Predict what happens when tin metal is placed into
a solution of nickel(II) iodide.
A. Tin(II) iodide forms
B. Tin metal dissolves
C. Nothing
D. Both a and b happen
E. Nickel is plated onto tin
Answer:
I would say A but I'm not sure
When tin metal is placed into a solution of nickel (II) iodide then nothing will occur.
What is reactivity series?Reactivity series of the metals tells about the increasing or decreasing orders of the reactivity of the metals.
According to the reactivity series, reactivity of nickel metal is more than the tin metal. So, if we add tin metal in the solution of nickel (II) iodide then no reaction occurs. Because the reactivity of tin is less as compare to nickel metal so it is not possible for tin to replace the nickel metal and get dissolve.
Hence, option (C) is correct i.e. nothing.
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PLZ HELP! QUESTION IS BELOW! :D
Answer:
Explanation:
When we say anything is a wave, what exactly do we mean? The most intuitive and straightforward wave to envision is a water wave. A motion, more specifically, is a disturbance that propagates or travels away from its source. Water waves are caused by a disruption in the water's surface, such as a rock tossed into a pond or a swimmer splashing the surface continuously. The noise for sound waves is a rise of air pressure, which may be caused by the oscillating cone within a speaker. There are many kinds of disturbances in earthquakes, including surface disturbances and pressure disturbances under the surface. Even radio signals are best deciphered by using a comparison of sea waves Water waves are helpful to visualize since they are more than just a mental picture. The amplitude, period, frequency, and energy of water waves are all the same as they are for all waves. A small set of underlying principles can be used to describe all wave characteristics.
(hope this helps can i plz have brainlist :D hehe)
Write a balanced equation for each reaction. KOH(aq) + H3PO4,(aq)
Answer:
3 KOH(aq) + H3PO4(aq) = K3PO4(aq) + 3 H2O
Explanation:
A steel bottle contains nitrogen gas at STP. What is the final pressure if the temperature is changed to 155°C?
Answer:
Option D
Explanation:
As we know at
PV = nRT
at STP,
Pressure is 1 atm and temperature is 273 K
[tex]\frac{P_2}{P_1} = \frac{T_2}{T_1} \\P_2 = 1*(428 )/273\\P_2 = 1.567[/tex]
Hence, option D is correct
HURRY WILL GIVE BRAINLIETS How are proteins and nucleic acids related? They both provide energy. They both carry genetic information. The structure of proteins is determined by nucleic acids. The subunits of nucleic acids are also the subunits of proteins.
Answer: the answer is “C”
Explanation:
Took the T E S T
9. Which indicator would show a pH change from 6 to 7?
Phenol red indicator
Blue litmus indicator
Red litmus indicator
Methyl red indicator
Will give brainliest!!!!
Answer:
hi
Explanation:
because
what is the formula for chlorine monobromide
Based on how to wrire chemical formulae, the formula for chlorine monobromide is BrCl.
What is chlorine mononbromide?Chlorine monobromide is a covalent compound formed from the covalent combination of chlorine and bromine.
The covalent bond is formed from the sharing of electrons between atoms chlorine and bromine.
Br2 + Cl2 ---> 2 BrCl
Tye formula of chlorinr monobromide is BrCl.
It is also known as bromine monochloride.
Therefore, the formula for chlorine monobromide is BrCl.
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Which statement below is false when 10 g of nitrogen reacts with 5.0 g of hydrogen to produce ammonia?
N2 (g) + 3 H2 (g) → 2 NH3 (g)
Answer:
The theoretical yield of ammonia is 15 g.
Explanation:
The statements are:
2.8g of hydrogen are left over.
Hydrogen is the excess reactant.
Nitrogen is the limiting reactant.
The theoretical yield of ammonia is 15 g.
To solve this question we must find the moles of each reactant. Thus, we can find the limiting reactant. With limitinf reactant we can find the theoretical yield and the amount in excess of the reactant that is in excess:
Moles Nitrogen -28g/mol-
10.0g * (1mol / 28g) = 0.357 moles
Moles hydrogen -2g/mol-
5.0g * (1mol / 2g) = 2.5 moles
For a complete reaction of 0.357 moles of nitrogen are required:
0.357mol N2 * (3mol H2 / 1molN2) = 1.071 moles hydrogen.
