Answer: 0.233 M
Explanation: (0.550 M)(0.0320 L)= 17.6e-3 mol NaOH
3:1 ratio of NaOH to H3PO4 so divide the moles of NaOH (17.6e-3) by 3. You will get 5.86e-3.
Finally, divide this number (the moles of H3PO4) by the volume (0.252 L) to get 0.233 M
The concentration of given acid base reaction will be 0.226 M
What is Acid base reaction?The chemical reactions that take place when acids and bases are combined together are known as acid-base reactions. Acids and bases are discussed in terms of hydrogen ion exchange in the Bronsted-Lowry hypothesis. A conjugate acid as well as a conjugate base are the end products of such a reaction.
The given acid base reaction is :
H3PO4 + 3NaOH = Na3PO4 + 3H2O.
It can be seen that 3 moles of NaOH give one moles of Na3PO4.
Moles of NaOH = 0.550 M/ 0.0320 L = 17.18
So, by divide the moles of NaOH = 17.18 /3 = 5.72
The given volume = 25.2 mL = 0.252 L
Concentration of acid base reaction = n / v
where, n = moles of solute , v = liters of solution.
Now, put the value of given data in above concentration of acid base reaction formula.
Concentration of acid base reaction = 5.72 / 0.252 L = 22 .69
Therefore, the concentration of acid base reaction will be 0.226M.
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What is the physical composition of our
air? What types of things is our air made
up of? Describe what it may look like, its
size, etc.
Answer:
Air is mainly a mixture of two gases.
Explanation:
Air is mainly a mixture of two gases, nitrogen (around 78%) and oxygen (around 21%). It also contains carbon dioxide (around 0.03%), noble gases (around 0.9%), water vapour and a very small amount of other kinds of gases. Air makes up the atmosphere, which is essential for life on Earth.
(FYI, argon has the highest percentage of composition among the noble gases)
IF ANSWER I WILL GIVE BRAINLESS
Question 9 (4 points)
If the 2nd Level consumers had 10 joules of energy in this food chain, how much energy was at the producer level?
Question 10 (4 points)
Why doesn't the total amount of energy from the producers make it to the owl? What evidence supports your answer?
Answer:
Answer 9 - 100 joules energy was at the producer level
Answer 10 - Remaining energy is used in metabolism
Explanation:
Answer 9
The energy at each trophic level is only 10% of the energy at its previous trophic level.
The energy at producer level is X
[tex]10[/tex] % of [tex]X = 10[/tex] Joules
[tex]\frac{10}{100} * X = 10\\X = 100[/tex]Joules
Answer 10
Because the remaining 90% energy is utilized by the producer for its metabolism
How many moles are in 1.51 x 10^24 molecules of water?
Answer:One mole of HBr has 6.02 x 1
0
23
molecules of HBr.
1 mole of HBr = 6.02 x 1
0
23
molecules of HBr.-----(a)
X mole of HBr has 1.21 x
10
24
molecules of HBr.
X mole of HBr = 1.21 x
10
24
molecules of HBr------(b)
Taking ratio of (a) and (b)
X / 1 = 1.21 x
10
24
/ 6.02 x 1
0
23
X= 2.009 moles.
Explanation:
What is the overall charge of an ion that has 11 protons, 13 electrons and 12 neutrons?
Answer:
+1
Explanation:
To calculate the charge on an ion, we simply use the number of protons and electrons. Protons are the positively charged subatomic particles. The electrons are the negatively charged particles in an atom.
When the number of protons are greater than that of electrons, the ion is positively charged.
When the number of protons are lesser than that of electrons, the ion is negatively charged.
When the number of protons and electrons are equal, the ion is neutral.
Answer Below and top
Charge = Protons - Electrons = 11 - 10 = +1
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Answer:
-2
Explanation:
How many moles are there in 5.80 X 1024 molecules of sodium sulfate, Na2SO3?
Answer:
[tex]\boxed {\boxed {\sf 9.63 \ mol \ Na_2SO_3}}[/tex]
Explanation:
To convert from molecules to moles, Avogadro's Number: 6.02*10²³ must be used. This number is the amount of particles (molecules, atoms, etc.) in 1 mole of a substance. In this case, the particles are molecules of sodium sulfate. Let's create a proportion.
