Answer:
I believe the answer is A: *It is the simplest form of matter" not 100% sure but I think that's correct
Explanation:
What volume of a 3.00M KL stock solution would you use to make 0.300 L of a 1.25M Kl solution?
Answer:
0.125L or 125 mL
Explanation:
See the image for steps!0.125L of 3.00M KI stock solution is required to make 0.300 L of a 1.25M KI solution.
What is solution?A solution is a homogeneous mixture of one or more solutes dissolved in a solvent.
What is stock solution?A stock solution is a concentrated solution that will be diluted to a solution of lower concentration.
stock solution = diluted solution
What do you mean by dilution?Dilution is the process of decreasing the concentration of a stock solution by adding more solvent to the solution. The solvent added is the water. The more the solvent you add, the more dilute the solution is.The equation for dilution is M1V1=M2V2Where, M1 = concentration in molarity (moles/Litres) of the concentrated solution
V2 = volume of the concentrated solution,
M2 = concentration in molarity of the dilute solution
V2 = volume of the dilute solution.
The volume of 3.00M KI solution can be calculated using the dilution equation:
Given:
M1 = 3.00M, M2 = 1.25M, V1 = x, V2 = 0.300L
M1V1 = M2V2
3.00M(x) = 1.25M(0.300L)
x = 0.125L
Hence, 0.125L of 3.00M KI stock solution is required to make 0.300 L of a 1.25M KI solution.
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2B + 3H2 2BH3
How many moles of BH3 are synthesized when 27.0 moles of H2 completely react?
Answer: 18.0 moles of [tex]BH_3[/tex] will be produced when 27.0 moles of [tex]H_2[/tex] completely react.
Explanation:
The balanced chemical equation is:
[tex]2B+3H_2\rightarrow 2BH_3[/tex]
According to stoichiometry :
3 moles of [tex]H_2[/tex] produce = 2 moles of [tex]BH_3[/tex]
Thus 27.0 moles of [tex]H_2[/tex] will produce=[tex]\frac{2}{3}\times 27.0=18.0 moles[/tex] of [tex]BH_3[/tex]
Thus 18.0 moles of [tex]BH_3[/tex] will be produced when 27.0 moles of [tex]H_2[/tex] completely react.
Which phrase defines altitude?
how tightly molecules are packed
a column of air pushing on an area
the force pushing on an area or a surface
the height of a given point above sea level
A substance joined by this type of bond shares electrons
Answer: Covalent
Explanation:
A covalent compound is formed when an element shares its valence electron with another element. This compound is formed between two non metals. Example: [tex]HF[/tex]
An ionic compound is formed when an element completely transfers its valence electron to another element. The element which donates the electron is known as electropositive element or the metal and the element which accepts the electrons is known as electronegative element or non metal. Example: [tex]NaCl[/tex]
How many particles are in 3.4 moles of HCl?
Answer:
The volume is 77 L.
Explanation:
where P is pressure, V is volume, n is moles, R is the gas constant, and T is temperature in Kelvins.
The current STP temperature is 0∘C or 273.15 K (used for gas laws), and the pressure is 105Pa, which most people write as 100 kPa (both pressures are equal).
An advantage of using renewable energies is? 1.They are harmful to the environment 2.We have a limited supply of them 3.They allow us to take energy from natural processes
Answer:
3. They allow us to take energy from natural processes
Explanation:
There are two major sources of energy namely: renewable and non-renewable. Renewable sources of energy are those natural sources that gets replenished faster than they are utilized, which is contrary to non-renewable sources. Examples of renewable sources of energy are wind energy, solar energy, hydro (water) energy.
According to the question, one advantage or merit that renewable sources have over their counterparts is that they allow us to take energy from natural processes e.g. wind, sunlight etc.
Balance this equation. Not all spots have to have a number.
____Na(s) + ____H2O(g) → ____NaOH(s) + ____H2 (g)
2Na+2H2O----2NaOH+H2
What type of mixture is salad dressing please tell me? Tysm!
Answer:
Salad dressing made with oil vinegar, and herb is a homogeneous mixtures. Because heterogeneus mixture is composed of two or more components which are unequal distributed.
But in normal salad it's heterogeneous
what is the most important part of an Atom? Why?
Answer:
I would say proton and electron are the two most important subatomic particles in an atom
Explanation:
The number of protons inside a nucleus must equal to the number of electrons outside of the nucleus. This number determines all the chemical properties of the atom, which governs the behaviors of all matters in our world.
Answer:
I would say proton and electron are the two most important subatomic particles in an atom. The number of protons inside a nucleus must equal to the number of electrons outside of the nucleus. This number determines all the chemical properties of the atom, which governs the behaviors of all matters in our world.
Explanation:
Which type of plate boundary is associated with seafloor spreading at the source of the spread: convergent, divergent, or transform?
HURRY!
