Explanation:
Zn + Sn3(PO4)4 = Zn3(PO4)2 + Sn - Balanced Chemical Equation
4.3 is limiting
is the answer
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The wet adiabatic lapse rate (or saturated adiabatic lapse rate) varies with temperature, is 0.5°C/100 m (5°C/km or 3.3°F/1,000 ft), and happens when the air is completely __________ with water vapor at its dew point.
This happens when the air is completely Saturated with water vapor at its dew point
What is wet adiabatic lapse rate ?Wet adiabatic lapse rate is the rate at which a saturated wet air cools down with increase in altitude through an adiabatic process. This is process is also known as saturated adiabatic lapse rate.
Hence we can conclude that This happens when the air is completely Saturated with water vapor at its dew point.
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Answer: saturated
Explanation:
11. As early as 1938. the use of NaOH was suggested as a means of removing CO2 from the cabin of a spacecraft according to the following (unbalanced) reaction: NaOH +CO2-
Na2CO3 + H2O.
a. If the average human body discharges 925,0 g CO, per day, how many moles of NaOH are
needed each day for each person in the spacecraft?
b. How many moles of each product are formed?
For a (unbalanced) reaction: NaOH +CO2-Na2CO3 + H2O, the moles of NaOH and moles of each product are formed are mathematically given as
a) Moles of NaOH =44.05
b) Moles of Na2CO3=21.0
Moles of H2O= 21.0What is the moles of NaOH and what moles of each product are formed?
Generally, the equation for the Chemical reaction is mathematically given as
2 NaOH(aq)+ CO2(g)------> Na2CO3(aq)+ H2O(l)
Therefore
Moles of CO2= 925/44
Moles of CO2=21.0
Hence
Moles of NaOH = 2 x Moles of CO2
Moles of NaOH = 2x925/44
Moles of NaOH =44.05
In conclusion
Moles of Na2CO3 925/44
Moles of Na2CO3=21.0
And
Moles of H2O= 925/44
Moles of H2O= 21.0
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HCl(?) + H2O(?) → H3O+(?) + Cl-(?)
What is the phase label on Cl-?
Answer:
H30,+ion is known as Hydroniom Ion
Explanation:
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I. Car metal rusting slowly for a year.
II. Condensation of water vapor on a mirror during a 5-minute shower.
III. The formation of a precipitate in a test tube during a 10-second reaction.
IV. The oxidation of copper on the Statue of Liberty for more than 100 years.
23) Which of the processes above are examples of a chemical reaction?
A) I and II
B) III and IV
C) I, II, and III
D) I, III, and IV
Answer:
d) I, III, and IV
Explanation:
rust, copper oxidation, and percipitate from a chemical reaction are all, well, chemical reactions.
What are the extensive and intensive properties described in this experiment? Which properties would change and which would stay the same if you ran the experiment sing 7.5-ounce cans instead of 12- ounce cans?
Intensive properties do not change as the size of an object changes but Extensive properties change as the size of an object changes; here the properties can not change because the amount of the water stays the same
What are the difference between Extensive property and Intensive Property ?The physical properties of matter can be divided into intensive and extensive properties and the terms are introduced in 1917 by Richard C Tolman.
Intensive properties are independent of the presence of number of substance and they are bulk properties, here the Characteristic doesn’t change.
The size of intensive properties cannot change, examples are Density, temperature, pressure etc. It can not depend on the amount of matter and also intensive properties are fixed, countable.
Extensive properties are dependent on the presence of number of substance, easily identified, Size of Extensive properties changes and It can be computed.
extensive properties depend on the amount of matter, often changes and are not countable; For example Volume, size, mass, length, weight
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6Li + N2 → 2Li3N chemical word equation
Answer:
this is an Oxidation-reduction
Explanation:
like is w reducing agent, N2 is an oxidizing agent
Why are polar and non polar liquids immiscible?
Answer:
When both liquid molecules are polar then they can attract one another - which leads to mixing (miscibility).
When the molecular liquid is nonpolar, then the water molecules attract only one another while ignoring the nonpolar liquid. the result is that the two liquids are immiscible.
Explanation:
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Answer:
They lack lack inter-molecular forces to disolve in the polar liquids.
Explanation:
Miscibility is the property of two substances to mix in all proportions (that is, to fully dissolve in each other at any concentration). Polar molecules like water will mix well with some other polar molecules but things like oil which are non polar do not mix well with polar molecules. This is because the oil and water lack inter-molecular forces to keep them mixed.
The atomic weight of nitrogen is what ?
Explanation:
[tex]\longmapsto\: \green{ hello \: mate \: }[/tex]
Atomic weight of nitrogen is 23
Which is the conjugate acid base pair in the following equation.
H 2 SO4+ H20 —> HSO 4 -1 + H3O+1
H2SO4 and HSO4-1
H2SO4-1 and H3O+1
H3O+1 and H2SO4
Answer:
the correct answer is H2SO4 and HSO4-41
Calculate the pH of solution
that has
[H+]of 8.1 x10^-4
Answer:
Explanation:
Calculate the pH of solution
that has
[H+]of 8.1 x10^-4
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Wetlands filter and clean water flowing through them. In the system shown in the diagram, the wetland cleans water entering the ocean by which means?