[tex]\frac{ 6.022 *10^{23} \ molecules \ Na_2SO_3}{1 \ mol \ Na_2SO_3}[/tex]
Multiply by the given number of molecules.
[tex]5.80 *10^{24} \ molecules \ Na_2SO_3 *\frac{ 6.022 *10^{23} \ molecules \ Na_2SO_3}{1 \ mol \ Na_2SO_3}[/tex]
Flip the fraction so the molecules of sodium sulfate cancel.
[tex]5.80 *10^{24} \ molecules \ Na_2SO_3 *\frac{ 1 \ mol \ Na_2SO_3}{6.022 *10^{23} \ molecules \ Na_2SO_3}[/tex]
[tex]5.80 *10^{24} *\frac{ 1 \ mol \ Na_2SO_3}{6.022 *10^{23}}[/tex]
[tex]\frac{ 5.80 *10^{24} \ mol \ Na_2SO_3}{6.022 *10^{23}}[/tex]
Divide.
[tex]9.63135171 \ mol \ Na_2SO_3[/tex]
The original measurement has 3 significant figures (5, 8, and 0), so our answer must have the same.
For the number we calculated that is the hundredth place. The 1 in the thousandth place tells us to leave the 3.
[tex]9.63 \ mol \ Na_2SO_3[/tex]
There are about 9.63 moles of sodium sulfate
Which details from “When Volcanoes Erupt” would be important to include in a summary of the text? Select three details.
A.
Floods can be very dangerous and can destroy towns.
B.
Many animals can sense a natural disaster is coming.
C.
Scientists can make predictions that keep people from being in danger when volcanoes erupt.
D.
There are volcanic eruptions every year.
E.
Volcanic eruptions are natural processes, even though they can be deadly.
The important details that should be present in summary of the “When Volcanoes Erupt” are Many animals can sense a natural disaster is coming, Scientists can make predictions that keep people from being in danger when volcanoes erupt and Volcanic eruptions are natural processes, even though they can be deadly.
What is volcanic eruption?It is a natural disaster, in which gases and lava comes from the volcano in the explosively manner.
Many animals have sense of vibrations that are generated during the natural disaster and may run from that place. Scientists also do prediction about natural disasters by studying geographical changes and may help people from danger.
Hence options (B) , (C) and (E) are correct.
To know more about natural disasters, visit the below link:
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I have to take my DBA for chemistry, and I don’t understand what I should do for this part.
For the Dicarbon hexoxide i did C2O6 I’m not sure if that’s how you do it!! Please help
Answer:
PbBr₄
C₂O₆
Al₂S₃
Explanation:
Lead (IV) bromide
This is an ionic compound. Ionic compounds do not tell you how many of each atom you have in the name. You have to figure out how much there is based on the charges of the atoms.
The (IV) means that lead has a charge of +4. The charge is put in parentheses since lead is a transition metal, and the charge of a transition metal can vary. Bromine, on the other hand, is always assumed to have a charge of -1. When making a molecular formula, you need to have enough of each atom so that the charges cancel out.
Dicarbon hexoxide
This is a covalent compound. Covalent compounds will tell you how much of each atom you have in the name.
Dicarbon means two carbons. Hexoxide means six oxygens.
Aluminum sulfide
Aluminum sulfide is an ionic compound.
Aluminum has a charge of +3. Sulfur has a charge of -2.
All systems disperse their energy spontaneously?
Is it true or false? and WHY?
Answer:
True.
Explanation:
Yes, all systems disperse their energy spontaneously because all types of energy spontaneously flows from concentrated to dispersed if it is not hindered by any material in their way. Energy can be prevented from spreading by materials such as containers. If there is no substance in the path of energy so it can disperse automatically from a concentrated region to a lower region.
The products of a chemical reaction are chemically different substances than the reactants of a chemical reaction.
True or false?
this statement is true
Answer:
Hope it helps u
Why is the greenhouse effect important to life on Earth?
