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Chemistry High School

Write the proper word equation to express the following chemical reaction: 4Fe (s) + 3Sn(NO3)4 (aq) Imported Asset 4Fe(NO3)3 (aq) + 3Sn

2 months ago

Solution 1

Guest #3042

2 months ago

The proper word equation for

4Fe + 3Sn(NO3)4 = 4Fe(NO3)3 + 3Sn is as below

Iron + Tin (iv) nitrate = iron(iii) nitrate + Tin

iron displaces tin from it compound ( Tin (iv) nitrate to form iron (iii) nitrate and tin.

from the equation above 4 moles of Fe displaces 3 moles of Sn(NO3)4 to form 4 moles of Fe(NO3)3 and 3 moles of SN

📚 Related Questions

Question

how many parts per million of mercury are there in a sample of tap water with a.mass of 750 g containing 2.2 mg of hg

Solution 1

Parts Per Million is defined as the number of parts of a solute per one million parts of a solution.

ppm = (Weight of Solute / Weight of Solution) × 10⁶

Data Given;
Weight of Solute (Hg) = 2.2 mg = 0.0022 g

Weight of Solution (Tap Water) = 750 g

Putting Values,

ppm = (0.0022 g / 750 g) × 10⁶

ppm = 2.93 × 10⁻⁶ × 10⁶

ppm = 2.93

Result:
It means if given tap water is containing 1 million particles then 2.93 particles in that are of Hg.

Question

2) Pick the statement about the Bohr model of the hydrogen atom that is NOT true. A) The energy of each Bohr orbit is quantized. B) An electron in a stationary state does not emit radiation. C) When an electron jumps to a higher state, energy is absorbed. D) When an electron jumps from one state to another, the electron must gain or lose just the right amount of energy to actually travel the distance between the orbits.

Solution 1

Answer: When an electron jumps from one state to another, the electron must gain or lose just the right amount of energy to actually travel the distance between the orbits.

Explanation:

Bohr in his structure of atom explained that protons which are positively charged particles and neutrons which are neutral particles, are contained in the center of an atom called as nucleus.

The electrons which are negatively charged particles revolve around the nucleus in fixed orbit or shell or energy levels which are termed as quantized. These energy levels are stable and are stationary along with different energy value. The electron remains in the state until energy is absorbed or released.

The electrons absorb energy when it moves from lower energy state to higher energy state. The electrons lose energy when it moves from higher energy state to lower energy state and thus emit radiations corresponding to the energy gap.

Thus the statement when an electron jumps from one state to another, the electron must gain or lose just the right amount of energy to actually travel the distance between the orbits is incorrect because energy is absorbed when electron jumps from one state to another.

The energy is lost when electron falls from one state to another.

Solution 2

Answer: An electron in a stationary state does not emit radiation

Explanation:

I put that on usa test prep and it says correct. the other person who answered this is wrong

Question

Can producers function without sunlight? Why or Why not?

Solution 1

The answer is no because producers need the energy from the sun in order to produce. Hope this helped!

Question

Dalton theorized that matter is made of tiny, indivisible particles called atoms. In what way did the theories of each of these scientists support or differ from Dalton's theory? K/U (a) J. J. Thomson (b) Ernest Rutherford (c) James Chadwick

Solution 1

Electrons are scattered in an atom which was given by J.J Thomson in his plum pudding model. J. J. Thomson, Ernest Rutherford and James Chadwick all supported the Dalton's model.

What are Postulates of Dalton's atomic theory?

Dalton's atomic theory was regarding atoms. Following are the postulates of Dalton's atomic theory

a) Atom are indivisible and are the smallest unit of any matter.

b) Atoms of same element have same mass.

c) Atoms of different elements differ in mass.

d) Elements combines with each other in whole number to form compounds.

Thomson matched the atomic structure to the water melon. The red part is positively charged and black seeds are the electrons embedder in that. Rutherford told that atom consist of nucleus and electrons revolves around the nucleus. Chadwick discovered the neutron that is present in the ucleus.

Therefore, J. J. Thomson, Ernest Rutherford and James Chadwick all supported the Dalton's model.

