Explanation:
Three things are required in proper combination before ignition and combustion can take place---Heat, Oxygen and Fuel. There must be Fuel to burn. There must be Air to supply oxygen. There must be Heat (ignition temperature) to start and continue the combustion process.
if a material conducts heat easily, its a good _____.
It has to be a 18 letter word
Answer:
a thermal conductor
Explanation:
thats what its called
Two ways that salinity can increase
Answer:
Evaporation of ocean water and the formation of sea ice both increase the salinity of the ocean.
Explanation:
who is sire sirol from among us?
Answer:
I'm not sure,
Explanation:
Can I have brainliest? It would help me out, if not thanks anyways! Hope this helped and have a nice day!
What two forces drive the rock cycle on Earth?
Answer:
The rock cycle is driven by two forces: (1) Earth's internal heat engine, which moves material around in the core and the mantle and leads to slow but significant changes within the crust, and (2) the hydrological cycle, which is the movement of water, ice, and air at the surface, and is powered by the sun.
Explanation:
Yo wassup with these links every time I ask a question there’s a link everywhere it’s making me mad this needs to stop
TRUE OR FALSE?
The reason for forming multiple bonds is an interaction of end to end type between unhybridized p orbitals.
20 points!
Answer:
I think its false
Explanation:
Why do different parts of the world have such different animals?
Answer:
a
Explanation:
Parallel structure aids the reader's comprehension of ideas and their relative importance True or False
Answer:
This question is obviously true
Explanation:
I would expect
A chemist has a small amount of compound that has the boiling point 65°c that must be fractionally distilled. Yet, the chemist doesn't want to lose any of the compound to hold up on the column. What the chemist should do?
Answer:
A "chaser," a high-boiling compound whose vapors will displace the vapors of the desired low-boiling compound, can be used to distill a small amount of compound.
A smaller fractionation apparatus or a Vigreux column could be used instead.
Explanation:
Given the following information: SO2(g) + 12 O2(g) = SO3(g) Kp = 2.5E-2 What is the Kp value for the following reaction: 2 SO2(g) + O2(g) = 2 SO3(g)
Answer:
K = 6.25x10⁻⁴
Explanation:
Based on the reaction:
SO₂ + 1/2 O₂ ⇄ SO₃ Kp = 2.5x10⁻²
We can find the Kp of a similar reaction using Hess's law where the sum of 2 reactions a and b produce a K that is:
K = Ka*Kb
The sum of twice the reaction of the problem:
SO₂ + 1/2 O₂ ⇄ SO₃
+ SO₂ + 1/2 O₂ ⇄ SO₃
2SO₂ + O₂ ⇄ 2SO₃
Where K must be:
K = Kp*Kp = Kp²
K = (2.5x10⁻²)²
K = 6.25x10⁻⁴In the covalent compound CH3, the Greek prefix used to represent the anion is Answer here
Answer:
Tri.
Explanation:
''Tri'' is the Greek prefix used to represent the CH3 because there are three hydrogen atoms to form the covalent compound so in Greek method ''Tri'' is used for three. In Greek system, there are certain names for prefixes such as ''di'' is used for two, ''tri'' is used for three, ''tetra'' is used for four etc. This method only provides information about the number of atoms that form the covalent compound.
Determina cuantos moles hay en 2.31g de NaCl
Answer:
0.0395 mol NaCl
Explanation:
¡Hola!
En este caso, es necesario para nosotros considerar que las relaciones masa-mol se desarrollan teniendo en cuenta las masas molares de los compuestos involucrados en el sistema. Ahora, dado que este sistema se compone de NaCl, cloruro de sodio como sal de mesa, es posible saber que la masa molar de este es alrededor de 58.44 g/mol.
De esta manera, las moles en 2.31 g se calculan como sigue:
[tex]=2.31gNaCl*\frac{1molNaCl}{58.44gNaCl}\\\\=0.0395molNaCl[/tex]
¡Saludos!
