1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Yuliya22 [10]
2 years ago
5

4.

Chemistry
2 answers:
Rama09 [41]2 years ago
7 0

Answer:

\boxed {\boxed {\sf 426 \ mL}}

Explanation:

We are asked to find the volume of ammonia gas given a change in pressure. We will use Boyle's Law, which states the volume of a gas is inversely proportional to the pressure of a gas. The formula is:

P_1V_1= P_2V_2

The ammonia gas originally occupies a volume of 450 milliliters at a pressure of 720 millimeters of mercury. Substitute the values into the formula.

450 \ mL * 720 \ mm \ Hg = P_2V_2

The pressure is changed to standard atmospheric pressure, which is 760 millimeters of mercury. The new volume is unknown.

450 \ mL * 720 \ mm \ Hg = 760 \ mm \ Hg * V_2

We are solving for the volume at standard pressure. We will need to isolate the variable V₂. It is being multiplied by 760 millimeters of mercury. The inverse of multiplication is division. Divide both sides of the equation by 760 mm Hg.

\frac {450 \ mL * 720 \ mm \ Hg }{760 \ mm \ Hg}= \frac{760 \ mm \ Hg * V_2}{760 \ mm \ Hg}

\frac {450 \ mL * 720 \ mm \ Hg }{760 \ mm \ Hg}= V_2

The units of millimeters of mercury (mm Hg) cancel.

\frac {450 \ mL * 720  }{760} = V_2

\frac {324,000}{760} \ mL = V_2

426.3157895 \ mL =V_2

The original values of volume and pressure have 3 significant figures. Our answer must have the same. For the number we calculated, that is the ones place. The 3 in the tenths place tells us to leave the 6 in the ones place.

426 \ mL \approx V_2

The volume at standard atmospheric pressure is approximately <u>426 milliliters. </u>

True [87]2 years ago
3 0
P1V1 = P2V2

P1 = 720 mmHg
V1 = 450. mL
P2 = 760 mmHg (this is the pressure at STP)

Use these to solve for V2:
(720)(450) = 760V2

V2 = 426 mL
You might be interested in
A student is building an electrical circuit.
Savatey [412]

Answer:

A a metal such as copper

Explanation:

5 0
3 years ago
Read 2 more answers
Drag the tiles to the correct boxes to complete the pairs.
dezoksy [38]
What is the question?
7 0
2 years ago
What is the chemical equation for boiling a egg?
Nostrana [21]
Because an egg is an entire biological structure, made up of a mixture of chemicals rather than a single pure chemical compound, there is no one chemical formula to describe it. However, the basic structure and chemistry of an egg is highly conserved and varies little from species to species.
6 0
3 years ago
1. organisms of different species that share similar characteristics most likely have..
SSSSS [86.1K]

Answer:

1. Parents from both species.

2. Because of natural selection.

Explanation:

6 0
3 years ago
Determine the number of charged particles in nucleus of calcium atom then deduce the number of electrons
Dafna1 [17]

Answer:

detail is given below.

Explanation:

The charged particles of nucleus are protons while neutrons are neutral having no charge.

We know that an atom consist of electrons, protons and neutrons. Neutrons and protons are present inside the nucleus while electrons are present out side the nucleus.

Electron has a negative charge and is written as e⁻. The mass of electron is 9.10938356×10⁻³¹ Kg . While mass of proton and neutron is 1.672623×10⁻²⁷Kg and 1.674929×10⁻²⁷ Kg respectively.

Symbol of proton= P⁺  

Symbol of neutron= n⁰  

The number of electron or number of protons are called atomic number while mass number of an atom is sum of protons and neutrons.

one proton contribute 1 amu to the total weight. There are 20 protons and 20 neutrons in Ca thus its atomic mass is 40 amu.

While the atomic number is 20.

3 0
2 years ago
Other questions:
  • I. Loosening of immigration policies
    9·1 answer
  • Calculate the density of a sample if the mass is 2.98g and the volume is 2.12l
    10·1 answer
  • An undergraduate weighed out 20grams of sodium hydroxide pellets. If Na =23, O = 16 andH = 1, What is the mole of this sodium hy
    7·1 answer
  • The physical properties of a solution and the properties of the individual components are
    11·2 answers
  • In an energy pyramid, which level has the most available energy?
    10·1 answer
  • Rewrite each equation below with the delta H value included with either the reactants or the products and identify the reaction
    5·1 answer
  • A boy inflated a bunch of balloons while he was outside with an ambient temperature of 26oC. He then took the balloons inside hi
    11·1 answer
  • Every conversion factor is a ratio that is<br> equal to 1<br> less than 1<br> greater than 1
    12·1 answer
  • Under which condition is light produced with respect to the hydrogen spectrum? O Protons absorb energy as they move to an excite
    8·2 answers
  • You have samples of the following metals of equal mass, which has the largest volume? Copper, density = 8.92 g/mL Mercury, densi
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!