Answer:
Explanation:
Nitrogen gas in nitrogen cylinder is in gaseous form only . So when gas is released , pressure decreases because moles of gas in the cylinder decreases .
Propane gas in cylinder is in liquified form . The gas is partially in gaseous and liquid form . So when gas is released outside , pressure decreases inside but due to low pressure , some liquid form is converted into gaseous form which restores the pressure of gas inside cylinder . Hence , the pressure of gas remains unchanged inside cylinder.
Which of the following covalent bonds is the strongest?
a)
quadruple covalent bond
b)
triple covalent bond
c)
double covalent bond
d)
single covalent bond
Answer:
a) quadruple covalent bond
Explanation:
Quadruple covalent bonds are the strongest covalent bonds. The more the number of bonding pairs, the stronger the bond becomes.
A covalent bond is formed by sharing of electrons between two species. They are usually between compound with similar electronegativities. The number of bonds between the atom determines the bond strength.Single < double < triple < quadruple covalent bonds.
If a wave is traveling at a steady speed and its frequency is
doubled, what happens to the wavelength of that wave?
Answer:
If the frequency is doubled, the wavelength is only half as long.
Explanation:
Wave speed equals frequency*wavelength. So doubling the frequency must halve the wavelength in order for wave speed to remain the same.
In the chemical reaction below, what Is the product? C+o2 -> Co2
Answer:
CO₂
Explanation:
The product of the reaction is CO₂.
In a chemical reaction, the product is the substance usually found on the right hand side of the expression.
Reaction equation is given as;
C + O₂ → CO₂
In this reaction, C and O₂ are the reactants
CO₂ is the product of the reaction.
This reaction is called a combination reaction in which two species combines to give a product.
CALCULATE THE MOLES IN 2.17 X10^23 MOLECULES OF FLUORINE
Answer:
0.36 molesExplanation:
To find the number of moles in a substance given it's number of entities we use the formula
[tex]n = \frac{N}{L} \\[/tex]
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
[tex]n = \frac{2.17 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{2.17}{6.02} \\ = 0.360465...[/tex]
We have the final answer as
0.36 molesHope this helps you
What does the formula tell us in ionic compounds?
Answer:The overall ionic formula for a compound must be electrically neutral, meaning it has no charge. When writing the formula for the ionic compound, the cation comes first, followed by the anion, both with numeric subscripts to indicate the number of atoms of each.
Explanation:
orang juice a mixture?why?
Answer:
mixture, because it is made of more than 1 ingredient.
help me pleaseeeee!!!!!
Pure substances made of two or more kinds of atoms bound together
Compound
Mixture
Solution
Salt
The formula for bismuth(III) arsenide is..?
Answer:
BiAs
Explanation:
In your own words, describe the purpose of using a chemical equation.
PLEASEEEE HURRY
Answer:
Hey mate, here is your answer. Hope it helps you.
Explanation:
To show how substances in a chemical reaction interact and to keep track of all elements and the number of atoms in each element on each side of the equation.The purpose of writing a balanced chemical equation is to know: the reactants (starting material) and products (end results) that occur. the ratios in which they react so you can calculate how much reactants you need and how much products can be formed.
Answer:
Sample Response: Chemical equations show how chemicals interact when a reaction occurs. They use symbols and formulas to show the chemical reaction so that chemical names do not need to be written out. They also help keep track of all elements and the number of atoms of each element on each side of the equation.
Explanation:
Mark me as brainliest pls
Analyisis Of Compound (%)
C=72.15 H=7.08 N=4.68 O=16.03
What is it?
Answer:
Explanation:
Ratio of C : H : N : O in grams
= 72.15 : 7.08 : 4.68 : 16.03 in grams
Ratio of C : H : N : O in moles
72.15/12 : 7.08/1 : 4.68/14 : 16.03/16 in moles
6.01 : 7.08 : .334 : 1.00
6.01/ .334 : 7.08/.334 : .334/.334 : 1.00/.334 in moles
18 : 21.19 : 1 : 3
18 : 21 : 1 : 3
empirical formula = C₁₈H₂₁NO₃
It is codeine .
