Answer:
The answer is A.
Explanation:
Physical properties include: appearance, texture, color, odor, melting point, boiling point, density, solubility, polarity, and many others.
Acceleration of an object
Answer:
velocity
Explanation:
The definition of acceleration is: Acceleration is a vector quantity that is defined as the rate at which an object changes its velocity. An object is accelerating if it is changing its velocity.
Convert the following sentence into an equation and balance it.
When heated, solid iron(1) carbonate breaks down into solid iron(1) oxide and carbon dioxide gas.
What is the concentration, mass/volume percent (m/v), of a solution prepared from 50.0 g NaCl and 2500 mL of water?
answer: 25.0%
Explanation:
thats the answer
Can you use volume alone to predict whether an object will sink or float? Explain.
Answer:
The answer is: No
Explanation:
Density determines if an object will sink or float, not volume.
Volume is the quantity of three-dimensional space enclosed by a closed surface.
compare and contrast the alkali metals and the alkaline earth metals
Answer: Answer IS in the explanation.
Explanation: Alkaline Earth metals are group 2 of the periodic tables, whereas alkali metals are in group 2. The major difference between alkaline and Alkali is that Alkaline earth metals have two valence electrons whereas alkali metals have one valence electron.
Answer:
Alkali
Alkaline Earth Metals
Soft metals
Hard metals
One valence electron
Two valence electrons
Form 1+cations
Form 2+cations
More reactive
Less reactive
low melting and boiling point
High(er) melting and boiling point
Group 1
Group 2
Used for group one elements on P.Table
Used for group two elements on P.Table
Lower ionizing energy
High(er) ionizing energy
Explanation: here are the differences
What is the molarity of I-(aq) in a solution that contains 34 g of SrI2 (molar mass 341 g) in 1.0 L of the solution? Show Work!
1. 0.068 M
2. 0.034 M
3. 0.20 M
4. 0.10 M
Answer: 0.20 M
Explanation:
The molarity of I-(aq) in a solution that contains 34 g of SrI2 (molar mass 341 g) in 1.0 L of the solution is 0.20 M.
What is molarity?Molarity is also known as molar concentration and it is specific measure of the chemical species's concentration in a specific solute which is present in the solution in per unit volume. The very much used unit of molarity is total number of moles present in every liter, which is represented by mol/L .
Molarity is represented by M or mol/L and one molar solution means 1 M of solution. Molarity has several importance in the field of chemistry for a very important reason as we know that in a mixture molarity is the measurement of the concentration of the particular mixture.
Molarity is calculated as moles of solute divided by liters of solution is equal to molarity or molar concentration. The very much used unit of molarity is total number of moles present in every liter, which is represented by mol/L .
Therefore, The molarity of I-(aq) in a solution that contains 34 g of SrI2 (molar mass 341 g) in 1.0 L of the solution is 0.20 M.
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If D+2 would react with E!, what do you predict to be the formula?
A) OD 2E
B) DE
C) OD2E2
D) O DE 2
Answer:
I think the answers D. Hope this helps you.
Explanation:
Based on the passage, which of the following best describes the greenhouse effect
Answer:
The process by which radiant heat from the atmosphere heats up the Earth’s surface, making it warm enough for humans.
Explanation:
According to the text, “The gases in the atmosphere that hold heat are called greenhouse gases, and the cycle by which they heat the Earth is called the greenhouse effect.”
Greenhouse effect is the warming of atmosphere of the earth due to trapping of heat.
What is the greenhouse effect?The greenhouse effect is the phenomenon in which heat is trapped close to Earth's surface by greenhouse gases such as carbondioxide, methane and water vapors etc. Because of this effect, our earth experience warm environment.
So we can conclude that greenhouse effect is the warming of atmosphere of the earth due to trapping of heat.
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A quantum of light has frequency of 1.8 x 10^14 Hz. Finds its energy.
Its energy : 1.193 x 10⁻¹⁹ J
Further explanationRadiation energy is absorbed by photons
The energy in one photon can be formulated as
[tex]\large{\boxed{\bold{E\:=\:h\:.\:f}}}[/tex]
Where
h = Planck's constant (6,626.10⁻³⁴ Js)
f = Frequency of electromagnetic waves
f = c / λ
c = speed of light
= 3.10⁸
λ = wavelength
[tex]\tt E=6.626\times 10^{-34}\times 1.8\times 10^{14}\\\\E=1.193\times 10^{-19}~J[/tex]
Which natural event can occur either over a few weeks or over a few million years?
