Answer:
V = 0.24 L.
Explanation:
Hello there!
In this case, it is possible to approach this problem by using the ideal gas equation defined by:
[tex]PV=nRT[/tex]
Whereas our unknown is V, volume, and we solve for it as follows:
[tex]V=\frac{nRT}{P}[/tex]
Then since the STP conditions are ate 273.15 K and 1 atm, the volume of 0.011 moles of CO2 gas turns out to be:
[tex]V=\frac{0.011mol*0.08206\frac{atm*L}{mol*K}*273.15K}{1atm}\\\\V=0.24L[/tex]
Regards!
To determine whether Gd-daa3 is selective for Zn2 , researchers compared relaxivity measurements of Gd-daa3 in the presence of different cations. Varying amounts of XCl2 (where X is Zn, Ca, or Mg) were added to a 0.1 mM solution of Gd-daa3 plus 10 mM KCl/10 mM HEPES buffer at pH 7.4. What is the most appropriate control for this experiment
a chemist dissolves 0.564 moles of manganese (IV) oxide (MnO2) in water, and adds enough water to make 0.510 L of solution. Calculate the molarity of the solution.
Answer:
The molarity of the solution is 1.1 [tex]\frac{moles}{liter}[/tex]
Explanation:
Molarity is a measure of the concentration of that substance that is defined as the number of moles of solute divided by the volume of the solution.
The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:
[tex]molarity=\frac{number of moles of solute}{volume}[/tex]
Molarity is expressed in units [tex]\frac{moles}{liter}[/tex]
In this case
number of moles of solute= 0.564 molesvolume= 0.510 LReplacing:
[tex]molarity=\frac{0.564 moles}{0.510 L}[/tex]
Solving:
molarity= 1.1 [tex]\frac{moles}{liter}[/tex]
The molarity of the solution is 1.1 [tex]\frac{moles}{liter}[/tex]
63) How many moles of CaBr
2
are in 5.0 grams of CaBr
2
2.
4.0 x 101 mol
2.5 x 10-2 mol
4.2 x 10-2 mol
1.0 x 10'mol
Answer:
I think it will be the answer
2.5 x 10-2 mol
I hope it help you
2.98 moles of H2 at 35°C and 2.3 atm are in a 32.8 L container. How many moles of H2 are in a 45.3 L container under the same conditions?
Answer:
4.12 moles
Explanation:
We can solve this problem with the Ideal Gases Law.
P . V = n . R . T
In our first case we have:
P = 2.3 atm
V = 32.8 L
n = 2.98 moles
T → 35°C + 273 = 308K
Let's replace data for the second case:
2.3 atm . 45.3L = n . 0.082 . 308K
n = (2.3 atm . 45.3L) / (0.082 L.atm/mol.K . 308K)
n = 4.12 moles
Answer:
4.11 moles of H₂ are in a 45.3 L container under the same conditions.
Explanation:
Avogadro's law establishes the relationship between the amount of gas and its volume when the temperature and pressure are held constant.
This law says that the volume of a gas under conditions of constant temperature and pressure is directly proportional to the number of moles of gas. That is, if the amount of gas is increased, the volume will increase; whereas if the amount of gas is decreased, the volume decreases.
Avogadro's law is expressed mathematically as the quotient between the volume and the amount of gas equal to a constant:
[tex]\frac{V}{n} =k[/tex]
Being 1 the initial conditions and 2 the final conditions, the following is satisfied:
[tex]\frac{V1}{n1} =\frac{V2}{n2}[/tex]
In this case:
V1= 32.8 Ln1= 2.98 molesV2= 45.3 Ln2= ?Replacing:
[tex]\frac{32.8 L}{2.98 moles} =\frac{45.3 L}{n2}[/tex]
Solving:
[tex]n2*\frac{32.8 L}{2.98 moles} =45.3 L[/tex]
[tex]n2=45.3 L*\frac{2.98 moles}{32.8 L}[/tex]
n2= 4.11 moles
4.11 moles of H₂ are in a 45.3 L container under the same conditions.
Differentiate between compounds and mixtures using the particle model of
matter.
Answer:
compounds are substance which can be formed by chemically combining two or more elements.
mixtures are substance that are formed by physically mixing two or more substances
Name the parts of a chemical reaction, and describe both
where is distillation used
Answer:
During separation of substances with different boiling points, fractional distillation is used.
During separation of substances in an eutectic mixture or azeotropic mixture, steam distillation is used.
When the sunlight stikes a leaf on a tree, what form of energy is it transformed to?
Answer:
ATP
Explanation:
Answer:
chemical energy
Explanation:
WHAT IS OZONE.....................
How does it acts as safeguard?
Explanation:
The ozone layer is a natural layer of gas in the upper atmosphere that protects humans and other living things from harmful ultraviolet (UV) radiation from the sun. ... The ozone layer filters out most of the sun's harmful UV radiation and is therefore crucial to life on Earth.
Describe the trends in properties of chlorides across period 3 .Their formula .Their state .Their volatility .Their structure .The ph of aqueous chloride solution
Answer:
See explanation
Explanation:
Period 3 elements include; Na, Mg, Al, Si, P,S,Cl and Ar
Across the period, the chlorides of the elements change from solid to gas. The chlorides of metals are solid while the chlorides of non metals are gaseous.
Also, the chlorides become more volatile across the period. The formulas of the chlorides change from MCl to MCl2 to MCl3 to MCl4, MCl5 and MCl6 respectively across the period where M is a period 3 element.
