Answer:
they have two valence electrons
Explanation:
They readily give up their two valence electrons to achieve a full outer energy level, which is the most stable arrangement of electrons
Examine the molecules. H2O HCl HF What do all three molecules have in common?
All of the molecules are nonpolar compounds.
All of the molecules contain an alkaline earth metal.
All of the molecules are polar covalent compounds.
All of the molecules are diatomic.
Answer:
polar
Explanation:
because interaction between them is hydrogen bonds
molar mass for NiI2
Please help
Answer:
312.50234
...............
Molar mass of NiI2 is 312.50234 ± 0.00046 g/mol
Answer:
312.502 g/mol. GOOD LESSONS♡
Which of the following options correctly ranks solid iodine, liquid bromine, and chlorine gas in order of increasing intermolecular force strength?
A solid iodine
B. solid iodine < chlorine gas
C. chlorine gas
o
D. liquid bromine < solid iodine
Answer:
solid iodine chlorine gas
The correct order for ranking solid iodine, liquid bromine, and chlorine gas in order of increasing intermolecular force strength is; chlorine gas < liquid bromine < solid iodine.
Intermolecular forces are forces that hold substances together in a particular state of matter. Intermolecular forces increase in the order; gases < liquids < solids. Solids have the highest magnitude of intermolecular interaction between particles.
Bearing this in mind, the correct order for ranking solid iodine, liquid bromine, and chlorine gas in order of increasing intermolecular force strength is; chlorine gas < liquid bromine < solid iodine.
Learn more: https://brainly.com/question/9328418
Predict the products of the following reaction: Zn(ClO₃)₂ (aq) + K₃PO₄ (aq)
The products : Zn₃(PO₄)₂ (s) + KClO₃ (aq)
Further explanationGiven
reaction: Zn(ClO₃)₂ (aq) + K₃PO₄ (aq)
Required
The products
Solution
Double-Replacement reactions : an ion exchange between two ion compounds in the reactant to form two new ion compounds in the product
General formula :
AB + CD ⇒ AD + CB
One of the characteristics of the double replacement reaction is the presence of precipitated compounds
Zn(ClO₃)₂ (aq) + K₃PO₄ (aq) ⇒ Zn₃(PO₄)₂ (s) + KClO₃ (aq)
Zn₃(PO₄)₂ (s)⇒ precipitated compounds, so that this reaction can occur
1 mole is = how many grams of copper?
Answer:
63.55 g
Explanation:
The relation between molecular (formula) mass and molar mass Page 4 4 • To obtain one mole of copper atoms (6.02 x 1023 atoms), weigh out 63.55 g copper. The molar mass (M) of a substance is the mass of one mole of entities (atoms, molecules, or formula units) of the substance.
Answer:
63.55 Grams.
Explanation:
The outer energy level of a noble gas is
Select one:
a. empty.
b. filled.
c. half-filled.
(HELP PLEASE )A solid is being cooled down.
What is happening to the particles of the solid?
Answer: the vibration becomes faster
Explanation:
What is the first answer ?
Answer:
d....
Explanation:
yes its d
sorry
How many moles of sodium hydroxide are required to react completely with 23.1 moles of sulfuric acid?
H2SO4(aq) + 2NaOH(aq) = 2H2O(l) + Na2SO4(aq)
Select one:
a) 46.2 moles NaOH
b) 11.6 moles NaOH
c)5.78 moles NaOH
d)23.1 moles NaOH
Explanation:
Mole ratio of H2SO4 to NaOH = 1 : 2.
Moles of NaOH
= Moles of H2SO4 * (2/1)
= 23.1mol * (2/1)
= 46.2mol. (A)
What would increase the amount of your carbon dioxide output?
Answer:
Consuming electricity: Burning fossil fuels emits CO2, with coal releasing twice as much of the gas as petroleum. Worldwide, fossil fuels generate 85 percent of electricity. The number of coal-burning plants will increase as China and India continue to industrialize.
MULTIPLE CHOICE
This equation represents an unbalanced chemical reaction:
Nal + Cl2 → NaCl + 12
When the equation is balanced, which coefficient should be placed before NaCl?