A: Run-off
B: Precipitation
C: Evaporation
D: Condensation
Answer:
im guessing its A run off
Explanation:
Answer: Run off
Explanation:
Wetlands have plants that clean water through. As water flows into a wetland it encounters the the plants growing there. This slows the water down making it less likely to cause erosion. The nutrient pollutants nitrogen and phosphorus are absorbed by the roots of the plants.
An empty beaker has a measured mass of 27.234 g. When some salt is added to the beaker, the combined mass is 35.9564 g. Calculate the mass of the salt only (show work), reporting your answer to the correct number of significant figures.
The mass of the salt only if 35.9564g is the combined mass of the beaker and the salt is 8.7224g
How to calculate mass?According to this question, an empty beaker has a measured mass of 27.234g. However, when some salt is added to the beaker, the combined mass is 35.9564g.
This means that to calculate the mass of the salt in the beaker, we have to subtract the mass of the empty beaker from the combined mass as follows:
mass of salt only = 35.9564g - 27.234g
mass of salt only = 8.7224g
Therefore, the mass of the salt only if 35.9564g is the combined mass of the beaker and the salt is 8.7224g.
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which of the following has the smallest radius? A, Mg B, Na+ C, Na D, Mg+
Answer:
Na+
Explanation:
it is least pull by the nuclear charge
Answer:
Na+
Explanation:
It is posetively charged and in the first column
What is the pH when the [H+] is 1 x 10^-3 M
A. 2
B. 3
C. -3
D. 4
Answer:
3
Explanation:
PH = -Log [H+]
PH = -Log [1 × 10^-3]
PH = -Log [10^-3]
Log (10) = 1
PH = -(-3) Log (10)
PH = 3 × 1
PH = 3
A science teacher asked her students to calculate the density of a toy cube. The mass of the cube was 120 grams and the height of the cube was 4 centimeters.
What was the density of the cube in cubic centimeters? (**At least 2 decimal places)
Explanation:
density=> ro=m/V
m=0,12kg
V=0,04m³=6,4.10^-5
=>0,12/6,4.10^-5=1875 kg/m³
what is the pH of a solution that has a [H+]=1.75x10^-11
[tex]pH = - \log[\text{H}^{+}] = -\log \left(1.75 \times 10^{-11} \right) = 10.757[/tex]
Convert the answer from #7 to kg. Use the correct significant figures.
Answer:
Socratic app
Explanation:
it will help you
The change in enthalpy that occurs in the process of converting reactants to products in a chemical reaction is called the _____ of reaction.
Answer:
∆H or Enthalpy of the reaction
Explanation:
If ∆H is +ve
Reaction is exothermicExample:-Combustion, mixing sodium/potassium in waterIf ∆H is -ve
Reaction is endothermicEx:-Melting of iceAre ionisation energy and electron affinity opposite phenomenal? Explain.Explain the observed discontinuities in ionisation energy periodicities.
Both ionization energy and electron affinity are opposite processes to each other because of their functions.
What is the diifference between ionization energy and electron affinity?The main difference between electron affinity and ionization energy is that electron affinity refers to the amount of energy released when an atom gains an electron while on the other hand, ionization energy is the amount of energy required to remove an outermost electron from an atom.
So we can conclude that both ionization energy and electron affinity are opposite processes to each other because of their functions.
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Human colour vision is “produced” by the nervous system based on how three different cone receptors interact with photons of light in the eye. These three different types of cones interact with photons of different frequency light, as indicated in the following chart: Cone Type Range of Light Frequency Detected S 6.00-7.49 x 1014 s-1 M 4.76-6.62 x 1014 s-1 L 4.28-6.00 x 1014 s-1 What wavelength ranges (and corresponding colours) do the three types of cones detect?
The colors and the corresponding wavelengths the three types of cones detect are:
Blue: 450–495 nmGreen: 495–570 nmRed: 620–750 nmWhat is the role of cones in Human vision?Human vision refers to the ability of humans to see and visualize objects in the environment in terms in texture, color, pattern, etc.
The cells of the human eye responsible for vision are the rods and cones.
The cones are responsible for color-vision while rods are responsible for black and white vision.
The three types of cones detect blue, green, and red colors corresponding to wavelengths given below:
Blue: 450–495 nmGreen: 495–570 nmRed: 620–750 nmTherefore, the cones in the eye detect blue, green and red colors.
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12. A voltaic cell consists of a chromium electrode dipped in a 1.20 M chromium (III) nitrate
solution and a tin electrode dipped in a 0.400 M tin (II) nitrate solution. What is the cell
potential at 298 K?