As there are 2.5 moles of hydrogen, hydrogen is the excess reactant and nitrogen is the limiting reactant
The moles of hydrogen that are left over are:
2.5moles - 1.071moles = 1.429moles Hydrogen
The mass is:
1.429moles Hydrogen * (2g / mol) = 2.8g of hydrogen are left over
The moles of ammonia produced are:
0.357mol N2 * (2mol NH3 / 1molN2) = 0.714 moles of ammonia are produced (Theoretical moles)
The theoretical mass is (Molar mass NH3 = 17g/mol):
0.714 moles of ammonia * (17g / mol) =
12g of ammonia is the theoretical mass
The false statement is:
The theoretical yield of ammonia is 15 g.The false statement, when 10 g of nitrogen reacts with 5.0 g of hydrogen to produce ammonia is that the theoretical yield of ammonia is 15g.
How moles is calculated?Moles of any substance will be calculated as:
n = W/M, where
W = given mass
M = molar mass
Given chemical reaction is:
N₂(g) + 3 H₂(g) → 2 NH₃(g)
Moles of 10g of N₂ = 10/28 = 0.357 moles
Moles of 5g of H₂ = 5/2 = 2.5 moles
From the stoichiometry of the reaction:
1 mole of N₂ = react with 3 moles of H₂
0.357 moles of N₂ = react with 3×0.357=1.071 moles of H₂
Here nitrogen is the limiting reactant and hydrogen is excess reactant, and formation of ammonia depends on the limiting reactant.
1 mole of N₂ = react with 2 moles of NH₃
0.357 moles of N₂ = react with 2×0.357=0.714 moles of NH₃
Now we calculate the mass of ammonia from the given moles as:
M = (0.714) (17) = 12 g.
Hence, the false statement is that theoretical yield of ammonia is 15g.
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What gas in the air is used by plants to make their own food? (2 points)
Nitrogen
Water vapor
Carbon dioxide
Oxygen
Answer:
Carbon Dioxide
Explanation:
Carbon dioxide gets turned into oxygen
Which of the following elements has the largest atomic number?
O tellurium (Te)
lodine (0)
Otin (5)
O antimoney (5b)
Answer:
iodine is 53
tellurium is 52
antimony is 51
Otin Is 50
Explanation:
Dos objetos presentan fuerzas eléctricas repulsivas entre sí. ¿Cómo pueden ser las cargas eléctricas de estos objetos?
Answer:
Las cargas eléctricas de los objetos son ambas positivas o son ambas negativas.
Explanation:
Si dos objetos presentan fuerzas eléctricas repulsivas entre sí, quiere decir que ambos tienen el mismo tipo de carga.
Las cargas iguales (positivo con positivo, o negativo con negativo) se repelen, mientras que las cargas diferentes (positivo con negativo) se atraen.
Pt3 science......
Select correct answer ♡ !
Answer:
Neon
(if you want a thorough explanaion, just ask for one)
It is C! <3
The reason it's C because pt3 is Sugar science name get it?
Explain what helps convert non-rich oxygen blood cells back to oxygen rich cells?
Answer:
As blood travels through the body, oxygen is used up, and the blood becomes oxygen poor. Oxygen-poor blood returns from the body to the heart through the superior vena cava (SVC) and inferior vena cava (IVC), the two main veins that bring blood back to the heart.
Explanation:
Can someone help me ❤️❤️❤️
Answer:
i think the answer would be C
Explanation:
no matter what you do to the jar the mass will stay the same. unless you add more nails
Why do you think the same color M&M was used in each sample of water?
Answer:
The candy coating is made up of coloring and sugar. The coloring and the sugar molecules both have positive and negative charges on them. The water molecule has positive and negative charges so it can attract and dissolve the color and sugar pretty well.
Explanation:
go to https://www.acs.org/content/acs/en/education/whatischemistry/adventures-in-chemistry/experiments/dissolving-m-ms.html#:~:text=The%20candy%20coating%20is%20made,color%20and%20sugar%20pretty%20well.
What is the volume of solution if 2.0 moles of 0.4 M HF are present in the solution?
