Explanation:
molecules NH3 = 1.47 moles x 6.02x1023 molecules/mole = 8.9x1023 molecules of NH3 (to 2 sig. figs.)
Why does air with higher amounts of water vapor have a lighter density?
Answer:
moist air is less dense than dry air because water has a lower molecular weight than nitrogen and oxygen
Answer:
Water vapor is a relatively light gas when compared to diatomic Oxygen and diatomic Nitrogen. Thus, when water vapor increases, the amount of Oxygen and Nitrogen decrease per unit volume and thus density decreases because mass is decreasing.
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
What makes up soil and where do these main components come
from? ASAP
Answer:
Soil is a mixture of minerals, dead and living organisms (organic materials), air, and water.
Explanation:
Dead organisms decompose(kind of like fertilizer)
water comes from nearby watersheds, precipitation processes, etc.
Answer:
Soil is made up of three main components – minerals that come from rocks below or nearby, organic matter which is the remains of plants and animals that use the soil, and the living organisms that reside in the soil. The proportion of each of these is important in determining the type of soil that is present.
Write the complete electron configurations for
(i) copper
(ii) xenon
Answer:
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HELP FAST!!!
Compared with intelligence sailors, space operations specialists are which of the following?
more involved in tracking targets
more involved in aligning communications systems
more involved in disseminating intelligence results
more involved in analyzing classified material
Answer:
the fourth one I think....m
Explanation:
tfffffdd
The answer is:
more involved in aligning communications systemsExplanation:
A space operations specialist tracks, monitors, and operates spacecraft and satellites. The specialist aligns ground, spacecraft, and satellite communications systems to provide accurate data. (I took the course, I know.)
Radiation from which type of decay has the least energy?
A. Electromagnetic decay
B. Beta decay
C. Alpha decay
D. Gamma decay
SUBMIT
Radiation from alpha decay has the least energy.
Alpha decay is the name for the nuclear process that releases alpha particles. Two protons that were lost by the uranium atom are present in the alpha particle. Additionally, the two protons have a +2 charge. The particle's mass, or the sum of its protons and neutrons, is represented by the top number, 4, in this case. Alpha particles must also have two neutrons because they have two protons, making a total of four protons and neutrons. Two protons and two neutrons are the constant components of alpha particles.
A nuclear process known as "alpha decay" releases a particle made up of two protons and two neutrons when an unstable nucleus transforms to another element. The helium nucleus that is being ejected is known as an alpha particle.
To learn more about alpha decay refer the link:
https://brainly.com/question/27870937
#SPJ1
Answer:
C) Alpha decay
Explanation:
Alpha decay, beta decay, electromagnetic decay, Gamma decay
its least to greatest
PLEASEEEE HELP URGENTTTT
Answer:
i don't see the question
Explanation:
Write the formulas for the following ionic compounds.
potassium iodide
magnesium phosphide
silver sulphide
iron(III) bromide
magnesium hydroxide
sodium sulphate
lead (IV) nitrate
ammonium carbonate
Answer:
1) KI
2) Mg3P2
3) Ag2S
4) FeBr3
5) Mg(OH)2
6) Na2SO4
7) Pb(NO3)4
8) (NH4)2CO3
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?
how many molecules are in 2.1 moles of carbon monoxide
Answer:
[tex]1.26*10^2^4[/tex]
Explanation:
To find molecules, we will need to multiply the number of moles of carbon monoxide by Avogadro's number. Avogadro's number is [tex]6.022*10^2^3[/tex].
So the equation would look like this:
[tex](2.1) * (6.022*10^2^3) = 1.26 *10^2^4[/tex]
Fill in the blanks and name the process.
What is the process of ____ reproduction where a cell makes ___ of itself?
How do gut bacteria help people?(1 point)
A
by making enzymes to break down food
B
by causing a variety of digestive disorders
C
by releasing compounds that kill harmful bacteria
D
by training other bacteria to treat infection
Answer: the answer would be B
if you help me, you are the best
Answer:
The following numbers are true for protons:
2.
5.
7.