OA. formation of a tornado
OB. flooding caused by a rainstorm
OC.
formation of a volcano
OD
a tsunami hitting a coastal area
Answer:
maybe formation of a volcano
Explanation:
I think the other events probably won't take few million years to occur
Also small mountains can be formed in months
In which stage do cells spend most of their time?
Interphase
Answer:
Interphase
Explanation:
I think you answered your own question chief? lol
Answer:
Explanation:
Heres your answer! (or what I think is) A cell cycle is a series of events that takes place in a cell as it grows and divides. A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division. The cell then leaves interphase, undergoes mitosis, and completes its division.
Asappp plzz help mee
Which of the following corresponds to an alpha particle?
A. A helium nucleus, with an atomic number of 1 and an atomic
mass of 2
O B. A hydrogen nucleus, with an atomic number of 1 and an atomic
mass of 1
C. A helium nucleus, with an atomic number of 2 and an atomic
mass of 2
D. A helium nucleus, with an atomic number of 2 and an atomic mass
of 4
The statement that corresponds to an alpha particle is a helium nucleus, with an atomic number of 2 and an atomic mass of 4.
What is an alpha particle?Alpha particle is a positively charged nucleus of a helium-4 atom (consisting of two protons and two neutrons), emitted as a consequence of radioactivity.
The alpha(α) particle has a symbol of 4/2He; suggesting that the atomic number is 2 and the atomic mass is 4.
Therefore, the statement that corresponds to an alpha particle is a helium nucleus, with an atomic number of 2 and an atomic mass of 4.
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In the following reaction, which species is reduced? Au(s) + 3NO3-(aq) + 6H+(aq) → Au3+(aq) + NO(g) + 3H2O (l) H+ N+5 O2- H2O Au
Answer:
NO3-
Explanation:
Given the reaction equation;
Au(s) + 3NO3-(aq) + 6H+(aq)→Au3+(aq) + 3NO2(g) + 3H2O (l).
We can consider the oxidation states of species on the left and right hand sides of the reaction equation;
Au is in zero oxidation state on the left hand side and an oxidation state of +3 on the righthand side.
NO3- is in oxidation state of +5 on the righthand side and NO2 is in + 4 oxidation state.
H+ is in + 1 oxidation state on both the left and right hand sides of the reaction equation.
Since reduction has to do with a decrease in oxidation number, it follows that NO3- was reduced in the reaction.
Calculate the Molarity
1) 1.04 M
2) 4.02 M
__________________________________________________________
Explanation:Part 1:We are given:
Number of Moles (n) = 0.65 moles
Volume of Solution (V) = 1.6 L
Solving for the Molarity:
We know that:
Molarity = nV
(where n is the number of moles and V is the volume of the solution in L)
replacing the variables
Molarity = 0.65 * 1.6
Molarity = 1.04 M
Hence, the Molarity is 1.04 M
__________________________________________________________
Part 2:We are given:
Volume of Solution = 825 mL OR 0.825 L
Mass of MgS = 28.7 grams
Number of Moles of MgS:
Number of moles = Given mass / Molar mass
Number of Moles = 28.7 / 56.38 [molar mass of MgS = 56.38 g/mol]
Number of Moles = 0.51 moles
Molarity of the Given solution:
We know that:
Molarity = nV
[where n is the number of moles and V is the volume of the solution in L]
replacing the variables
Molarity = 0.51 * 0.825
Molarity = 0.42 M
Hence, the molarity is 0.42 M
Calculate the kilograms of iron that would be produced from 1340 g of calcium carbonate.
Answer:
1.340kg
Explanation:
ASAP HELPP PLEASE
Phosphorus
pentafluoride is a known toxic, colorless gas while nitrogen pentafluoride is only a
theoretical compound. Justify this statement. Use your knowledge about the octet rule, its
exceptions and atomic orbitals in your explanation
Answer:
Explanation:
Nitrogen cant form more than 4 bonds
