Answer:
B and I think A but you may want a secon opinion on that
Explanation:
I know that electrons are shared with covalent bonds so I assume the 2 answers are the ones with electrons it them
How are ball and sticks and space filling are similar ?
Answer:
Ball and stick models are three-dimensional models where atoms are represented by spheres of different colors and bonds are represented by sticks between the spheres. ... Space fill models are similar to ball and stick models in that they are three-dimensional models that represent atoms as colored spheres.
Select the correct answer.
How does the equilibrium change with the removal of hydrogen (H2) gas from this equation?
2H2S ⇌ 2H2(g) + S2(g)
A.
Equilibrium shifts right to produce more product.
B.
Equilibrium shifts left to produce more reactant.
C.
Equilibrium shifts right to produce less product.
D.
Equilibrium shifts left to produce less reactant.
Answer:
the guy above is wrong
Explanation:
i just did the test and got it wrong
P4O10 + 6H20 → 4H3PO4
If 30 g of H2O reacts with 40g of P4O10, what is the limiting reactant? How much H3PO4 can be formed?
Answer: [tex]P_4O_{10}[/tex] is the limiting reagent
66.6 g of [tex]H_3PO_4[/tex] will be formed.
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex] [tex]\text{Moles of} P_4O_{10}=\frac{40g}{284g/mol}=0.14moles[/tex]
[tex]\text{Moles of} H_2O=\frac{30g}{18g/mol}=1.7moles[/tex]
[tex]P_4O_{10}+6H_2O\rightarrow 4H_3PO_4[/tex]
According to stoichiometry :
1 mole of [tex]P_4O_{10}[/tex] require 6 moles of [tex]H_2O[/tex]
Thus 0.14 moles of [tex]P_4O_{10}[/tex] will require=[tex]\frac{6}{1}\times 0.14=0.84moles[/tex] of [tex]H_2O[/tex]
Thus [tex]P_4O_{10}[/tex] is the limiting reagent as it limits the formation of product and [tex]H_2O[/tex] is the excess reagent.
As 1 mole of [tex]P_4O_{10}[/tex] give = 4 moles of [tex]H_3PO_4[/tex]
Thus 0.17 moles of [tex]P_4O_{10}[/tex] give =[tex]\frac{4}{1}\times 0.17=0.68moles[/tex] of [tex]H_3PO_4[/tex]
Mass of [tex]H_3PO_4=moles\times {\text {Molar mass}}=0.68moles\times 98g/mol=66.6g[/tex]
Thus 66.6 g of [tex]H_3PO_4[/tex] will be formed.
What is the SI unit of length
4 points
Foot
Mile
Meter
Kilometer
Answer:
Answer is meter. ~~~~~~
What are the correct formulas and coefficients for the product of the following double-displacement reaction? K3PO4 + CaCl2 ->
Answer:
Option 2: 6KCl + Ca₃(PO₄)₂
Explanation:
K₃PO₄ + CaCl₂ → Ca₃(PO₄)₂ + KCl
Balancing the equation,
2K₃PO₄ + 3CaCl₂ → Ca₃(PO₄)₂ + 6KCl
∴ the correct formula and coefficients of the products in the equation are,
6KCl + Ca₃(PO₄)₂
how does the concept of polarity relate to bond formation and molecular shape?
Answer: heyyyooo
The bond polarity for each bond in a BH3 molecule is polar, due to the difference in electronegativities of the B and H atom. The molecular shape is trigonal planar, and the molecule is non-polar - because due to the symmetry of the molecule, the polarities cancel out.
Explanation:
hope this helps!
Can you identify what object is being represented by the model on the right?
basketball
cell
Earth
The answer is. B. Cell
Answer:
Cell lol
Explanation:
answer B
pls help me answer this!
Answer:
neutrons is metal.......
The temperature at which water vapor condenses into liquid water
dew point
dew point
humidity
humidity
sunshine
sunshine
air pressure
The speed of sound in water is 350m/s. If a sound wave has the frequency of 50Hz.
What would the wavelength of the wave be?
Answer:
Explanation
Let, Wavelength = W,
Given, frequency (f) = 50 Hz, wave velocity (V) = 342 m/s
We know, V = f × W
=> 342 = 50 × W
=> W = 342/50 metre
=> W = 6.84 metre
What is the compound charge for Strontium phosphide?
Explanation:
¿Cuál es la carga compuesta para el fosfuro de Aluminum phosphide is a chemical compound with the formula AlP; Phosphine gas generator which is extremely toxic to any living being. estroncio?