A boxed 10 kg computer monitor is dragged by friction 5.5 m up along the moving surface of a conveyor belt inclined at an angle of 36.9° above the horizontal. If the monitor’s speed is a constant, how much work is done on the monitor by friction?
Answer:
324 J
Explanation:
58.84 * 5.5 J = 324 J
I got 58.84 by 10 * 9.8 (gravity) * sin(36.9)
The amount of work done on the monitor by friction is equal to 431 Joules.
Given the following data:
Mass of computer monitor = 10 kgDistance = 5.5 metersAngle of inclination = 36.9°To determine the amount of work done on the monitor by friction:
Mathematically, work done is given by the formula:
[tex]Work\;done = mgdcos\theta[/tex]
Where:
m is the mass of an object.g is the acceleration due to gravity.d is the distance.Substituting the given parameters into the formula, we have;
[tex]Work\;done = 10 \times 9.8 \times 5.5 \times cos(36.9)\\\\Work\;done = 539 \times 0.7997[/tex]
Work energy = 431 Joules.
Read more: https://brainly.com/question/22599382
Which of the following has the largest electronegativity? AI, Cu, S, or O?
Answer:
O(Oxygen)
Explanation:
Oxygen or O among the given options has the highest electronegativity of 3.5 as compared to 2.4 of sulfur. Thus, there is a lesser attraction in the bonds of Sulfur. The other two elements Al(Aluminium) and Cu are less electronegative than Sulfur and Oxygen as they are metals and possess electropositivity while the latter displays more electronegativity due to being non-metals. Hence, Oxygen is the answer.
Noah added yeast and sugar to lukewarm water and placed it in a flask. He stretched a balloon over the opening of the flask. After several minutes, he noticed small bubbles rising along the side of the flask as the balloon slowly began to inflate. Noah concluded that —
Answer:
There was a chemical reaction
Explanation:
there was bubbles on the side of the flask
How many hydrogen (H) atoms are on the reactants side
Answer:
two hydrogen atoms
Explanation:
What is the correct name for the compound H2O
Answer:
The common name for the compound H2O is water.
Explanation:
The systemic name of H2O is Dihydrogen monoxide.
Answer:
water
Explanation:
Which of the following is an example of aerobic respiration?
A.Using yeast to make dough
B.Respiring while swimming underwater
C.Plant roots respiring in soil
Answer:
i think the other person is wrong because humans cant breathe underwater
Explanation:
i say c. is the answer
plz help me asap and dont make it more then 4 sentences or my teacher will know it was not me
y’all I’m tryna get you some BRAINLIEST POINTS!!!! So answer this simple question.
Can someone write 3 complex sentences i really need some help thank you!!!:)
Explanation:
This Theory proves that every Organism is made of one cell.
This also explained spread of cells like that of cancer.
this also explains how organisms create and die.
it explained the why organisms of same breed are alike or similar
The Ca +2 ion is isoelectronic with ?
Answer:
nut
Explanation:
Why are fossils
important in the
development of the
geologic time scale?
A mountain climber at the peak of a mountain has _____
energy.
Answer:
Potential energy
Explanation:
A mountain climber at the peak of a mountain has potential energy.
The potential energy of a body is stored energy in a body. It is function of mass and position of the body.
Mathematically;
P.E = mgh
m is the mass
g is the acceleration due to gravity
h is the height
3+
4N
what element is this?
Answer:
Selenium
Explanation:
What is a vapor?
O A. A substance that has a much higher melting point and boiling
point than other similar substances
O B. A substance that is always in the solid or liquid phase at room
temperature
C. A substance that is in the gas phase at a temperature at which it
would normally be a solid or liquid
O D. A substance that forms a gas, but only at very high temperatures
Answer:
in physics, a vapor or vapour is a substance in the gas phase at a temperature lower than its critical temperature, which means that the vapor can be condensed to a liquid by increasing the pressure on it without reducing the temperature. A vapor is different from an aerosol.