Answer:
C 2
Explanation:
2Nal + Cl2 → 2NaCl + I2
This is balanced equation
A 1.25 g sample of aluminum is reacted with 3.28 g of copper (II) sulfate. What is the limiting reactant?
2Al(s) + 3CuSO4(aq) = Al2(SO4)3(aq) + 3Cu(s)
Select one:
a)Copper
b)Aluminum sulfate
c)Aluminum
d)Copper (II) sulfate
Answer:
d. Copper (II) sulfate
Explanation:
Given data:
Mass of Al = 1.25 g
Mass of CuSO₄ = 3.28 g
What is limiting reactant = ?
Solution:
Chemical equation:
2Al + 3CuSO₄ → Al₂ (SO₄)₃ + 3Cu
Number of moles of Al:
Number of moles = mass/molar mass
Number of moles = 1.25 g/ 27 g/mol
Number of moles = 0.05 mol
Number of moles of CuSO₄:
Number of moles = mass/molar mass
Number of moles = 3.28 g/ 159.6 g/mol
Number of moles = 0.02 mol
now we will compare the moles of reactant with product.
Al : Al₂ (SO₄)₃
2 : 1
0.05 : 1/2×0.05=0.025 mol
Al : Cu
2 : 3
0.05 : 3/2×0.05 = 0.075 mol
CuSO₄ : Al₂ (SO₄)₃
3 : 1
0.02 : 1/3×0.02=0.007 mol
CuSO₄ : Cu
3 : 3
0.02 : 0.02
Less number of moles of reactants are produced by CuSO₄ thus it will act as limiting reactant.
*ANSWERED*
Which statements describe the Rutherford atomic model? Check all that apply.
It defined the nucleus for the first time.
Electrons exist only in energy levels.
Electrons orbit the nucleus.
Electrons exist in any location in the atom.
THE ANSWER IS A & D!!!
Answer:
-A.
-D.
Explanation:
-It defined the nucleus for the first time. √
-Electrons exist only in energy levels. ×
-Electrons orbit the nucleus. ×
-Electrons exist in any location in the atom. √
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Physicist Ernest Rutherford envisioned the atom as a miniature solar system, with electrons orbiting around a massive nucleus, and as mostly empty space, with the nucleus occupying only a very small part of the atom. The Rutherford model was devised by the New Zealand-born physicist Ernest Rutherford to describe an atom. Rutherford directed the Geiger–Marsden experiment in 1909, which suggested, upon Rutherford's 1911 analysis, that J. J. Thomson's plum pudding model of the atom was incorrect.
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Brainliest?
:D
Ty!
Answer:
A and D
Explanation:
I am doing this so other guy gets brainliest. He earned it
calculate the total bond energy for a water molecule using the bond energy chart provided.
Answer:
21 periodic tables equals alot of stuff
Explanation:
can someone help me please
Answer:
From left box to right box: Footwall, fault plane, hanging wall
Explanation:
A foot wall is the one holding us the hanging wall so the highest piece. Think of rock climbing. You put your feet on the wall or rocks to push yourself up. The foot wall is the rocks for the hanging wall.
The hanging wall is the part that's "hanging" from the other wall. So the lowest one. Think of it as the part that's hanging.
A fault plane is where the place where the fault happens which would be where there is the difference in elevations originate from. Think of it like the crack in the middle.
Don't be afraid to reach out if you need further help, I hope this helps!
All matter is involved in motion of some kind. True or false
Answer:
true
Explanation: all matter down to the molecular or even atomic level has a constant vibration and movement. The only time that any matter could stop moving would be at absolute zero.
What is the density of a block of wood that has a mass of 11 g and a volume of 27 cm3?