Which has more mass, one mole of carbon (C) or one mole of copper (Cu)?
Explain.
20 points
Which of the following objects below is NOT needed to test electrical conductivity?
battery
object powered by electricity
insulated wire
electrical tape
Answer:
I`m pretty sure it`s electrical tape.
Explanation:
The objects which does not conduct electricity are called insulators which are not needed to test electrical conductivity. Hence, insulated wire is the correct option.
What is conductivity ?Conductivity of a substance is the ability to conduct electrically or thermally through the substance. Based on their conductivity, there are three classes of materials conductors, semiconductors and insulators.
Conductors are materials conducting heat and electricity at all temperatures. Semiconductors conduct only at higher temperature or on doping. Insulators are material does not conduct at any condition.
Metals are good conductors. Silicon , germanium etc. are semiconductors. Whereas, wood, plastic etc. are insulators they does not allow flow of electrons through it. Therefore, an insulated wire is not needed to test conductivity.
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Write a balanced symbol equation for the incomplete combustion of hexane (C6H14) to produce soot.
Answer:
I77
Explanation:
6. How many molecules are in 2.7 moles of carbon dioxide
Answer:
2.7×6.022×10^23
=16.594×10^23 moleclules
Explanation:
number of mol= 2.7
1 mol of any element=6.022×10^23
therefote 2.7 mol =2.7×6.022×10^23
=16.594×10^23
Which part(s) of a microscope forms an enlarged image of a specimens?
A: The light source
B: The focus knobs
C: The stage
D: The objective lenses
Boreal forests are characterized by _______ trees. A. Creosote b. Eucalyptus c. Coniferous d. Deciduous Please select the best answer from the choices provided A B C
Answer:
c
Explanation:
coniferous trees, Tianga also called Boreal forest biome (major life zone).
hope it's perfect.
Answer: C is correct.
IM IN A TEST NEED HELP ASAP
When 2.00 mol of the acid react with sodium carbonate, 1.00 mol of carbon dioxide is formed.Calculate the volume of carbon dioxide formed, in cm 3 , from 8.00 g of the acid at room temperature and pressure.
good luck on ur test i wish i could help u more but im only in 7th grade :/ and i dont know that yet, so sorry again! :(
Explanation:
If 0.150 moles of calcium oxide reacts with carbon dioxide gas, how many grams of calcium carbonate can be produced?
Answer:
15 g of CaCo₃
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
CaO + CO₂ —> CaCo₃
From the balanced equation above,
1 mole of CaO reacted to produce 1 mole of CaCo₃.
Next, we shall determine the number of mole of CaCo₃ produced by the reaction of 0.15 mole of CaO. This can be obtained as follow:
From the balanced equation above,
1 mole of CaO reacted to produce 1 mole of CaCo₃.
Therefore, 0.15 mole of CaO will also react to produce 0.15 mole of CaCo₃.
Finally, we shall determine the mass of 0.15 mole of CaCo₃. This can be obtained as follow:
Mole of CaCo₃ = 0.15 mole
Molar mass of CaCo₃ = 40 + 12 + (16×3)
= 40 + 12 + 48
= 100 g/mol
Mass of CaCo₃ =?
Mole = mass / Molar mass
0.15 = Mass of CaCo₃ / 100
Cross multiply
Mass of CaCo₃ = 0.15 × 100
Mass of CaCo₃ = 15 g
Thus, 15 g of CaCo₃ were obtained from the reaction.
How many grams of lithium sulfide (Li2S) are in 275 g of a 16 % aqueous solution of Li2S?
Answer:
600 mAh·g−1
Explanation:
i hope this is good let me know if its wrong
what do we call the liquid that the solid Is being added to?
Answer:
When a solid dissolves the solid and the liquid they form a mixture called a solution.
what is a substance combination of different atoms?
Answer:
Brainliest-
Explanation:
what is the orbital diagram for manganese?
Explanation:
Oxidation States. +2,3,4,6,7
Electrons Per Shell 2 8 15
Electron Configuration [Ar] 4s2 3d5
1s2 2s2 2p6 3s2 3p6 4s2 3d5
Can someone answer this asap!! All I know is 188g is incorrect!
Answer:
db gb bg
Explanation:
Chemical energy is contained in the chemical bonds of a substance. True or False
Describe the structure or shape of DNA
Answer:
a double helix structure
Explanation:
a two-stranded molecule that appears twisted, giving it a unique shape referred to most commonly as the double helix structure
Cuando haces ejercicios abdominales estas realizando un trabajo. Si haces el mismo numero de abdominales en la mitad de tiempo que acostumbras, ¿como seria tu rendimiento en terminos de potencia comparandolo con el tiempo normal en que las haces?
Answer:
El rendimiento seria mayor ya que la potencia aumenta.
Explanation:
La potencia aumenta cuando determinado trabajo se realiza en menor cantidad de tiempo.