Explanation:
An element is determined by the number of
Answer:
The chemical element of an atom is determined by the number of protons, or the atomic number, Z, of the nucleus. The element oxygen has an atomic number Z=8, while carbon has Z=6.
Explanation:
Answer:
The number of protons determines which kind of element an atom is. If an atom has 8 protons, we can determine this element is oxygen.
Explanation:
In the nucleus of an atom, there are protons and neutrons. Protons have a positive charge and neutrons have a neutral charge. All atoms have at least one proton that determines its atomic number.
halppppppppppppppppppppppppppppppppp
Answer:
It responds to the environment.
It grows and develops.
It produces offspring.
It maintains homeostasis.
It has complex chemistry.
It consists of cells.
What is the momentum of a particle that has a mass of 0.00001346 Kg and moves with a velocity of 790,204,000 m/s?
Answer:
10636.15 kgm/sExplanation:
The momentum of an object can be found by using the formula
momentum = mass × velocity
From the question we have
momentum = 0.00001346 * 790204000
= 10636.14584
We have the final answer as
10,636.15 kgm/sHope this helps you
Which of the elements below will form an anion?
B (Boron)
CI (Chlorine)
Ca (Calcium)
Fe (Iron)
Answer:
Which of the elements below will form an anion?
CI (Chlorine)
Explanation: Chlorine generally behaves as an anion having an oxidation state -1
Use the following diagram to answer question . A science class built the models shown below to conduct a study. Students poured the same amount of water over both models. They observed that most of the dirt emptied out of the container in Model A and that a small amount of dirt emptied out of the container in Model B. What were the students MOST LIKELY studying?Immersive Reader
The rock cycle
Earthquakes
Erosion
Volcanic eruptions
Answer:D erosion
Explanation:
The question tells you how the students watched the dirt move so it makes sense that its erosion
Explain why transition metals do not have a predictable pattern for the
ionic charges they form.
Explanation:
Many transition metals cannot lose enough electrons to attain a noble-gas electron configuration. In addition, the majority of transition metals are capable of adopting ions with different charges.
The reason why transition metals do not have a predictable pattern should be explained below.
What are transition metals?It comprises many chemical elements that contains valence electrons with respect to the participation in the creation of the chemical bonds. The various transition metals should not lose sufficient electrons for attaining the noble gas electron configuration. The majority of the transition metal should be capable of adopting the ions with the distinct charges.
Learn more about charges here: https://brainly.com/question/21186713
Which of the following is the correct definition of chemical energy?
A.
energy stored in chemical bonds of molecules
B.
energy produced from the splitting of atoms
C.
energy of an object due to the random motion of its atoms and molecules
D.
energy an object has because of its motion or position
PLSHEL HELP DUE TODAY
Answer:
A
Explanation:
Calculate the mass of 120 cc of nitrogen at STP.How many
numbers of molecules are present in it?
2.67 × 10^19
Explaination:
The volume of the gas is 1c.c = 10^ - 3L
∴ Number of moles of the gas is=22.4 × 10^-3
Now,
Number of molecules = n × 6.022 × 10^23
∴ Number of Nitrogen Molecules
= 10^-3/22.4 × 6.023 × 10^23
= 2.67 × 10^19
Answer:
6.02 x 10²⁰ molecules
Explanation:
Given parameters:
Volume of nitrogen = 120cm³
Unknown:
Mass of Nitrogen = ?
Number of molecules present in it = ?
Solution:
At STP;
1 mole of a substance contains 22.4dm³ particles
100cm³ = 1dm³
24cm³ will give 0.024dm³
22.4dm³ of particles are in 1 mole of substances at STP
0.024dm³ of particles will contain [tex]\frac{0.024}{24}[/tex] = 0.001mole
Mass of Nitrogen = Number of moles x molar mass
molar mass of nitrogen = 14g/mol
Mass of nitrogen = 0.001 x 14 = 0.014g
Number of molecules present;
1 mole of a substance contains 6.02 x 10²³ molecules
0.001 mole of Nitrogen will contain 0.001 x 6.02 x 10²³ = 6.02 x 10²⁰
6.02 x 10²⁰ molecules
