HELPPPPPP!!!!
How many protons, electrons, and neutrons does Argon have?
Answers
answer:
18 protons
22 neutrons
18 electrons
good luck :)
hopefully, this helps
have a great day !!
Number of Protons - 18
Number of Neutrons - 22
Number of Electrons - 18
Related Questions
what's the advantage and disadvantage of How does the number of "carbon" atoms in different alcohol affect the energy density of alcohol ( like Pentanol, butanol, propanol and methanol?
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Please Help. Thank You!
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2. What’s different inside of an atom to make them into different elements is that the number of protons in an atom is the defining feature of an atom. This is what makes a element different from another.
Hope this helps!!
A 216-L cylinder holds propane gas at 184.8 kPa of pressure and 127°C. How many moles of propane are in the cylinder?
Answers
Answer:
12 moles of propane.
Explanation:
From the question given above, the following data were obtained:
Volume (V) = 216 L
Pressure (P) = 184.8 KPa
Temperature (T) = 127 °C
Number of mole (n) =?
Next, we shall convert 127 °C to Kelvin temperature. This can be obtained as follow:
T(K) = T(°C) + 273
T(°C) = 127 °C
T(K) = 127 + 273
T(K) = 400 K
Finally, we shall determine the number of mole of propane gas in the container. This can be obtained as follow:
Volume (V) = 216 L
Pressure (P) = 184.8 KPa
Temperature (T) = 400 K
Gas constant (R) = 8.314 L.KPa/Kmol
Number of mole (n) =?
PV = nRT
184.8 × 216 = n × 8.314 × 400
39916.8 = n × 3325.6
Divide both side by 3325.6
n = 39916.8 / 3325.6
n = 12 moles
Thus, 12 moles of propane is present in the cylinder
FREE BRAINLIST NEED HELP ASAP
Answers
Pick three properties of water that you think are the most important for life to exist.
Explain how that property works in nature and why it is one of the most important properties to sustain life. PLEASE HELP ME ASAP ON THIS QUESTION !!!!
Answers
Answer:
Water's unique density, high specific heat, cohesion, adhesion, and solvent abilities allow it to support life.
Explanation:
In total, how many atoms are present in lithium acetate?
LiC2H302
1
6
8
10
Answers
Hope it’s right
Wish you luck
When a precipitation reaction occurs the resulting mixture of liquid solution and solid precipitate would be considered a___________ Mixture.
Answers
The mixture has more than one phase of matter in it.
When a precipitation reaction occurs the resulting mixture of liquid solution and solid precipitate would be considered a heterogeneous Mixture.
What is precipitation reaction?Chemical reactions known as precipitation reactions take place in aqueous solutions to produce precipitates. Moreover, chemical changes that occur inside the substances are a part of chemical processes.
Moreover, chemical reactions take place between two or even more chemical substances, known as reactants. As a result, the reactants might be solid, gaseous, or liquid in nature. When a precipitation reaction occurs the resulting mixture of liquid solution and solid precipitate would be considered a heterogeneous Mixture.
Therefore, when a precipitation reaction occurs the resulting mixture of liquid solution and solid precipitate would be considered a heterogeneous Mixture.
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Which statement describes the reaction involved in cellular respiration?
A. Sugar is produced and stored until it is needed for energy.
B. CO2 is removed from the atmosphere, and O2 is released into the
atmosphere.
C. It is a redox reaction in which energy is released to ATP molecules.
D. O2 is removed from the atmosphere, and CO2 is released into the
atmosphere.
Answers
Answer:
C
Explanation:
Cellular respiration is the metabolic process and is a reduction-oxidation reaction that yields ATP molecules. Thus, option C is accurate.
What is cellular respiration?It is a redox reaction that utilizes glucose and oxygen molecules to release carbon dioxide and energy in the form of ATP. This energy released is used to drive the functions and roles of the cells.
The food molecule, glucose is broken in the presence of the oxygen molecule to release the carbon dioxide and the energy from the cells that are in the form of adenosine triphosphate molecule.
Therefore, option C. cellular respiration is a redox reaction is correct.
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An 8.5 g. Of ethanol (C2H5OH) placed in a constant volume calorimeter and the temperature rose to 3.2°C. Find the heat of reaction of the ethanol (MM =46.1 g/mol) in kJ/mol. The heat capacity of the calorimeter plus water is read as 6.38 J/°C
Answers
Answer:
[tex]\Delta H_{rxn}=-0.111 \frac{kJ}{mol}[/tex]
Explanation:
Hello!