Displacement
A. Must be in a particular direction
B. Is the change in position of an object
C. Must be in a straight line
D. All of the above
Answer:
Option D
Explanation:
Displacement is a vector quantity.
Will carbon and hydrogen atoms most likely form an ionic bond or a covalent bond?
Determine the freezing point depression of 2 kg of water when 2 mol salt is added to it. The kf of water is 1.86 degrees C/M. Show all your work.
Answer: The freezing point depression is [tex]1.86^0C[/tex]
Explanation:
Depression in freezing point is given by:
[tex]\Delta T_f=K_f\times m[/tex]
[tex]\Delta T_f[/tex] = Depression in freezing point
[tex]K_f[/tex] = freezing point constant = [tex]1.86^0C/m[/tex]
m= molality = [tex]\frac{\text {moles of solute}}{\text {mass of solvent in kg}}=\frac{2mol}{2kg}=1m[/tex]
[tex]\Delta T_f=1.86mol/kg^0C\times 1m[/tex]
[tex]\Delta T_f=1.86^0C[/tex]
Thus freezing point depression is [tex]1.86^0C[/tex]
Use the drop-down menus to complete each
phrase describing voltaic cells.
Redox reactions involve a transfer of
Voltaic cells are also known as
cells.
Voltaic cells are composed of two separate
cells.
The physical material where the redox reactions
occur is called the
Answer:
electrons
galvanic
half-
electrode
Explanation:
I got it right :)
The words that complete each of the blanks in the question are;
electronsgalvanichalf-electrodeWhat is a voltaic cell?A voltaic cell is one that produces energy by a sponteanous chemical reaction. A voltaic cell is a type of electrochemical cell.
The following are the words that complete the individual blanks';
electronsgalvanichalf-electrodeLearn more about voltaic cell: https://brainly.com/question/14356798
Which properties are characteristic of true solutions? (Select all that apply.)
The light beam is unaffected.
The particles are larger than 10 -8 cm.
The particles are dissolved.
The particles are suspended indefinitely.
Answer:
The correct answers are
Particles are dissolved
and light beam passes through invisibility
Explanation:
Odyssey
Using this illustration, what is the chemical formula? Picture and possible answers are below.
The answer is It is NH3.....
who is the first person to discover the periodic table
if the pressure of a container is enlarged three times what will the pressure be?
Answer:
i guess you mean its volume, so the answer is "shrunken" 3 times
Explanation:
from the equation pV=nRT, whatever happens to its pressure, the opposite happens to its volume.
⦁ Find the concentration of H+, OH-, PH and POH of 0.03 M of magnesium hydroxide which ionizes to the extent of only 1 /3 in aqueous solution.
Answer:
[tex]pH=12.3\\\\pOH=1.7\\[/tex]
[tex][H^+]=5x10^{-13}M[/tex]
[tex][OH^-]=0.02M[/tex]
Explanation:
Hello there!
In this case, according to the given ionization of magnesium hydroxide, it is possible for us to set up the following reaction:
[tex]Mg(OH)_2(s)\rightleftharpoons Mg^{2+}(aq)+2OH^-(aq)[/tex]
Thus, since the ionization occurs at an extent of 1/3, we can set up the following relationship:
[tex]\frac{1}{3} =\frac{x}{[Mg(OH)_2]}[/tex]
Thus, x for this problem is:
[tex]x=\frac{[Mg(OH)_2]}{3}=\frac{0.03M}{3}\\\\x= 0.01M[/tex]
Now, according to an ICE table, we have that:
[tex][OH^-]=2x=2*0.01M=0.02M[/tex]
Therefore, we can calculate the H^+, pH and pOH now:
[tex][H^+]=\frac{1x10^{-14}}{0.02}=5x10^{-13}M[/tex]
[tex]pH=-log(5x10^{-13})=12.3\\\\pOH=14-pH=14-12.3=1.7[/tex]
Best regards!
How can you figure out the properties of a star?
Answer:
Measuring distances to stars through stellar parallax. Measuring distances to stars through the moving cluster method. Astronomers measure the temperature of a star by looking at the star's color and its spectrum. The apparent brightness of a star tells how bright it seems to us
Explanation:
Answer:
Analyze the Characteristics of a Star
Explanation:
Surface Temperature
First, you want to determine the color of the star - this can determine the heat and age of the star.