A. The greenhouse effect absorbs x-rays in the winter time.
B. The greenhouse effect helps Earth’s atmosphere hold in heat.
C. The greenhouse effect makes it much colder at the North and South poles.
D. The greenhouse effect reflects harmful radiation into the upper atmosphere.
Answer:
b
Explanation:
Answer:
d
Explanation:
In simplest terms, "greenhouse gases" let sunlight through to the earth's surface while trapping "outbound" radiation. This alters the radiative balance of the earth (see Figure A. 1) and results in a warming of the earth's surface.
9. The pH of an acidic solution is
A) greater than 14.
B) greater than 7.
C) less than 0.
D) less than 7.
Answer: d
Explanation:
a 13.5 liter balloon is heated from 248k to 324k. what will it's new volume be?
Answer:
The new volume is approximately 17.637 liters
Explanation:
The given parameters in the question are;
The initial volume of the gas, V₁ = 13.5 Liter
The initial temperature of the gas, T₁ = 248 K
The new temperature of the gas, T₂ = 324 K
A balloon containing gas that experiences an increase in the temperature of the gas content under constant pressure obeys Charles law which states that the volume of a given mass of gas is directly proportional to its Kelvin temperature is expressed mathematically as follows;
[tex]\dfrac{V_1}{T_1} = \dfrac{V_2}{T_2}[/tex]
Where;
V₁ = The initial volume of the gas
T₁ = The initial temperature of the gas
V₂ = The new volume of the gas
T₂ = The new temperature of the gas
From the question, we have;
V₁ = 13.5 Liter
T₁ = 248 K
T₂ = 324 K
Therefore, we have;
[tex]{V_2}= \dfrac{V_1}{T_1} \times T_2[/tex]
[tex]{V_2}= \dfrac{324 \ K}{248 \ K} \times 13.5 \ L=17\dfrac{79}{124} \ L\approx 17.637 \ L[/tex]
The new volume, V₂ ≈ 17.637 L.
what is on the left side ?
Answer:
reactants
Explanation:
When you produce a current/electron flow through a copper wire with a generator; the wire itself carrying the current (electron flow) also produces
a magnetic field.
True or false ?
If you are correct you get a brainless
(07.01 MC)
As a part of the life cycle of plants, the plant must begin with an embryo. What statement best describes where the embryo can be found in flowering and non-flowering plants? (2 points)
The ionic compound formed from sodium and chloride ions is called ____.
Answer:
sodium chloride
Explanation:
3. The total pressure of helium and Argon gas in a closed cylinder is 3.0 atm. If the partial pressure of the Argon is 0.365 atm, what is the partial pressure of the helium?
If you are correct you get a brainless
(07.01 MC)
As a part of the life cycle of plants, the plant must begin with an embryo. What statement best describes where the embryo can be found in flowering and non-flowering plants? (2 points)
a
In a flowering plant, the embryo is in seeds found in the flower, and in non-flowering plants, the embryo is in seeds found in the cone.
b
In a non-flowering plant, the embryo is in spores found in the stem, and in a flowering plant, the embryo is in seeds found in the flower.
c
In a non-flowering plant, the embryo is in seeds in the leaves, and in a flowering plant, the embryo is in seeds found in the spores.
d
In a flowering plant, the embryo is in spores found in the flower, and in a non-flowering plant, the embryo is in seeds found in the spores.
Answer:
I Think it might be A! I hope I am right!
When a calcium atom becomes an ion, it
gains one proton
Loses one electron.
gains two electrons.
Loses two electrons.
Explanation:
Most atoms do not have eight electrons in their valence electron shell. Some atoms have only a few electrons in their outer shell, while some atoms lack only one or two electrons to have an octet. In cases where an atom has three or fewer valence electrons, the atom may lose those valence electrons quite easily until what remains is a lower shell that contains an octet. Atoms that lose electrons acquire a positive charge as a result because they are left with fewer negatively charged electrons to balance the positive charges of the protons in the nucleus. Positively charged ions are called cations. Most metals become cations when they make ionic compounds.