Answer:
5 L
Explanation:
Molarity = mol/L ----> L = mol/molarity
2.0 moles / 0.4 M HF = 5 L
Please help me out
IF YOU POST AN INNCORRECT AWNSER OR A LINK OR RANDOME THINGS I WILL REPORT U OR BAN U .
Answer:
sorry I had never done this before
WILL MARK BRAINLEST
Explain one way that you could lower the amount of trash that your family produces. Be specific in your example. Explain how it will actually lead to a lower amount of trash
Match each scientist to their discovery regarding the atom
Thomson
Electrons have a charge of -1.
Rutherford
Atoms are indivisible
Millikan
Atoms have a positive nucleus
Dalton
Atoms contain electrons.
Answer:
Thomson--atoms cotain electron
Ernest Rutherford--atoms have a positive nucleus
R.A Millikan--electrons have Q=-1
Dalton--atoms are indivisible
Millikan---> Electrons have a charge of -1
Rutherford ---> Atoms have a positive nucleus
Thomson -----> Atoms contain electrons
Dalton --------> Atoms are indivisible
The atomic theory went through several modifications and different scientists proposed various models of the atom until our present conception of the atom was developed.
The atom was first defined as the smallest indivisible particle of a substance. This idea of "indivisibility" of the atom stems from Dalton's theory.
The fact that atoms were composed of negatively charged electrons was proven by the experiments of J.J Thompson using the cathode ray tube. Millikan's charge to mass experiment showed that the electron has a charge of -1.
Rutherford, in his famous gold foil experiment showed that atoms were composed of a positively charged nucleus.
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Monkeys eat insects and plants. What ecological role best describes monkeys
Answer:
scavenger or consumer
Explanation:
they collect and gather fruits, and different wild life
How many moles of mercury(II) oxide, HgO, are needed to produce 125 g of oxygen, O2? How many moles of mercury is produced?
Laughing gas (nitrous oxide, N2O) is sometimes used as an anesthetic in dentistry. It is produced when ammonium nitrate is decomposed according to the following reaction.
NH4NO3(s) ---> N2O(g) + H2O(l) How many grams of NH4NO3 are required to produce 33.0 g N2O? and How many grams of water are produced in this reaction?
Answer: 7.81 mol HgO (How many moles of mercury(II) oxide, HgO, are needed to produce 125 g of oxygen, O2?)
Explanation:
The songs of birds are part of a ritual to attractpotential partners of their own species. The song presents specific patterns recognized only by membersof the same species. What advantage does this present for the species of birds?
Answer:
Explanation:
Bird courtship and mating dances include many unique ways to attract mates. Learn about their courtship behaviors and why they matter. ... When birders recognize courting birds, they can be sure to avoid disturbing ... the charming songs used to woo partners can help distinguish species so birds are sure ...
Calculate the concentration imports per million ppm of DDT if a sample size of 5000 g contained 0.10 g DDT
Answer:
20ppm
Explanation:
parts per million are defined as the mass of solute in mg (In this case, mass of DDT) per kg of sample.
To solve this question we must find the mass of DDT in mg and the mass of sample in kg:
Mass DDT:
0.10g * (1000mg / 1g) = 100mg
Mass sample:
5000g * (1kg / 1000g) = 5kg
Parts per Million:
100mg / 5kg =
20ppmHELP ASAP 10 POINTS
What type of interference caused a "super crest" to form during Young's experiment?
Constructive interference
Doppler interference
Destructive interference
Operational Interference
Answer:
the answer is destructive interference
4. How many molecules are equal to 2.25 moles of sulfur dioxide?
5. How many moles are equal to 2.4 x 1023 particles of sodium chloride?
Answer: 4. We know that one mole of any chemical compound always contains 6.022 x 10^23 molecules. Therefore, we can calculate the number of molecules of 2.25 moles of sulfur dioxide SO2 by multiplying the number of moles by the Avogadro's constant 6.022 x 10^23:
2.25 moles SO2 (6.022x10^23 molecules/1mole) = 1.355 x 10^24 molecules of sulfur dioxide
5. The number of moles of sodium chloride are 0.40 moles
Explanation:
if an EXOTHERMIC reaction takes place in a container, the container will feel
a. hotter
b.colder
c. neither hotter nor colder
For the reaction represented by the equation:
Cl2 + 2KBr → Br2 + 2KCl
how many grams of KCl can be produced from 356 grams KBr?