The pH of the solutions of chlorides of period 3 elements change from neutral to acidic across the period. The pH of the chlorides of metals are neutral while the chlorides of the nonmetals usually yield acid solutions.
someone help me with this please
number of moles of sodium azide
Answer:
0.015382279644614 mole.
Answer:
yes this is the answer for that quaz
How many moles of water are produced if 5.43 mol PbO2 are consumed
Answer:
Then it can be easily concluded that 10.86 moles of water will be produced.
Answer:
10.9
Explanation:
trust i js did the assignment
Add 250.0mL to 5.00mL and round off the answer
Answer:
255mL
Explanation:
(250.0 + 5.00)mL = 255.00mL
255mL
Un gas a una temperatura de 38°C, tienen un volumen de 21 Lts Litros. ¿Qué volumen tendrá si la temperatura sube a 67°C?.
Answer:
. ¿Qué
Explanation:
Hope you have a great day
If potassium is a soft reactive metal at room temperature, name one other element you would expect to also be a soft reactive metal at room temperature? How do you know?
Explanation:
Lithium
Sodium
group one elements are highly reactive
5. Which particle can not be accelerated by the electric
or magnetic fields in a particle accelerator?
A) neutron
B) proton
C) alpha particle
D) beta particle
Answer:
A. neutron
Explanation:
Neutrons cannot be accelerated in an electric or magnetic field because they are neutral in charge.
Substances that have a pH
7 are considered acidic.
Answer:
False because pH value below 7 are considered acidic.
Answer:
Any solution that has a pH of less than 7 is considered acidic, and anything above a pH of 7 is basic .
Explanation:
HELP ME PRETTY PLS PLS HELP ME FAST
Answer:
The producer is the grass, and energy flows from the mouse to both the snake and the owl.
Explanation:
The producer is usually defined as a "Producers, also known as autotrophs, make their own food.". Thus, the grass is the producer of the food web provided.
The energy also flows from the mouse to the snake and the owl, as the mouse has two arrows that lead away from it, leading both to the snake and the owl.
Hope this helps.
What is the percent yield for the reaction below when 544.5 g SO2 and 160.0 g O2 produce 382.0 g SO3? 2SO2(g) + O2(g) 2SO3(g) A. 56.1% B. 54.2% C. 23.9% D. 47.7%
Answer:
Option A.
Explanation:
Balanced equation is:
2SO₂ (g) + O₂(g) → 2SO₃(g)
First of all, we need to determine the limiting reagent. We convert mass to moles:
544.5 g . 1 mol / 64.06g = 8.5 moles of sulfur dioxide
160 g . 1mol / 32g = 5 moles of oxygen
Ratio is 1:2. 1 mol of oxygen needs 2 moles of sulfur dioxide
5 moles of oxygen may react to (5 . 2) /1 = 10 moles of SO₂
We only have 8.5 moles of SO₂ but we need 10 moles. In conclussion limiting reagent is SO₂.
Ratio is 2:2. 2 moles of SO₂ can prdouce 2 moles of SO₃
Then 8.5 moles of SO₂ must produce 3 moles of SO₃
We convert mass to moles, to determine the theoretical yield (100 % yield reaction) → 8.5 mol . 80.06 g /mol = 680.51 g
Formula for percent yield is: (Produced yield / Theoretical yield) . 100
(382 g / 680.51g) . 100 = 56.1 %
Why does water appear blue?
Answer:
Explanation:
Water is blue because water absorbs colors in the red part of the light spectrum. Like a filter, this leaves behind colors in the blue part of the light spectrum for us to see.
the name for the following formula C9H18 should be
O octane
O octene
O nonane
O nonene
how many moles are there in a 3.00M solution when you have 1.78L
HELP ME WITH THIS CHEMISTRY ILL MARK U THE BRAINLYEST
Answer:
pv=nrt solution re solve it
(reply if you know the answer or get reported) How many atoms are there in 5 grams of silicon?
Similarly, for one gram atomic weight of silicon with atomic weight of 28 grams, one mole of silicon still contains 6.022 × 1023 silicon atoms.Answer:
Explanation:
hope it helps
You are working in the lab, how many grams of solute you need to make 200.0 g of 3.4% of solution?
Answer:
6.8g of solute are needed
Explanation:
Percent by mass, (w/w%) is defined as the mass of solute in 100g of solution. A solution that is 3.4% contains 3.4g of solute in 100g of solution. That means to make 200g of solution are required:
200g solution * (3.4g solute / 100g solution) = 6.8g of solute are needed
Question 7 of 25
The diagram shows the direction trade winds blow below and above the
equator. What causes the trade winds to move at an angle rather than straight
toward the equator?
for Easterlies
Answer:
A. The Coriolis Effect bends them
Explanation:
The Coriolis Effect is a force that causes objects and other things that are not attached to the ground and which are moving over a large distance around the Earth such as the trade winds or air planes, to take an apparent curved path in their motion rather than moving in a straight line, due mainly to the rotation of the Earth
The Coriolis Effect is named after French mathematical physicist Gaspard-Gustave de Coriolis
Please, I need help with this problem.
What do electrons Do in ionic bond? Do they transfer from metals to no metals or nonmetal to metals?
Answer:
electrons get transfered from metals to non metals in the formation of ionic bond.
metals have the tendency to lose electrons whereas non metals tend to stabilize by gaining electrons.
A molecule
B compound
C atom
D element
Answer:
D. Element.
Explanation:
Atoms form elements. Elements form molecules. Molecules form compounds.