Cations
A neutral sodium atom is likely to achieve an octet in its outermost shell by losing its one valence electron.
Na→Na++e−(4.7.1)(4.7.1)Na→Na++e−
The cation produced in this way, Na+, is called the sodium ion to distinguish it from the element. The outermost shell of the sodium ion is the second electron shell, which has eight electrons in it. The octet rule has been satisfied. Figure 4.7.14.7.1 is a graphical depiction of this process.
Figure 4.7.14.7.1: The Formation of a Sodium Ion. On the left, a sodium atom has 11 electrons. On the right, the sodium ion only has 10 electrons and a 1+ charge.
Anions
Some atoms have nearly eight electrons in their valence shell and can gain additional valence electrons until they have an octet. When these atoms gain electrons, they acquire a negative charge because they now possess more electrons than protons. Negatively charged ions are called anions. Most nonmetals become anions when they make ionic compounds.
A neutral chlorine atom has seven electrons in its outermost shell. Only one more electron is needed to achieve an octet in chlorine’s valence shell. (In table salt, this electron comes from the sodium atom.)
e−+Cl⟶Cl−(4.7.2)(4.7.2)e−+Cl⟶Cl−
In this case, the ion has the same outermost shell as the original atom, but now that shell has eight electrons in it. Once again, the octet rule has been satisfied. The resulting anion, Cl−, is called the chloride ion; note the slight change in the suffix (-ide instead of -ine) to create the name of this anion. Figure 4.7.24.7.2 is a graphical depiction of this process.
Figure 4.7.24.7.2: The Formation of a Chlorine Ion. On the left, the chlorine atom has 17 electrons. On the right, the chloride ion has 18 electrons and has a 1− charge.
The names for positive and negative ions are pronounced CAT-eye-ons and ANN-eye-ons, respectively.
In many cases, elements that belong to the same group (vertical column) on the periodic table form ions with the same charge because they have the same number of valence electrons. Thus, the periodic table becomes a tool for remembering the charges on many ions. For example, all ions made from alkali metals, the first column on the periodic table, have a 1+ charge. Ions made from alkaline earth metals, the second group on the periodic table, have a 2+ charge. On the other side of the periodic table, the next-to-last column, the halogens, form ions having a 1− charge. Figure 4.7.34.7.3 shows how the charge on many ions can be predicted by the location of an element on the periodic table. Note the convention of first writing the number and then the sign on a ion with multiple charges. The barium cation is written Ba2+, not Ba+2.
you want 200 mL of a 0.1 g/mL solution of sugar. how do you prepare the solution?
Describe what a phase diagram is
Answer:
The graph which shows under what conditions of temperature and pressure distinct phases of matter occur is called phase diagram.
The diameter of a circle is 14 kilometers. What is the circle's circumference?
Answer:
C = 43.96
Explanation:
Formula:
C = 2πr
r = 14/2 = 7
C = 2(3.14)(7)
C = 43.96
How many molecules are in 4.5 grams of N20?
1.44
⋅
10
24
molecules
N
2
This would means that there would be
2.88
⋅
10
24
atoms
N
2
Explanation:
Which of the following would be a part of an environment engineer's job description ?
Answer:
where is the options
Explanation:
give options
4) How many atoms are present in a sample of oxygen, O2 with 12.222 moles?
Answer:
two oxygen atoms
If 3.1 moles of potassium chloride react with oxygen, how many moles of potassium chlorate would be produced?
Answer: 19 dollar fortnite card Explanation:who wants it
I can be formed into a sheet, I am high in luster, and am a very good conductor. I must be a ...
a
metal
b
nonmetal
c
metalloid
d
noble gas
Answer: metal
Explanation:
what type of bond does carbon and sulphur form when they react. explain
Answer:
covalent bonding becaus of there both non metals
Please help me solve this question. Tell the method too
The answer is - 4 thats the charge of Si O
⁴ ¹0
i need a short paragraph (about two sentences) describing the geologic time scale.
The geologic time scale is the “calendar” for events in Earth history. It subdivides all time into named units of abstract time called—in descending order of duration—eons, eras, periods, epochs, and ages.