% (m/v) mannitol solution, how many grams of mannitol were given?
Answer:
Explanation:
25 % ( m / v ) mannitol solution means 25 gram in 100 cc of water
25 gram in 100 mL of water
grams of mannitol in 30 mL = 25 x 30 / 100
= 7.5 grams .
As the water molecules re-freeze, what happens to the salt ions that are mixed in with the water?
Answer:
Explanation:
Since salt is composed of two ions Na+ and Cl- it will attract to the opposite poles of the water and form a ion-dipole bond. This will cause the phenomenon freezing point depression where as the name states it will take a lower tempertature to freeze it. So instead of freezing at 0 degrees c it will freeze at a negative 2 or so on.
The salt ions end up slowing the growth of ice as the water molecules re-freeze.
What is Depression at the freezing point?Freezing point depression can be defined as the decreasing of the freezing point of pure solvents upon the addition of different kinds of solutes.
Depression in the freezing point can be defined as a colligative property that is proportional to the molality of the solution.
As liquid water gets colder and colder, the motions of water molecules become slower and slower. When salt is added to water, the saltwater solution is composed of both water molecules and dissolved salt ions.
As a result, salt ions can easily replace some of the water molecules. Saltwater freezes more slowly than pure water due to many of the water molecules would be "crashing" into the ice's surface in pure water and are replaced by salt ions.
Therefore, the salt water will freeze at a lower temperature than the pure water.
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Your car burns gasoline as you drive up a large mountain. What energy
transformation is the car performing?
O A. Chemical energy to kinetic energy and gravitational potential
energy
B. Kinetic energy to chemical energy and light energy
C. Chemical energy to kinetic energy and nuclear energy
D. Gravitational potential energy to sound energy and nuclear energy
SUBNI
Answer:
chemical energy to kinetic energy
Explanation:
Answer:
A. Chemical energy to kinetic energy and gravitational potential
energy
Explanation:
A solution has a volume if 259 mL and contains 0.70 mol MaCl. What is its molarity
Answer:
2.8 m
Explanation:
:)
How many moles of methane gas are in 44.8 L of CH at STP?
Answer:
2 mol CH 4
Explanation:
43.8 x L
---------------- = 2 mol CH 4
22.4 x L x mol - 1
what is the SI unit that represents the amount of substance?
Answer:
Mole
Explanation:
In solids, amount of substance is given by;
n = mass/molar mass
n will have a unit of mole
However, in liquids, amount of substance is;
n = concentration × volume
Again, n will be in mole
Thus, the SI unit that represents the amount of substance is mole
Calculate the heat absorbed when 68.8 g of ice at -30.0 c is converted to steam at 160 c
Answer: 219 kJ
Explanation:
What are the layers of earth including the lithosphere and the asthenosphere?
Answer:
The lithosphere is the solid, outer part of the Earth. The lithosphere includes the brittle upper portion of the mantle and the crust, the outermost layers of Earth's structure. It is bounded by the atmosphere above and the asthenosphere (another part of the upper mantle) below
Explanation:
They are, in order from the exterior to the interior – the crust, the mantle, the outer core, and the inner core.
What does the root “thermal” mean?
Please Help
I will give you Brainliest
Answer:
If it has to do with heat, it's thermal. ... The Greek word therme, meaning “heat,” is the origin of the adjective thermal. Something that is thermal is hot, retains heat, or has a warming effect.
Explanation:
hope it helps :)
A B C D ............
Answer:
I think gamma, I'm not sure tho
PLZ HELPP!!! WILL GIVE EXTRA POINTS AND BRAINLIEST!!! DUE IN 15 MINUTES!!!
As a scuba diving air tank is filled with air, the air is compressed in the tank to as much as 3000 psi of pressure. When filling the tank, it is observed that the tank becomes warmer.
Which argument BEST explains why this occurs?
A
When air is compressed, it turns solid. A short time later, the air evaporates back into a gas which releases heat.
B
When air is compressed, the molecules line up into a crystalline structure. As the molecules line up, they release energy in the form of heat.
C
When air is put into the tank, it expands rapidly, thereby raising the temperature.
D
Air molecules are free to move and as more air is added to the tank, the molecules move and collide faster which raises the temperature.
Answer:
The gas under pressure subjected to heat can cause the tank to explode. A scuba tank filled to capacity with compressed air at 3000 psi could just as easily go up to 3400-3500 psi if heated
Explanation:
Air molecules are free to move and as more air is added to the tank, the molecules move and collide faster which raises the temperature. Hence option D is correct.
What is pressure?Pressure is defined as the force applied perpendicularly to an object's surface divided by the surface area over which it is applied. The movement of the molecules and the collisions they have with one another and the vessel walls cause the pressure to build up. According to general relativity theory, pressure contributes to the mass-energy cause of gravity by making a gravitational field stronger.