What is the pH of a 3.5 x 10-5 M solution of HCl?
Answer:
pH = 4.45
Explanation:
We need to find the pH of [tex]3.5\times 10^{-5}\ M[/tex] solution of HCl. We know that, pH of a solution is given by :
[tex]pH=-log[H]^+[/tex]
Put all the values,
[tex]pH=-log[3.5\times 10^{-5}]\\\\pH=4.45[/tex]
So, the pH of the solution of HCl is 4.45.
answer this correctly, only sincere answers please. I really need help. I will do all I can to make someone answer this. Thanks! ASAP
Explain the relationship between pH, POH, hydronium concentration and hydroxide concentration and be prepared to complete the chart below based on the provided knowns.
Complete the chart below based on the provided knowns.
H+ ______x_______
OH - 1 x 10^-11______
pH 3_____________
POH _____y_______
Answer:
See Explanation
Explanation:
Let us recall that;
[H^+] [OH^-] = 1 * 10^-14
Where;
[OH^-] = 1 x 10^-11
Then;
[H^+] = 1 * 10^-14/1 x 10^-11
[H^+] = 1 * 10^-3
pH = -log [H^+]
pH = -log(1 * 10^-3)
pH = 3
Also;
pH + pOH = 14
pOH = 14 - pH
pOH = 14 -3
pOH = 11
Write the balanced half equation of iron 2 and permanganate in a solution of acid. Show all of your work.
Answer:
5Fe⁺² + MnO₄⁻ + 8H⁺ => 5Fe⁺³ + Mn⁺² + 4H₂O
Explanation:
Fe⁺² + MnO₄⁻ + H⁺ => Mn⁺² + Fe⁺³ + H₂O
5(Fe⁺² => Fe⁺³ + 1e⁻) => 5Fe⁺² => 5Fe⁺³ + 5e⁻
MnO₄⁻ + 5e⁻ => Mn⁺² => MnO₄⁻ + 8H⁺ + 5e⁻ => Mn⁺² + 4H₂O
=> 5Fe⁺² + MnO₄⁻ + 8H⁺ => 5Fe⁺³ + Mn⁺² + 4H₂O
Un catión tetravalente tiene 50 electrones, si la cantidad de neutrones excede en 20 a su número atómico; hallar su número de masa. a) 162 b) 128 c) 281 d) 234
Answer:
I don't speak espanol
Explanation:
hdhdbdbdbsnsnsndndndnd
How many grams of NiNi are formed from 55.3 g55.3 g of Ni2O3Ni2O3?
2Ni2O3(s)⟶4Ni(s)+3O2(g)2Ni2O3(s)⟶4Ni(s)+3O2(g)
Step 1: Show the strategy for solving this problem.
You are currently in a labeling module. Turn off browse mode or quick nav, Tab to items, Space or Enter to pick up, Tab to move, Space or Enter to drop.
grams Ni2O3⟶⟶⟶grams Nigrams Ni2O3⟶⟶⟶grams Ni
Answer Bank
grams O2O2
moles NiNi
grams NiNi
moles Ni2O3Ni2O3
moles O2O2
grams Ni2O3Ni2O3
Answer:
110.92 g
Explanation:
Amount of Ni2O3 consumed= 55.3/59 =0.94 moles
From the reaction equation;
2 moles of Ni2O3 yields 4 moles of Ni
0.94 moles yields 0.94 moles * 4/2
= 1.88 moles of Ni2O3
Mass of 1.88 moles of Ni2O3 = 1.88 moles of Ni2O3 * 59 gmol-1 = 110.92 g
convert 32 degrees celsius to kelvin
Answer:
305.15
Explanation:
32 celsius converted to kelvin is 305.15 kelvin
Formula
32°C + 273.15 = 305.15K
When water molecules gain a hydrogen ion, the ion that forms is _________.
