Answer:
n = 0.413moles (3 sig-figs).
Explanation:
From definition of molarity, solve for moles and substitute given data.
Molarity(M) = Moles Solute(n)/Volume of Solution in Liters(V)
M = n/V => n = M·V => 0.330moles/Liter x 1.25Liters = 0.4125moles ≅ 0.413moles (3 sig-figs).
The change in mass during a nuclear reaction is given
by which equation?
Select one:
A
B
C
D
Answer:c
Explanation:
c
If you have 1.8 moles, how many atoms would you have?
Answer: 1.08×10^24 atoms
Which group would we find the element of this
atom in?
group 8
group 2
group 6
group 5
Fe,0, is an example of
Answer:
it is the example of molecules
If the energy of a photon of light is 3.37 x 10–19 J, what is the frequency of the light? A. 1.12 x 10–27 s –1 B. 8.90 x 1026 s –1 C. 5.09 x 1014 s –1 D. 6.70 x 10–44 s –1 E. 1.01 x 10–10 s –1
Answer:
The appropriate alternative is option C "[tex]5.09\times 10^{14} \ s[/tex]".
Explanation:
The given value is:
Energy of photon,
E = [tex]3.37\times 10^{-19} \ J[/tex]
As we know,
h = [tex]6.626\times 10^{-34} \ Js[/tex]
Now,
The frequency of the light will be:
⇒ [tex]E=hv[/tex]
On substituting the given values, we get
⇒ [tex]3.37\times 10^{-19}=6.626\times 10^{-34}\times v[/tex]
On solving, we get
⇒ [tex]v=5.09\times 10^{14} \ s[/tex]
If the energy of a photon of light is 3.37 x 10⁻¹⁹ J, then the frequency of the light is 5.09 x 10¹⁴ per sec.
How we calculate frequency?Frequency of light will be calculated by using the below formula:
E = hυ, where
E = energy of photon = 3.37 x 10⁻¹⁹ J
h = plank's constant = 6.626 × 10⁻³⁴ Js
Putting these values on the above equation and calculate for the frequency as:
υ = 3.37 x 10⁻¹⁹ J / 6.626 × 10⁻³⁴ Js = 5.09 x 10¹⁴ per sec
Hence, option (C) is correct i.e. 5.09 x 10¹⁴ per sec.
To know more about frequency, visit the below link:
https://brainly.com/question/254161
Which of the following does not describe natural migration?
Pls I really need help
Answer:
I think its learned behavior
Explanation:
because animals don't learn how to migrate, they just know already.
The point at which liquid absorbs enough energy to rapidly become a gas is known as the ____?
Answer:
Cycle
Explanation:
Oxygen Gas (O₂)
A. 2 atoms of oxygen
B. 2 atoms of hydrogen
C. 3 atoms of oxygen
D. 1 atom of oxygen
explain why numerical prefixes are not needed on the names of ionic compounds ?
Answer:
two ions can combine in only one combination.The number of ions is not fixed in a compound.
ammonia is poisonous or not
Answer:
it is actually corrosive
Explanation:
meaning it can cause burning of eyes, nose, throat and respiratory tract and can result in blindness, lung damage or even worst death
10. The electronic configuration of two elements X and Y are given below:
Зр
An
8p
compound.
Answer:
Pppppppp pppppppp pppppppp pppppppp
When K2Cr2O7 is cooled from 80oC to 20oC, how much solute will precipitate out of the solution?
Answer:
The amswer to the question is A
gallium (III) carbonate formula
24 grams of CH4 was added to the above reaction. Calculate the theoretical yield of CO2. A. 66 grams B. 33 grams c. 132 grams. D 8.72 grams
Answer:
Option A. 66 g
Explanation:
We'll begin by writing the balanced equation for the reaction. This is given below:
CH₄ + 2O₂ —> CO₂ + 2H₂O
Next, we shall determine the mass of CH₄ that reacted and the mass of CO₂ produced from the balanced equation. This is illustrated below:
Molar mass of CH₄ = 12 + (4×1)
= 12 + 4 = 16 g/mol
Mass of CH₄ from the balanced equation = 1 × 16 = 16 g
Molar mass of CO₂ = 12 + (16×2)
= 12 + 32 = 44 g/mol
Mass of CO₂ from the balanced equation = 1 × 44 = 44 g
SUMMARY:
From the balanced equation above,
16 g of CH₄ reacted to produce 44 g of CO₂.
Finally, we shall determine the theoretical yield of CO₂. this can be obtained as follow:
From the balanced equation above,
16 g of CH₄ reacted to produce 44 g of CO₂.
Therefore, 24 g of CH₄ will react to produce = (24 × 44) /16 = 66 g of CO₂.
Thus, the theoretical yield of CO₂ 66 g
The theoretical yield of CO₂ is 66 grams.
The balanced chemical equation of the reaction is as follows:
CH₄ + 2O₂ → CO₂ + 2H₂O
mass number of CH₄ = 16 g
mass number of CO₂ = 44 g
Therefore,
16 of CH₄ produced 44g of CO₂
24 g of CH₄ will give ? of CO₂
cross multiply
mass of CO₂ produced = 24 × 44 / 16
mass of CO₂ produced = 1056 / 16
mass of CO₂ produced = 66 grams
read more: https://brainly.com/question/10212233?referrer=searchResults
what is the electronic configuration of the atom x
Answer: K L M. 2 8 6.