Explanation:
I know for a fact that Protons have a positive charge
they are located inside of the nucleus
Go.ogle says that they aren't involved in bonding
And it says that it has a mass of one
I hope this helps chu <3
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
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
A chemist found a 60.00 gram sample containing copper and oxygen. Given the following percent composition, what is the mass of copper in the sample?
Copper- 57.08 %
Oxygen- 42.9296
choose an answer:
O 0.5708 g Cu
o 25.02 g Cu
34.25 g cu
63.5 g Cu
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.
What mitigation measures can communities do to reduce the damage and impact of sudden geologic hazards?
Explanation:
require an emergency support immediately
when u get ur answer what type of reaction is it?
-double replacement
-combustion
-synthesis
-decomposition
-single replacement
Answer: combustion reaction
[tex]C_{25}H_{52}+38O_2\rightarrow 25CO_2+26H_2O[/tex]
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side.
The balanced chemical equation is:
[tex]C_{25}H_{52}+38O_2\rightarrow 25CO_2+26H_2O[/tex]
The given reaction is a combustion reaction as in a combustion reaction , a susstaance is oxidized in the presence of oxygen to give carbon dioxide and water.
What is the molality of a solution containing 30.0 g of napthalalene (C10H8) dissolved in 500.0 g of toulene? Please provide work. Thanks in advance!
Answer:
0.468 m
Explanation:
From the question given above, the following data were obtained:
Mass of napthalalene (C₁₀H₈) = 30 g
Mass of toulene = 500 g
Molality =?
Next, we shall determine the number of mole in 30 g of C₁₀H₈. This can be obtained as follow:
Mass of C₁₀H₈ = 30 g
Molar mass of C₁₀H₈ = (12×10) + (8×1)
= 120 + 8
= 128 g/mol
Mole of C₁₀H₈ =?
Mole = mass / molar mass
Mole of C₁₀H₈ = 30 / 128
Mole of C₁₀H₈ = 0.234 mole
Next, we shall convert 500.0 g of toulene to Kg. This can be obtained as follow:
1000 g = 1 Kg
Therefore,
500 g = 500 g × 1 Kg / 1000 g
500 g = 0.5 Kg
Finally, we shall determine the molality of the solution. This can be obtained as follow:
Mole of solute (C₁₀H₈) = 0.234 mole
Mass of solvent (toulene) = 0.5 Kg
Molality =?
Molality = mole of solute / Kg of solvent
Molality = 0.234 / 0.5
Molality = 0.468 m
Question 10 (4 points)
A 3.4 L balloon is let go near the surface of the Earth where the pressure is about 1.15 atm. As the balloon floats up to the top of the
atmosphere where the pressure is only about 0.35 atm it expands. What is the volume of the balloon at the top of the atmosphere?
How many particles are in 5.00 grams of nitric acid?
Answer:
0.0500
Explanation:
A balloon takes up 625 L at 0°C. If it is heated to 80°C, what will its new volume be?
Answer:
Me gusta tu corte G
Explanation:
The force resulting from oppositely charged poles is ...
The change in mass during a nuclear reaction is given
by which equation?
Select one:
A
B
C
D
Answer:c
Explanation:
c
10. The electronic configuration of two elements X and Y are given below:
Зр
An
8p
compound.
Answer:
Pppppppp pppppppp pppppppp pppppppp
What do you already know about the structure of a water molecule?
Answer:
The key to understanding water's chemical behavior is its molecular structure. A water molecule consists of two hydrogen atoms bonded to an oxygen atom, and its overall structure is bent. This is because the oxygen atom, in addition to forming bonds with the hydrogen atoms, also carries two pairs of unshared electrons
Explanation:
Hope it helps
How many moles of oxygen are required to use up 2 moles of propane?
Answer:
6.0 moles
Explanation:
The thing to remember about balanced chemical equations is that the stoichiometric coefficients added to each chemical species that takes part in the reaction are equivalent to moles.
I think its 10 moles, hope this helps.
I have an irregular object that I want to find the density of. I put it in a graduated cylinder and the water rises by 12 mL. I put the object on a scale and it measures 42 g. What is the density of the object?
Answer:
12
Explanation:
Describe the relationship between thermal energy and temperature of a substance.
help me pls :D