Answer:
a delta
Explanation:
he place where a river enters a lake, larger river, or the ocean is called its mouth. River mouths are places of much activity. As a river flows, it picks up sediment from the river bed, eroding banks, and debris on the water. ... When large amounts of alluvium are deposited at the mouth of a river, a delta is formed.
The outer energy level of a noble gas is
Select one:
a. empty.
b. filled.
c. half-filled.
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
which represents a linear graph?
Answer:
The 2nd one
Explanation:
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
calculate the total bond energy for a water molecule using the bond energy chart provided.
Answer:
21 periodic tables equals alot of stuff
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
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.
*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. √
----------------------------------------------------------------------------------------------------------------
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
A particle with no charge is a_____?
Answer:
a particle with no charge is a neutron.
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
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.
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
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
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 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!
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.
Give an example of a diatomic molecule found in Earth's atmosphere.
Answer:
oxygen is an example of a diatomic molecule found in earth's atmosphere!
Explanation:
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:
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.
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.
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!
Multiple choice
I genuinely have no idea-- but I don't think it's the first one or the last.
I think it may be the third one but I'm not too sure.
Answer:
The correct option is;
By first reversing Reaction 2 and then adding the enthalpy of Reaction 1 and the enthalpy of reaction 2
Explanation:
The given reactions are;
1) C₂H₂ (g) + 2H₂ (g) → C₂H₆ (g) [tex]{}[/tex] ΔH = -75 kcal
2) C₂H₄ (g) + H₂ (g) → C₂H₆ (g) [tex]{}[/tex] ΔH = -33 kcal
3) C₂H₂ (g) + H₂ (g) → C₂H₄ (g) [tex]{}[/tex] ΔH = ?
By reversing reaction (2) and subtracting the reactants from the products we then have followed by adding the enthalpy of reaction 1 to the value of the enthalpy of the (reversed) reaction 2, we have;
C₂H₂ (g) + 2H₂ (g) → C₂H₆ (g) [tex]{}[/tex] ΔH = -75 kcal
C₂H₆ (g) → C₂H₄ (g) + H₂ (g) [tex]{}[/tex] ΔH = 33kcal
Adding, and cancelling out the italicized terms which are repeated in the product and reactants, we get
C₂H₂ (g) + H₂ (g) → C₂H₄ (g) [tex]{}[/tex] ΔH = -75 kcal + 33 kcal = -42 kcal
Therefore, the correct option is "by first reversing Reaction 2 and then adding the enthalpy of Reaction 1 and the enthalpy of reaction 2"
What is the likely origin of the two moons orbiting Mars?
Answer:
....? What-
Explanation:
What is the ionic formula of the compound formed by Co3+ and the phosphorus ion? What is the name of the compound formed based on the ionic compound formula?
Answer: The ionic formula of compound is [tex]CoP[/tex] and the name is cobalt phosphide.
Explanation:
For formation of a neutral ionic compound, the charges on cation and anion must be balanced. The cation is formed by loss of electrons by metals and anions are formed by gain of electrons by non metals.
Here element Co is having an oxidation state of +3 called as [tex]Co^{3+}[/tex] cation and phosphprous forms [tex]P^{3-}[/tex] anion with oxidation state of -3. Thus they combine and their oxidation states are exchanged and written in simplest whole number ratios to give neutral [tex]CoP[/tex]
The nomenclature of ionic compounds is given by:
1. Positive is written first followed by the oxidation state of metal in roman numerals in square brackets.
2. The negative ion is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.
Thus the name of [tex]CoP[/tex] is cobalt phosphide.
Answer: A
Explanation: TOOK THE QUIZ !)) 200 YEARS AGOO
(HELP PLEASE )A solid is being cooled down.
What is happening to the particles of the solid?
Answer: the vibration becomes faster
Explanation:
0.12g of rock salt was dissolved in water and titrated with 0.1moldm^-3 silver nitrate until the first permanent brown precipitate of silver chromate is seen. 19.70 cm^3 was required to titrate all the chloride ion. how many moles of chloride ion were titrated? what mass of sodium chloride was titrated? what was the % purity of the rock salt in terms of sodium chloride?
moles Cl⁻ : 0.00197
mass NaCl : 0.115
% purity : 95.83%
Further explanationMolarity shows the number of moles of solute in every 1 liter of solute or mmol in each ml of solution
[tex]\large \boxed {\bold {M ~ = ~ \dfrac {n} {V}}}[/tex]
Where
M = Molarity
n = Number of moles of solute
V = Volume of solution
So to find the number of moles can be expressed as
n = V x M
mol Cl⁻Reaction
AgNO₃ + NaCl ⇒ AgCl + NaNO₃
Molarity(concentration) of AgNO₃ = 0.1 mol/dm³(L) = 0.1 M
Volume=V of AgNO₃ = 19.7 ml(cm³)
so mol of AgNO₃ :
[tex]\tt mol=M\times V\\\\mol=0.1~mol/L\times 0.0197~L\\\\mol=0.00197[/tex].
From the equation, mol ratio AgNO₃ : NaCl = 1 ; 1, so mol NaCl= mol AgNO₃= 0.00197
NaCl⇒Na⁺+Cl⁻
mol Cl⁻ : mol NaCl = 1 : 1, mol Cl⁻ = 0.00197
mass NaCl (MW=58.5 g/mol) :
[tex]\tt mass=mol\times MW\\\\mass= 0.00197\times 58.5=0.115~g[/tex]
% purity :[tex]\tt \%purity=\dfrac{mass~NaCl}{mass~rock}\times 100\%\\\\\%purity=\dfrac{0.115}{0.12}\times 100\%=95.83\%[/tex]
10 points
3. Which of the following is the characteristic that all organisms have in
common?*
O A. All organisms are made up of cells.
O B. All organisms are multicellular.
C. All organisms can make their own food.
O D. All organisms have cells with a nucleus.
Answer:
A all organisms are made of 1 or more cells
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.
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.