When 35 mL of 0.92 M sulfuric acid reacts with excess aluminum, approximately 0.823 L of hydrogen gas is formed at 23 °C and a pressure of 745 mm Hg.
To determine the volume of hydrogen gas formed, we need to use the ideal gas law equation:
PV = nRT
Where:
P = pressure of the gas (in atm)
V = volume of the gas (in liters)
n = number of moles of gas
R = ideal gas constant (0.0821 L·atm/(mol·K))
T = temperature (in Kelvin)
Convert the given pressure to atm:
745 mm Hg * (1 atm / 760 mm Hg) = 0.9797 atm
Convert the given volume to liters:
35 mL * (1 L / 1000 mL) = 0.035 L
Calculate the number of moles of hydrogen gas produced.
From the balanced equation:
2 Al + 3 H₂SO₄ → Al₂(SO₄)₃ + 3 H₂
We can see that 3 moles of hydrogen gas are produced for every 3 moles of H₂SO₄.
Given that the concentration of sulfuric acid is 0.92 M and the volume used is 35 mL, we can calculate the number of moles of H₂SO₄ used:
moles of H₂SO₄ = concentration * volume
moles of H₂SO₄ = 0.92 M * 0.035 L = 0.0322 moles
Therefore, the number of moles of hydrogen gas produced is also 0.0322 moles.
Then convert the temperature to Kelvin:
23 °C + 273.15 = 296.15 K
Plug the values into the ideal gas law equation to find the volume of hydrogen gas:
PV = nRT
(0.9797 atm) * V = (0.0322 mol) * (0.0821 L·atm/(mol·K)) * (296.15 K)
Solving for V:
V = (0.0322 mol) * (0.0821 L·atm/(mol·K)) * (296.15 K) / (0.9797 atm)
V ≈ 0.823 L
Learn more about ideal gas law: https://brainly.com/question/12624936
#SPJ11
for 50 points!! im having a bit of trouble haha
Answer:
answer 16.1.) bohr model used to predict bonding abilities2.) electrical charge attraction holds atom together3.) valence electrons are outermost electrons4.) electron cloud - where electrons are foundanswer 17.falsebecause atomic number are numbers of protons
What type of energy does photosynthesis turn energy from the sun into?
Explanation:
it turn into chemical energy
Question 8
Using Henry's Law: Sz/P1-S2/P2
To increase the solubility of a gas at constant temperature and 202kPa pressure from
0.85g/L to 5.1g/L, the pressure would have to be increased to:
A.505kPa
B.17.2kPa
C.606kPa
D.1212kPa
Answer:
D
Explanation:
plug the numbers
The melting of metamorphic or igneous rock forms what substance? How? Why?
Answer: Metamorphic rocks form by recrystallization of either igneous or sedimentary rocks,
Explanation:
MARKING BRAINLIEST
options: Tempature
solid
melting point
time
condensation point
gas
freezing point
liquid
boiling point
Answer:
I LIKE TRAINS
Explanation:
SNAILS ARE YUMMY
which of the substance changes when it is heated
A . mass
B . volume
C . weight
D . brass
Answer:
mass
Explanation:
Answer:
The answer is C.
Explanation:
If you have absolutely identical objects that have the same weight exactly when they are at the same temperature, then when one object is heated, it will weigh more.
Hope this helps :)
-ilovejiminssi♡
Which of the following ideas is NOT accepted as true according to today’s atomic theory?
a. Atoms are the basic unit of matter
b. Electrons move in circular
paths around the nucleus
c. Protons, electrons, and neutrons are smaller than the atom
d.The nucleus has charged and uncharged particles
Answer:
D
Explanation:
What does the illustration indicate?
Answer: A
Explanation:
Fill in the blank...
Each element is made up of only one kind of ________
How is wind energy more environmental friendly than heat energy?
Answer:
Wind is an emissions-free source of energy
Overall, using wind to produce energy has fewer effects on the environment than many other energy sources. Wind turbines do not release emissions that can pollute the air or water (with rare exceptions), and they do not require water for cooling.
Explanation:
The process by which organisms makes more
organisms like themselves is called
Answer:
Reproduction
Explanation:
Reproduction is the biological process by which new “offspring” (like organisms) are produced from their “parents" (the original organism)
Bill is experimenting with two simple machines. How will he know which
machine is more efficient?
O It will use less force to do the same amount of work.
O It will use more force to do the same amount of work.
O It will be lighter and stronger than the other simple machine.
It will not be possible to tell which simple machine is more efficient.
Anyone know how to do this?
Answer:I can’t see the question
Explanation:
1) Write the symbol and charge for each individual ion
2) Balance the charge so that they equal to zero
3)Write the formula based on how many of each ion you used in step 2
6) Nitrogen and Barium
7) strontium and fluorine
8) iodine and calcium
9) magnesium and sulfur
10) Sulfur and aluminum
N -3
Ba +2
Sr +2
F -1
I -1
Ca +2
Mg +2
S -2
S -2
Al +3
//
Ba3N2
SrF2
CaI2
MgS
Al2S3
//
I don't really understand 2.
what is biopolymer ?
Answer:
Biopolymers are natural polymers produced by the cells of living organisms. Biopolymers consist of monomeric units that are covalently bonded to form larger molecules. There are three main classes of biopolymers, classified according to the monomers used and the structure of the biopolymer formed: polynucleotides, polypeptides, and polysaccharides.
Explanation:
¿Qué es la ciencia? ¿Qué importancia tiene la ciencia para el desarrollo de la humanidad y de la vida? AYUDA PORFAAAAAAAA
Explanation:
La ciencia puede entenderse como una forma que el ser humano encontró para adquirir conocimientos a través de métodos científicos, tecnológicos y basados en estudios, pruebas e investigaciones y no basados en el pensamiento para explicar los fenómenos humanos, de la naturaleza y de la vida.