To know more about Dalton's atomic theory, here:

brainly.com/question/11855975

#SPJ2

Solution 2

A. J.J. Thomson hope this helps

Question

Which substance is insoluble and floats in water? A) Ice shavings B) Wood shavings C) Salt crystals D) Sugar crystals

Solution 1

Wood shavings will float

Question

Which substance is insoluble and floats in water? A) Ice shavings B) Wood shavings C) Salt crystals D) Sugar crystals

Solution 1

Answer: B) Wood Shavings

Reason/Explanation:
Notice what options A, C, and D have on common. Ice, salt and sugar. Those are all dissolvable. Insoluble means un-able to dissolve. It can't dissolve. Wood shavings can't dissolve in water. They will just float. Sugar, salt and ice will all dissolve. Wood shavings won't.

-DustinBR

Solution 2

Hello, Reggie my name is Charlie.
This question is about physical science/or chemistry.
Incorrect answer is A/C/and D.
Correct answer is B.
Wood shavings is a substances it insoluble and it floats to the water, ocean, and lake.
Hope it helped you.
-Charlie

Question

You are investigating the scene of a crime. The victim has been shot, what factor would indicate that it is a homicide rather than a suicide? A) damage to the bullet B) the caliber of the bullet C) bullet passed through the victim's body D) lack of gunshot residue on victim's clothing

Solution 1

D is the correct answer it is man

Solution 2

I will assume it's D. Caliber and damage of the bullet does not matter, anyone can kill themselves with a shotgun or a .22 caliber, it does not matter, and where the bullet passed through the body or did not doesn't matter either. If someone was shot from afar, there wouldn't be any bullet residue on them.

Question

A gas expands from a volume of 2.00L at 36.0oC to a volume of 2.50 L, what is the final temperature, if the pressure is constant?

Solution 1

The final temperature is 45.45 Celcius

Explanation:

The Combined Gas Law:

The combined gas law allows to derive relationships between the variable that undergoes like pressure, temperature and volume.

$\frac{P_1V_1}{T_1} =\frac{P_2V_2}{T_2}$

It is given thatpressure is constant so,

$P_1=P_2$

Hence combined gas law becomes,

$\frac{ V_1}{T_1}=\frac{V_2}{T_2}$

Substituting the values given in the question,

$\frac{2.00}{36}=\frac{2.50}{T_2}$

$0.055=\frac{2.50}{T_2}$

$T_2=\frac{2.50}{0.055}$

$T_2$ =45.45 C

Solution 2

We shall consider V, the volume and T, the temperature.
According to Boyle's Laws:
$\frac{V1}{T1} = \frac{V2}{T2}$
In our case:
$\frac{2.00}{36.0} = \frac{2.50}{T2} =\ \textgreater \ T2= \frac{2.50*36.00}{2.00} = 45$

Question

Gas in a balloon occupies 3.3 L. What volume will it occupy if the pressure is changed from 100.0 kPa to 90.0 kPa (at constant temperature).

Solution 1

Since the temperature is a constant, we can use Boyle's law to solve this.

Boyle' law says "at a constant temperature, the pressure of a fixed amount of an ideal gas is inversely proportional to its volume.

P α 1/V ⇒ PV = k (constant)

Where, P is the pressure of the gas and V is the volume.

Here, we assume that the gas in the balloon is an ideal gas.

We can use Boyle's law for these two situations as,
P₁V₁ = P₂V₂

P₁ = 100.0 kPa = 1 x 10⁵ Pa
V₁ = 3.3 L
P₂ = 90.0 x 10³ Pa
V₂ =?

By substitution,
1 x 10⁵ Pa x 3.3 L = 90 x 10³ Pa x V₂
V₂ = 3.7 L
Hence, the volume of gas when pressure is 90.0 kPa is 3.7 L.

Question

A 5.00 L sample of helium at STP expands to 20.0 L. What is the new pressure on the gas?

Solution 1

Answer is: the new pressure on the gas is 0.25 atm or 25.33 kPa.
Boyle's Law: the pressure volume law - volume of a given amount of gas held varies inversely with the applied pressure when the temperature and mass are constant.
p₁V₁ = p₂V₂.
1 atm · 5.00 L = p₂ · 20.0 L.
p₂ = 1 atm · 5 L ÷ 20.0 L.
p₂ = 0.25 atm, but same amount of helium.

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