Explanation:
Magnesium reacts with the oxygen in the air to form magnesium oxide. If 35 g of O2 was used in the reaction. How many Liters of O2 were present at 301K and a pressure of 1.35 atm?
Answer:
20.02 Liters
Explanation:
Mass = 35g
Volume = ?
Temperature = 301K
Pressure = 1.35 atm
The relationship between the quantities is given as;
PV = nRT
n = mass / Molar mass = 35 / 32 = 1.09375 mol
V = nRT / P
V = (1.09375 * 0.0821 * 301) / 1.35
V = 20.02 L
The weight of 112 liters of carbon dioxide at STP would be
44.09.
True or false?
Answer:
False
Explanation:
Its false
For the balanced equation shown below, how many moles of O2 b
produced by 0.4379 moles of C6H5F?
C6H5F + 402 – 600 + 2H2O + HF
How many moles are in 1.2x10^3 grams of ammonia, NH3?
Grams to Grams
1N2 + 3H2 -->2NH3
If you produced 34.06g of NH3 assuming excess N2 how many grams of H2 was used?
Answer:
grams H₂(g) = 6.11 grams H₂(g) used
Explanation:
Convert all given values to moles (if not already in moles), solve by rxn ratios and then convert moles to needed dimensions.
N₂(g) + 3H₂(g) => 2NH₃(g)
excess ? 34.6g/17g/mole = 2.04 moles
moles of H₂(g) needed = 3/2(2.04)moles = 3.05 moles H₂(g)
grams H₂(g) = 3.05 moles x 2 grams/mole = 6.11 grams H₂(g)
Which has a greater atomic radius silicon or magnesium
ammonia NH3 percentage composition
Answer:
82.24% percent composition of N and 17.76% percent composition of H .
Explanation:
7. How many grams are in 1288 L of CO2 ?
Answer:
56684.236000000004
Explanation:
The force resulting from oppositely charged poles is ...
which particle has the least mass
a. electron
b. proton
c. neutron
d. all have the same mass
Answer:
b. proton
Explanation:
The mass of an electron is only about 1/2000 the mass of a proton or neutron, so electrons contribute virtually nothing to the total mass of an atom. Electrons have an electric charge of −1, which is equal but opposite to the charge of a proton, which is +1.
Calculate the quantitative concentration of HCl in the solution if in the reaction of 500 cm3 the solution with AgNO3 produces 0.7 g of AgCl AgNO3 + HCl -------> AgCl + HNO3
Answer:
9.77x10⁻³M HCl
Explanation:
Assuming the solution of AgNO₃ is in excess:
Based on the chemical equation:
AgNO₃ + HCl → AgCl + HNO₃
We must find the moles of AgCl that will be produced. With the moles and knowing 1 mole of AgCl is produced from 1 mole of HCl we can find the moles of HCl and its concentration as follows:
Moles AgCl -Molar mass: 143.32g/mol-:
0.7g AgCl * (1mol / 143.32g) = 4.88x10⁻³moles AgCl = Moles HCl
As the volume of the solution is 500cm³ = 0.500L, the concentration of HCl is:
4.88x10⁻³moles HCl / 0.500L =
9.77x10⁻³M HClPLEASE HELP WILL GIVE BRAINLIEST
why does the tenpature change?
what are examples of natural production (not humans)?
what is the atomosephere?
PLEASE WRITE ONE PARAGRAPH FOR EACH QUESTIOIN
Answer:
why does the temperature change?
Daily air temperatures at Earth's surface are controlled by the incoming and outgoing energy. During the day, the air temperature increases as energy gains exceed the energy lost from Earth's surface. Throughout the night, the air temperature decreases as Earth's surface loses more energy than it receives.
What are examples of natural products?
Classes. The broadest definition of natural product is anything that is produced by life, and includes the likes of biotic materials (e.g. wood, silk), bio-based materials (e.g. bioplastics, cornstarch), bodily fluids (e.g. milk, plant exudates), and other natural materials (e.g. soil, coal).
What is the atmosphere?
The atmosphere is the blanket of gases which surrounds Earth. It is held near the surface of the planet by Earth's gravitational attraction.
Explanation:
I hope this helps!!
global warming is caused by an increase in the level of carbon dixode gas in the atmosphere. How has this affected the world's oceans?
1. if 100 ML of a 12.0 M HCL solution is diluted to 2.00 L, what is the molarity of the final solution?
during the combustion of methane (CH4), one mole of methane gas combines with two moles of oxygen gas (O2) to produce one mole of carbon dioxide gas (CO2) and two moles of water vapor. Which of the following chemical equations correctly represents the combustion of methane described above?
a)CH4(g) + 2O(g) ↔ CO2(g) + 2H2O(g)
b)CH4(g) + 2O(g) ↔ CO(g) + 2H2O(l)
c)CH4(g) + 2O2(g) ↔ CO2(g) + 2H2O(g)
d)CH4(g) + 2O2(g) ↔ CO(g) + 2H2O(l)
Answer:
a) cH4(g) +2O(g)__ CO2(g) +2H2O(g)
I hope this help