La ciencia tiene un rol impactante y transformador en la sociedad, todo el conocimiento adquirido por el hombre a través de la ciencia ha transformado para mejor la vida de las personas, generando mayor calidad de vida, salud, educación, sentido crítico, etc.
En el escenario pandémico que vive el mundo actualmente, la ciencia es fundamental, a través de sus estudios e investigaciones que han ayudado en el desarrollo de vacunas efectivas para inmunizar a los humanos contra el virus y salvar vidas.
where did all the elements in the universe come from?
Answer:
Wal-mart XDDDDD
Explanation:
how can u launch make the model spacecraft move without touching it
Answer:
How can the launcher make the model spacecraft move without even touching it? ...
Magnetic forces can attract or repel objects at a distance. ...
They explore attracting and repelling forces with magnets and with the simulation. ...
Magnetic forces can convert potential energy stored in the magnetic field to kinetic energy.
Explanation:
The launcher can launch the model spacecraft by exerting a magnetic force.
Magnetic force is a force just like gravity that can act across a distance without touching the object that is attracted by it. It should be noted that magnetic attraction is a pulling force.
Therefore, since the launcher wants to make the model spacecraft move without touching it, a magnetic force should be exerted on it. The magnetic force can act as the distance that's required for the objects to move.
Read related link on:
https://brainly.com/question/17378094
How many calories of heat are required to raise the temperature of 225g of water from 10.5°C to 43.7°C
HELP!!!!!!!!
One use of CaCl 2 to salt roads in the winter. The equation that describes the change in freezing point of a solvent due to a solute is T f =i x K f x molality. How much would the freezing point decrease if a 3.23 molal (m) solution were achieved? (K f =1.86^ C/(mol/kg) for water and i = 3 for CaCl 2 )
Answer:
On contact with ice, calcium chloride forms brine rapidly, which lowers the freezing point of water and melts snow and ice quickly. Calcium chloride forms brine faster than other ice melters because its hygroscopic properties actually cause it to attract moisture from its surroundings
Explanation:
HOPE IT WILL HELP YOU
I need help I'll mark you as Brainliest
Answer: c
Explanation:
Question pic
(Will make brainliest)
Answer:
c
Explanation:
Answer:
a and c
Explanation:
How is humility related to air pressure
Answer: Edmentum question:
The following graph shows the barometric pressure over the course of the day in Bellingham. What effect will this trend likely have on cloud cover and precipitation over the city?
a scatter plot showing the barometric pressure of an area, with air pressure on the y-axis and time on the x-axis
Explanation: edmentum answer:
In the graph, barometric pressure is decreasing. The drop in pressure represents a low-pressure system. This type of system will cause an increase in cloud cover and precipitation.
3- Given 90.0 g C6H1206
a- How many moles of Glucose are present in 90.0 g of glucose?
molar mass = 180.18
//
[tex]90.0 \: g \times \frac{1 \: mol}{180.18 \: g} = 0.4995004995 \: mol[/tex]
[tex] = 0.500 \: mol[/tex]
A permanent alteration in the DNA sequence that makes up a gene is called am
Mutation
Germline
Meiosis
Evolution
Answer:
Gene mutation
Explanation:
A gene mutation is a permanent alteration in the DNA sequence that makes up a gene, such that the sequence differs from what is found in most people. Mutations range in size; they can affect anywhere from a single DNA building block base pair to a large segment of a chromosome that includes multiple genes
Look at the image below:
Pain Reyne
Ben Francia
Les Trans
01 Juan Bautista
Pents
SAN
PEAS FAULT
NORTH AMERICAN PLATE
CIRC PLATE
Carina
What type of plate boundary is shown here?
O convergent
divergent
transform
Answer:
Transform
see image below:
You start with 100mL of 14M HNO3 and 10grams of copper metal. How many moles of the nitrogen dioxide gas will be produced?
Answer:
0.316 moles are produced.
Explanation:
We state the redox reaction:
4HNO₃ + Cu → Cu(NO₃)₂ + 2NO₂ + 2H₂O
We need to determine the limting reactant:
0.1 L . 14 M = 1.4 moles
10 g . 1mol/ 63.54g =0.158 mol
Cu is the limiting reactant. Let's see
4 moles of acid need 1 mol of Cu to react
1.4 moles of acid may react to (4 . 1) / 1.4 = 0.35 moles
We do not have enough Cu.
1 mol of Cu can produce 1 mol of NO₂
Then 0.158 moles will produce, 0.316 moles. (double of moles)
If we see stoichiometry, ratio is 1:2
lithium electron configuration
Answer:
Dalam fisika atom dan kimia kuantum, konfigurasi elektron adalah susunan elektron-elektron pada sebuah atom, molekul, atau struktur fisik lainnya. Secara formal, keadaan kuantum elektron tertentu ditentukan oleh fungsi gelombangnya, yaitu sebuah fungsi ruang dan waktu yang bernilai kompleks.
#semogamembantu
What is the most basic level of biological organization?
Question 1 options:
Organism
Cell
Molecule
Atom
Answer:
molecule
Explanation:
Answer:
c
Explanation:
What type of weathering creates a granite Tor?
Physical or
Chemical or
Biological
Answer:
Physical
Explanation:
Physical weathering is defined as the geological process in which rocks are broken down but there is no change in their chemical composition.
Granite tor are the rock masses above the ground surface which are associated with granites
Granite Tor is an example of physical weathering as they formed by freeze–thaw weathering. Granite tor are formed when magma present in the crust cools down and form batholith. Rocks above batholith gets erodes and left the batholith to expose.
Hence, the correct answer is "Physical weathering'.