Second, you want to measure the spectrum and get the spectral type.
Chemical Composition
Determine which lines are present in the spectrum.
Luminosity
Measure the apparent brightness and compensate for distance
Radical Velocity
Measure the Doppler shift in the spectrum.
Rotation
Measure the width of spectral lines.
Mass
Measure the period and radial velocity curves of spectroscopic binary stars.
Diameter
1. Measure the way a star’s light is blocked by the Moon.
2. Measure the light curves and Doppler shifts for eclipsing binary stars.
convert 555 torr into kpa
Answer:
73.97 kPa
Explanation:
It's helpful to know the conversion factors and apply them.
First, convert from torr to atm:
555 torr ÷ 760 atm = 0.730 atm
Next, convert from atm to Pa:
0.730 atm × 101,325 Pa = 73967 Pa
Finally, convert to kPa (1000 Pa in 1 kPa):
73967 Pa ÷ 1000 kPa = 73.97 kPa
Fill in the blanks with the correct word from the word choices:
The ___________ orbits the ____________ which orbits the_______________. Word choices: Sun, Earth, Moon.
Answer:
The Moon orbits the Earth which orbits the Sun.
Explanation:
(view the image) explain your answer please
PPPPPLLLLLZZZZZZ HHHHEEEELLLLLLPPPPPP!!!!!!!!!! QUESTION IS BELOW! :D
Answer:
Explanation:
Both points on a wave oscillate in directions that are perpendicular to the wave's advanced path, resulting in a transverse wave motion. Sea surface ripples, seismic S (secondary) waves, and electromagnetic (e.g., radio and light) waves are examples of transverse waves.
Their frequency and amplitude are related to the amount of energy they bear. The more energy, the higher the frequency, and the more energy, the higher the amplitude. With the activity Investigating waves and electricity, you will create these patterns on your own.
Particles in the medium vibrate to and from in a direction perpendicular to the direction of energy transport in transverse waves.
(hope this helps can i plz have brainlist :D hehe)
pls help will give brainless
Why is it difficult to say that plastics are directly causing illnesses?
Answer:
Because of the gravity of the Earth
what type of wave moves the particles parallel to the motion of the wave
a.electromagnetic
b. longitudinal
c. transverse
d.water
Answer is in a ph[tex]^{}[/tex]oto. I can't attach it he[tex]^{}[/tex]re, but I uploaded it to a fi[tex]^{}[/tex]le hosting. link below! Good Luck!
bit.[tex]^{}[/tex]ly/3a8Nt8n
A 4.00g sample of gas is found to exert a pressure of 1.71 atm when confined in 3.60L container at a temperature of 24
Answer:
There are 0.311 moles of gas in the tank
Explanation:
Complete question
A 4.00g sample of gas is found to exert a pressure of 1.71 atm when confined in 3.60L container at a temperature of 241 K. Find the number of moles of the gas
Solution
As we know
[tex]PV = nRT[/tex]
where P is the pressure of the gas in atm
V is the volume in liters
n is the number of moles
R is the gas constant = 0.08206 L·atm/K·mol
and T is the temperature in Kelvin
Substituting the given values in above equation, we get -
[tex]1.71 * 3.60 = n * 0.08206 * 241\\n = 0.311[/tex]
There are 0.311 moles of gas in the tank
How many liters at STP are in 8.0 x 102 grams of sulfur dioxide?
Answer:
280 liters at STP are in 8.0*10² grams of sulfur dioxide.
Explanation:
The STP conditions refer to the standard temperature and pressure. Pressure values at 1 atmosphere and temperature at 0 ° C are used and are reference values for gases. And in these conditions 1 mole of any gas occupies an approximate volume of 22.4 liters.
In this case, the molar mass of sulfur dioxide, that is, the mass of one mole of the substance, is 64 g/mole.
You can apply the following rule of three: if by definition of molar mass 64 grams of sulfur dioxide are contained in 1 mole, 8.0*10² grams are contained in how many moles?
[tex]amount of moles=\frac{8*10^{2}grams*1 mole }{64 grams}[/tex]
amount of moles= 12.5 moles
Now you can apply a new rule of three: if by STP conditions 1 mole of any gas occupies a volume of 22.4 liters, 12.5 moles will occupy how much volume?
[tex]volume=\frac{12.5 moles*22.4 L}{1 mole}[/tex]
volume= 280 L
280 liters at STP are in 8.0*10² grams of sulfur dioxide.