Answer:0.407
Explanation:
calculate the number of atom of each element :
Answer:
P = 6
O = 15
Explanation:
for the phosphorus you multiply the mole number which number of atom present, same thing applicable to the oxygen atom
Of the following substances, ________ has the highest boiling point. Of the following substances, ________ has the highest boiling point. Kr Cl2 BH3 CH4 PCl3
Answer:
Of the following substances, PCl₃ has the highest boiling point
Explanation:
The given substances and their boiling point from online resources are;
Krypton, Kr, boiling point = -153.4°C
Chlorine gas, Cl₂, boiling point = -34.6°C
Borane, BH₃, (transient compound), boiling point of the dimer it forms B₂H₆ = -164.85°C
Methane, CH₄, boiling point = -161.6°C
Phosphorus trichloride, PCl₃, boiling point = 76.1°C
Therefore, given that PCl₃ is a volatile liquid at room temperature, while the other substances are gases and that PCl₃ has the highest boiling point of all the substances of 76.1°C, the substance with the highest boiling point is PCl₃.
Si dos elementos tienen igual valor del número cuántico n y diferente l, ml y ms entonces deben estar en : El mismo orbital, pero diferente nivel y sub nivel. Diferente nivel , subnivel y orbital El mismo nivel, sub nivel y orbital. El mismo nivel, pero diferente subnivel y orbital El mismo sub nivel y orbital pero diferente nivel.
Answer:
El mismo nivel, pero diferente subnivel y orbital
Explanation:
En un átomo, el número cuántico principal n muestra el nivel de energía del electrón.
Si dos electrones tienen el mismo valor del número cuántico principal n, simplemente significa que están en el mismo nivel de energía.
Sin embargo, cuando los números cuánticos l y ml difieren, los electrones deben estar en diferentes subniveles y orbitales.
what is 4.9 + 3.822 is sig fig?
Answer: 4.9 + 3.822 = 8.7
Explanation: Hope this helps
Answer: 8.722
Explanation:
Which of the following elements has the highest electronegativity?
O A. Rubidium (RD)
B. Calcium (Ca)
C. Silicon (Si)
O D. Nitrogen (N)
Answer:
I got fluorine for my guess
Explanation:
Answer:
It's D Nitrogen with 3.04
which represents a linear graph?
Answer:
The 2nd one
Explanation:
A soft weak like layer the upper part of the mantle where lithosperic plates and more
Answer:
asthenosphere
Explanation:
What is being described in the question above, that is a soft weak like layer the upper part of the mantle where lithospheric plates is known as the asthenosphere. In the study of earth's mantle, the asthenosphere is one of the region that can be overlooked as it constitutes part of the upper mantle with its counterpart; lithosphere.
Some of the properties of asthenosphere is the fact it has high temperature, it is viscous and it is ductile. It is also characterized by its density.
What do you mean by ductility?
Ductility is the ability of a material to be remoulded to a force applied to it without breaking.
e.g copper electronic wires
Explain the van der Waal's
pressure and volume correction in an ideal gas equation
Answer:
The pressure correction in the ideal gas equation accounts for the intermolecular attractive forces between gas molecules. Vanderwaal constant 'a' measures the magnitude of intermolecular attractive forces between the particles.
Thevolume correction to the total volume per mole occupied by gas molecules, it closely corresponds to the volume per mole of the liquid state, whose molecules are closely layered. Vanderwaal constant 'b' measures the volume excluded by a mole of particles.
Vander waals equation followed by real gas is:
[tex](P+\frac{an^2}{V^2})(V-nb)=nRT[/tex]
where,
P = pressure of gas
V = volume of gas
n = number of moles of gas
R = gas constant
T = temperature of gas
A particle with no charge is a_____?
Answer:
a particle with no charge is a neutron.
PLEASE HELP ME DUDE MY CLASS ENDS IN LIKE HALF A DAY
Answer:
c.all atoms have the same arrangement for electrons
Answer:
C because the number of protons and neutrons add up to make the number of electrons.
How is the filter bed cleaned
Answer:
The filter bed is cleaned by occasional backwashing ;-; im sorry if this isn't a great answer but I tried
what is rtp in chemistry?
RTP stands for Room Temperature and Pressure.
One mole of any gas has a volume of 24 dm 3 or 24,000 cm 3 at rtp (room temperature and pressure). This volume is called the molar volume of a gas. This equation shows how the volume of gas in dm 3 at rtp is related to the number of moles: volume of gas at rtp = number of moles × 24.
Hope this helped!