The tank may blow up if the gas within was under pressure and exposed to heat. If heated, the pressure of a scuba tank filled to capacity with compressed air at 3000 psi may readily increase to 3400-3500 psi. Because air molecules are free to move, the temperature in the tank rises as more air is introduced, as the molecules move and collide more quickly.
Thus, air molecules are free to move and as more air is added to the tank, the molecules move and collide faster which raises the temperature. Hence option D is correct.
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PLLZZZZ HELPPPP IT IS A TIME ASSIGNMENT !!!
Answer:
plato is the answer
Explanation:
that what i think it it is
A 7.0 L sample of gas begins at 2.5 atm and 320. K. What is the new pressure if the temperature is changed to 273 K and the volume remains constant at 7.0 L?
Answer:
2.1 atm
Explanation:
We are given the following variables to work with:
Initial pressure (P1): 2.5 atm
Initial temperature (T1): 320 K
Final temperature (T2): 273 K
Constant volume: 7.0 L
We are asked to find the final pressure (P2). Since volume is constant, we want to choose a gas law equation that relates initial pressure and temperature to final pressure and temperature. Gay-Lussac's law does this:
[tex]\frac{P_{1}}{T_1} =\frac{P_{2}}{T_2} \\[/tex]
We can rearrange the law algebraically to solve for [tex]P_{2}[/tex].
[tex]{P_{2}} =\frac{(T_2)(P_{1} )}{T_1} \\[/tex]
Substitute your known variables and solve:
[tex]P_2 = \frac{273K(2.5atm)}{320K} = 2.1 atm[/tex]
Please help ASAP I’ll mark you as brainlister:(((!!!!!!!!
Answer:
c. Gas particles don't interact
Explanation:
Ideal gas particles do not interact with each other.
The gas molecules do not interact with each other except for colliding with each other. Gases expand to completely fill a container; they would not if they were attracted to each other. That being said, they obviously still do, as a result of Dalton's Law.
Based on the data what can be inferred about the biotic factors of this religion
Answer:
I would say the answer is D
Explanation:
state the Constituents of the following alloys:magnalium and bronze
Need help with this please help ASAP
Answer:
The correct answer would be -
17. 50% chances of round offspring
18. 25% chances two copies of dominant allele in the genotype of offspring
Explanation:
17. In this question it is stated that the Spongebob is heterozygous and has a square body which means the square body is dominant over the round that is present in sponge Susie that means she has two copies of the recessive allele.
S for square trait and s for a round trait then
S s
s Ss ss
s Ss ss
Thus, the correct answer is 50 percent as there are only two copies of ss.
18. in this question Patric and Patti both have heterozygous for the pink (P) body-color dominant over yellow (p). The chances for the true-breeding dominant genotype would be -
P p
P PP Pp
p Pp pp
There is only one out of four rue-breeding dominant offspring will be produced.
How many particles are in 1 mole of CO2?
pls help what’s the answer?
Is farting an example of an exothermic reaction?
*for real though I have never heard of a cold fart
Answer:
i would assume i mean who has cold farts
Explanation:
Yes, farting is an example of an exothermic reaction.
What is an exothermic reaction?A reaction that is chemical in nature and is characterized by the release of energy in the form of heat or light is called an exothermic reaction.
Farting is a normal part of digestion that reflects the activity of the bacteria in your gut.
Yes, farting is an example of an exothermic reaction.
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how many electrons will be in the valence of non- H atoms when they make covalent bonds?
Answer:
Please one time click here
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5.
Primary succession occurs when pioneer species move into an area that has no plants. Which organisms are common pioneer species?
A Conifer trees and tall grasses with roots that loosen the soil
B. O Mosses and lichens that can grow on rocky surfaces
c. Grasses and weeds that arrive as seeds carried by the wind and then germinate in rich soil
D. O Vines and shrubs that help prevent the erosion of shallow soil
No
Answer:
C
Explanation:
Primary succession occurs when pioneer species move into an area that has no plants. This happens because of Mosses and lichens that can grow on rocky surfaces and the correct option is option B.
What is Primary Succession?Primary succession refers to the establishment of a community in an uninhabited area such as rocks.
It is a type of ecological succession (the evolution of a biological community’s ecological structure) in which plants and animals first colonize a barren, lifeless habitat.
Species that arrive first in the newly created environment are called pioneer species, and through their interactions they build a simple initial biological community.
Therefore, Primary succession occurs when pioneer species move into an area that has no plants. This happens because of Mosses and lichens that can grow on rocky surfaces and the correct option is option B.
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In the Haber reaction shown below, _______?is the
limiting reactant if equal moles of each reactant are used.
3H2 + N2 -> 2NH3
Answer: hydrogen
Explanation:
Photosynthesis is an example of an __
process.
Which element would have a larger
atomic radius?
Magnesium (Mg)
Chlorine (CT)