A. hydronium
B. hydroxide
C. water ion
D. hydrogen ion
Answer:hydronium
Explanation:
An atom or ion has 7 protons, 7 neutrons, and 6 electrons. Is it positive, negative, or
neutral? Why? What element is it?
Can someone please help!
Answer:
Any atom with six protons, regardless of how much other stuff it has, is a carbon atom. Having 7 neutrons, this would be an atom of Carbon 13 (C-13), a stable isotope of carbon making up 1.1% of natural carbon in the atmosphere and near the Earth's surface. As for the electrons, Carbon has six, but atoms may temporarily pick up or lose electrons in the hurly burly of chemical reactions, solar radiation and so forth. This is a negative ion of C13, which will soon pass on its extra election to an atom which needs it (a positive ion).
Explanation:
https://www.quora.com/What-element-has-6-protons-7-neutrons-and-7-electrons
how many moles of solute are in 9.03 M solution with 15.8 L of solution?
Answer:
Explanation:
How many moles of solute are in 9.03 M solution with 15.8 L of solution?
Which of the following is a property of water?
It has a relatively high heat capacity.
It freezes in a short time.
It exists in only the liquid state.
It repels other water molecules.
Answer:
The correct answer is a
A property of water among the given properties It has a relatively high heat capacity. Hence Option (A) is correct
What is Heat Capacity ?Heat capacity or thermal capacity is a physical property of matter, defined as the amount of heat to be supplied to an object to produce a unit change in its temperature.
The SI unit of heat capacity is joule per kelvin. Heat capacity is an extensive property.
Therefore, A property of water among the given properties It has a relatively high heat capacity. Hence Option (A) is correct.
Learn more about Heat capacity here ;
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How many moles of gas are in a 25 L container if the temperature is 289 K and the pressure is 125 atm?
Answer:
1.3 moles
Explanation:
pv = nrt
n = pv/rt
n = (125 * 25) / (8.3144598 * 289)
n = 1.3 moles
Answer the boxes in the image
Answer: the c thingy is where you be like burgundy sauce then be like racial slair is what it mean's so the name thingy
Explanation:
A cubic box has a 0.5 meter side. Find the mass of air in the box in kilograms. (1 Liter of air has a mass of 1.3 g). *
m = 0.1625 kg
m = 162.5 kg
m = 16.25 kg
m = 16 kg
A cubic box has a 0.5 meter side. Find the volume of air in the box in a liter? *
V = 2.5 L
V = 0.125 L
V = 125 L
V = 12.5 L
Answer: [tex]m=0.1625\ kg,\ ,V=125\ L[/tex]
Explanation:
Given
The length of the box is [tex]a=0.5\ m[/tex]
1 liter of air has a mass of 1.3 gm
So, the density of air is [tex]1.3\ g/L[/tex]
The volume of the box is
[tex]\Rightarrow a^3=0.5^3\\\Rightarrow 0.125\ m^3\ or\ 125\ L[/tex]
Mass of air in the box is
[tex]\Rightarrow m=\rho \times V\\\Rightarrow m=1.3\times 125\\\Rightarrow m=162.5\ gm\ or\ 0.1625\ kg[/tex]
For each equation, state the reaction type and then balance the equation.
___Na3PO4 + ___HCl → ___H3PO4 + ___NaCl Will give brainliest
NOT A DOWNLOAD CMON
Answer:
Na3PO4+3HCl —> H3PO4+3NaCl
The reaction type for this equation is a double displacement or acid-base reaction, where Na₃PO₄ and HCl exchange ions to form H₃PO₄ and NaCl.
What is double displacement reaction?A double displacement reaction is a type of chemical reaction in which the cations and anions of two different compounds exchange places, producing two new compounds. Double displacement reactions are also known as double replacement, metathesis, or ion-exchange reactions.