Answer:
223 g KCl
General Formulas and Concepts:
Atomic Structure
Reading a Periodic TableMolesStoichiometry
Using Dimensional AnalysisAnalyzing reactions RxNExplanation:
Step 1: Define
[RxN - Balanced] Cl₂ + 2KBr → Br₂ + 2KCl
[Given] 356 gg KBr
[Solve] g KCl
Step 2: Identify Conversions
[RxN] 2 mol KBr → 2 mol KCl
[PT] Molar Mass of K - 39.10 g/mol
[PT] Molar Mass of Br - 79.90 g/mol
[PT] Molar Mass of Cl - 35.45 g/mol
Molar Mass of KBr - 39.10 + 79.90 = 119 g/mol
Molar Mass of KCl - 39.10 + 35.45 = 74.55 g/mol
Step 3: Stoichiometry
[DA] Set up conversion: [tex]\displaystyle 356 \ g \ KBr(\frac{1 \ mol \ KBr}{119 \ g \ KBr})(\frac{2 \ mol \ KCl}{2 \ mol \ KBr})(\frac{74.55 \ g \ KCl}{1 \ mol \ KCl})[/tex][DA] Divide/Multiply [Cancel out units]: [tex]\displaystyle 223.024 \ g \ KCl[/tex]Step 4: Check
Follow sig fig rules and round. We are given 3 sig figs.
223.024 g KCl ≈ 223 g KCl
Write a balanced chemical equation based on the following description:
aqueous potassium phosphate reacts with aqueous nickel(II) bromide to
produce solid nickel(II) phosphate and aqueous potassium bromide.
the balanced chemical equation was shown here :
2 K3PO4 (aq) + 3 NiBr2(aq) ------------>> Ni3(PO4)2 (s) + 6 KBr (aq)
The balanced chemical equation when aqueous potassium phosphate reacts with aqueous nickel(II) bromide to produce solid nickel(II) phosphate and aqueous potassium bromide is:
2 K₃PO₄(aq) + 3 NiBr₂(aq) ⇒ Ni₃(PO₄)₂ + 6 KBr(aq)
Let's consider the unbalanced chemical equation that occurs when aqueous potassium phosphate reacts with aqueous nickel(II) bromide to produce solid nickel(II) phosphate and aqueous potassium bromide.
K₃PO₄(aq) + NiBr₂(aq) ⇒ Ni₃(PO₄)₂ + KBr(aq)
We will balance it using the trial and error method.
We will balance Ni atoms by multiplying NiBr₂ by 3.We will balance P atoms by multiplying K₃PO₄ by 2.2 K₃PO₄(aq) + 3 NiBr₂(aq) ⇒ Ni₃(PO₄)₂ + KBr(aq)
We will get the balanced equation by multiplying KBr by 6.
2 K₃PO₄(aq) + 3 NiBr₂(aq) ⇒ Ni₃(PO₄)₂ + 6 KBr(aq)
The balanced chemical equation when aqueous potassium phosphate reacts with aqueous nickel(II) bromide to produce solid nickel(II) phosphate and aqueous potassium bromide is:
2 K₃PO₄(aq) + 3 NiBr₂(aq) ⇒ Ni₃(PO₄)₂ + 6 KBr(aq)
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All of the following contribute to the evolution of a species EXCEPT -
O Respiration
O Adaptations
O Mutations
ONatural selection
Answer:
Respiration
Explanation:
Respiration is the system of how an animal breathes
65 g of NaOH is dissolved to make 500 mL of solution. Find moles of NaPH and Molarity of solution.
Answer:
3.25 M
Explanation:
Number of moles = mass/ molar mass
mass of NaOH = 65 g
Molar mass of NaOH = 40 g/mol
Number of moles of NaOH = 65g/40 g/mol = 1.625 moles
Let us recall that;
n = CV
n = number of moles of solute
C = concentration of solution
V = volume of solution
C = n/V
n = 1.625 moles
V = 500/1000 L = 0.5 L
C = 1.625 moles/0.5
C = 3.25 M