For a voltaic cell consisting of chromium, an electrode dipped in a 1.20 M chromium (III) nitrate solution and a tin electrode dipped in a 0.400 M tin (II) nitrate solution, the cell potential at 298 K is mathematically given as
Ecell = 0.577 V
What is the cell potential at 298 K?Generally, the equation for the Oxidation and Reduction is mathematically given as
Cr(s) ------------------ Cr+3(aq) + 3e- ] x 2 ...O
Sn+2(aq) + 2e- ------------ Sn(s) ] x 3 ...R
Reaction
2 Cr(s) + 3 Sn+2(aq) --------------- 2 Cr+3(aq) + 3 Sn(s)
Therefore
Eicell = - 0.14 - ( - 0.74)
Eicell = 0.60
In conclusion
[tex]Ecell= E0cell - \frac{0.0591}{n} * \frac{log[Cr+3]^2}{ [ Sn+2]^3}[/tex]
[tex]Ecell = 0.60 - \frac{0.0591 }{6} \frac{log( 1.20)^2}{ ( 0.200)^3}[/tex]
Ecell = 0.577 V
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What is a calcite?
1. mineral
2. erosion
3. marble
4. aragonite
I had no idea what subject I have to put it on. 0_0
HELP ASAP
Answer: 1. Mineral
Explanation:
Calcite is a "white or colorless mineral consisting of calcium carbonate" (Oxford Languages).
By this definition, the answer to your question is option 1.
The image attached is from geology.com and is a picture of calcite.
Explain your reasoning for your formula prediction for Ba+2 and S-2. A neutral molecule requires equal numbers of cations and anions. Atoms will not combine unless their ions have an equal but opposite charge. The total charge of cations plus anions must equal zero. all of the above
Answer:
BaS would be a stable neutral molecule!
Reason:- All of the above.
Explanation:
In order to form a neutral molecule it's necessary to balance their charge first, The given components i.e. Ba2+(cation) and S2-(anion) have equal and opposite charges, when they combine they form predominantly ionic compound i.e. Sulphur partly shares it's 2 electrons with Barium and forms Barium sulphide.
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If I react 6 units of AB with 10 units of CD in the equation below, what is the limiting reactant? 3AB + 4CD --> 2AD + 6CB
If 6 units of AB were reacted with 10 units of CD in the described equation, the limiting reactant would AB
Limiting reactantsThey are reactants that determine how far a reaction can go in terms of yield.
From the equation: 3AB + 4CD --> 2AD + 6CB
The mole ratio of AB to CD is 3:4
Thus, 6 units of AB will require 8 units of CD.
But 10 units of CD were reacted with only 6 units of AB. This means that CD is in excess by 2 units while AB will limit the yield of the reaction.
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What do the dots within a lewis of a bonded molecule represent?
Take a example of water
A lone pair is present over 0Attached structure
The measurement 0.41006 gram, rounded to four significant figures, is expressed as... 1) 0.4100 g
2) 0.410 g
3) 0.41 g
4) 0.4101 g
Answer:
option B = 0.410 g
Explanation:
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How many grams are in 4.25 moles of NiS?
Answer:
386.75 grams
Explanation:
You can use dimensional analysis to help you solve for this question
1. set up a proportion
x grams
4.25 mol x x mole
2. to find the amount of grams/mol that are in NiS we find the gram formula mass (mass of all the atomic masses of each element)
Ni- 59 grams
S- 32 grams
add these together and you get 91 g/mol
3. now plug in the values and multiply across
91 grams
4.25 mol x 1 mole
when you multiply across this is equal to 386.75 grams
A rubber ball is held 4.0 m above a concave spherical mirror with a radius of curvature of 1.5 m. At time equals zero, the ball is dropped from rest and falls along the principal axis of the mirror. How much time elapses before the ball and its image are at the same location?
The time elapsed when the ball placed above the concave mirror and the image formed would be at the same location is 0.55 s.
Image distanceThe position of the image formed is determined using the followimg mirror formula;
[tex]\frac{1}{f} = \frac{1}{v} + \frac{1}{u}[/tex]
where;
f is the focal length of the mirrorv is the image distanceu is the object distancef = R/2
f = 1.5/2
f = 0.75 m
When the ball and its image is in the same position, u = v
The position of the ball is calculated as;
[tex]\frac{1}{f} = \frac{1}{u} + \frac{1}{u} \\\\\frac{1}{f} = \frac{2}{u} \\\\u = 2f\\\\u = 2(0.75)\\\\u = 1.5 \ m[/tex]
Time of motion of the ballThe time taken for the ball to travel the caluclated distance is determined as;
h = ut + ¹/₂gt²
1.5 = 0 + ¹/₂(9.8)t²
1.5 = 4.9t²
t² = 1.5/4.9
t² = 0.306
t = 0.55 s
Thus, the time elapsed when the ball and its image are at the same location is 0.55 s.
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Which part of the water cycle helps to cool the temperature the most?
runoff
infiltration
rainfall
evaporation ( Science )
Which statement best summarizes the way the sun produces energy?
A. Combustion reactions in the sun release large amounts of chemical energy.
B. Fusion reactions in the sun release large amounts of chemical energy.
C. Combustion reactions in the sun convert small amounts of matter into large amounts of energy.
D. Fusion reactions in the sun convert small amounts of matter into large amounts of energy.
Answer: D. Fusion reactions in the sun convert small amounts of mayter into large amounts of energy.