To balance the equation, you need to make sure that the number of atoms of each element is equal on both sides of the equation. Here is one possible balanced equation:
2Na₃PO₄+ 6HCl → 2H₃PO₄ + 6NaCl
In this balanced equation, there are:
6 sodium atoms (Na) on both sides
2 phosphorus atoms (P) on both sides
12 oxygen atoms (O) on both sides
6 hydrogen atoms (H) on both sides
Note that you can also write the equation in terms of formulas instead of names:
Na₃PO₄ + 3HCl → H₃PO₄ + 3NaCl
Both equations represent the same chemical reaction, but the second one is more concise.
Find more on double displacement reactions:
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12. Convert 1.98 grams of PbSo, to molecules.
No links please
Answer:
3.93 × 10²¹ molecules
Explanation:
Convert 1.98 grams of PbSO₄ to molecules.
Step 1: Given data
Mass of PbSO₄: 1.98 g
Step 2: Calculate the number of moles corresponding to 1.98 g of PbSO₄
The molar mass of PbSO₄ is 303.26 g/mol.
1.98 g × 1 mol/303.26 g = 6.53 × 10⁻³ mol
Step 3: Calculate the number of molecules in 6.53 × 10⁻³ moles of PbSO₄
To convert moles to molecules, we need a conversion factor: Avogadro's number. There are 6.02 × 10²³ molecules of PbSO₄ in 1 mole of molecules of PbSO₄.
6.53 × 10⁻³ mol × 6.02 × 10²³ molecules/1 mol = 3.93 × 10²¹ molecules
413 mg of dried KHP is dissolved in 41 mL of distilled water and titrated with potassium hydroxide (KOH). If it took 20.05 mL of KOH to reach the endpoint, determine the concentration of KOH. Show calculations.
Answer: The concentration of KOH is 0.1 M.
Explanation:
Given: Mass of KHP = 413 mg (1 mg = 0.001 g) = 0.413 g
Volume of KOH = 20.05 mL
Volume of solution = 41 mL
The molecular mass of KHP is 204.22 g/mol
Hence, moles of KHP are calculated as follows.
[tex]No. of moles = \frac{mass}{molar mass}\\= \frac{0.413 g}{204.22 g/mol}\\= 0.002 mol[/tex]
As molarity is the number of moles of a substance present in a liter of solution.
So, molarity of the given solution is as follows.
[tex]Molarity = \frac{no. of moles}{Volume (in L)}\\= \frac{0.002 M}{0.041 L}\\= 0.0493 M[/tex]
When the given solution is titrated with KOH then concentration of KOH is calculated as follows.
[tex]M_{1}V_{1} = M_{2}V_{2}[/tex]
Substitute the values into above formula.
[tex]M_{1}V_{1} = M_{2}V_{2}\\0.0493 M \times 41 mL = M_{2} \times 20.05 mL\\M_{2} = \frac{0.0493 M \times 41 mL}{20.05 mL}\\= 0.1 M[/tex]
Thus, we can conclude that the concentration of KOH is 0.1 M.
I don’t know how to do this, LIKE IT WAS NOT EVEN IN THE VIDEO :/
The formation of soap can be done with the process of saponification in which triglyceraldehyde reacts with 3 molecules of Sodium Hydroxide (NaOH) and produces Glycerol and 3 molecules of Sodium palmitate (Soap).
(Reaction is attached as image)
What is Saponification ?Saponification is a process that involves the conversion of fat, oil, or lipid, into soap and alcohol by the action of aqueous alkali.
Soaps are salts of fatty acids, which in turn are carboxylic acids with long carbon chains.
Hence, The formation of soap can be done with the process of saponification in which triglyceraldehyde reacts with 3 molecules of Sodium Hydroxide (NaOH) and produces Glycerol and 3 molecules of Sodium palmitate (Soap).
Learn more about Saponification here ;
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Hi. I need a full distillation organic chemistry lab report.
Explanation:
The purpose of this seven-page lab report is to use simple and fractional distillation to purify volatile liquids. The boiling points were obtained from the distillate collected drops and the efficiency of the two methods of purification were compared. The introduction experiment, data, conclusion