In this case, since the total heat flow due to the reaction equals the negative of the calorimeter's heat, we can first compute the former as shown below:
[tex]Q_{rxn}=-C\Delta T\\\\Q_{rxn}=6.38\frac{J}{\°C}*3.2\°C=-20.416J[/tex]
Now, since this total heat flow due to the reaction is defined in terms of the heat of reaction and the total reacted moles:
[tex]Q_{rxn}=n*\Delta H_{rxn}[/tex]
Thus, we compute the moles in 8.5 g of ethanol:
[tex]n=8.5g*\frac{1mol}{46.08g}=0.185mol[/tex]
Therefore, the heat of reaction results:
[tex]\Delta H_{rxn}=\frac{Q_{rxn}}{n} =\frac{-20.416J}{0.185mol} =-110.7J/mol\\\\\Delta H_{rxn}=-0.111 \frac{kJ}{mol}[/tex]
Best regards!
Ozone, O3, is produced in automobile exhaust by the reaction represented by the equation:
NO2 (g) + O2 (g) → NO (g) + O3 (g)
What mass of ozone is predicted to form from the reaction of 5.0 g NO2 in a car’s exhaust and excess oxygen?
Answers
Answer: 5.28 g of [tex]O_3[/tex] is produced.
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of} NO_2=\frac{5.0g}{46g/mol}=0.11moles[/tex]
The balanced chemical reaction is:
[tex]NO_2(g)+O_2(g)\rightarrow NO(g)+O_3(g)[/tex]
[tex]NO_2[/tex] is the limiting reagent as it limits the formation of product and [tex]O_2[/tex] is the excess reagent.
According to stoichiometry :
1 mole of [tex]NO_2[/tex] produces = 1 mole of [tex]O_3[/tex]
Thus 0.11 moles of [tex]NO_2[/tex] will produce=[tex]\frac{1}{1}\times 0.11=0.11moles[/tex] of [tex]O_3[/tex]
Mass of [tex]O_3=moles\times {\text {Molar mass}}=0.11moles\times 48g/mol=5.28g[/tex]
Thus 5.28 g of [tex]O_3[/tex] is produced.
WILL GIVE BRAINLESS IF ALL ANSWER ARE CORRECT
Which of these is not a limiting factor for a population of squirrels?
a
Available space to build nests
b
Available water sources
c
Available friends to play
d
Available food to eat
Question 2 (4 points)
A decrease in limiting factors leads to an increase of biodiversity.
True
False
Question 3 (4 points)
If a disease destroying soybean plants in a field completely sweeps through an ecosystem, what would happen to the population of
songbirds that rely on the soybeans for food?
a
The songbird population would decrease
b
The songbird population will remain constant
c
The songbird population will increase rapidly
d
The songbirds will all crumple to the ground instantaneously
Question 4 (4 points)
Which of these limiting factors from the lesson is abiotic?
a
Predators
b
Food
c
Weather
d
Diseases
Question 5 (4 points)
Which of the following was given in the lesson as a limiting factor for organisms in the Caribbean Sea?
a
Amount of rainfall
b
Nesting locations
c
Water Temperatures
d
A lack of space within the mangrove swamps
Question 6 (5 points)
Are limiting factors positive, negative, or both for an ecosystem? Explain your reasoning
Question 7 (4 points)
When a population grows past the ecosystem's carrying capacity, what happens to the population?
a)It continues to grow
b)the population starts to die off to return to carrying capacity
c)The population will go extinct due to lack of resources
d)The population grows, then finds a new carrying capacity
Question 9 (4 points)
Will competition increase or decrease the carrying capacity of an ecosystem for the animals in competition?
increase
Decrease
Question 10 (4 points)
The largest number of individuals in a species that an environment can support long term...
a)Immigration
b)population Density
c)Emigration
d)Carrying Capacity
Answers
Answer:
See explanation
Explanation:
1) C
2) True
3) A
4) C
5) A
6) Both. Some species that rely on the limiting factors will be harmed and other species that are prey to those species relying on limiting factors will be benefited.
7) B
9) Decrease
10) D
what other adaptations should zebras have?
Give me ideas please
Answers
what is pollinations
Answers
Answer:
Explanation:
A pollinator is an animal that moves pollen from the male anther of a flower to the female stigma of a flower. This helps to bring about fertilization of the ovules in the flower by the male gametes from the pollen grains.
The book will serve as a flat surface on which you
will later place additional weights. It has its own
mass, which you need to measure.
Zero the balance. Place the book on the balance.
Measure the mass to the nearest gram (1 g).
Answers
The book will serve as a flat surface on which you
will later place additional weights. It has its own
mass, which you need to measure.
Zero the balance. Place the book on the balance.
Measure the mass to the nearest gram (1 g).
498 g
In this experiment, you will measure all masses in
kilograms. Convert the book’s mass to kilograms.
0.498 kg
The book will serve as a flat surface on which you will later place additional weights. It has its own mass, Therefore, the mass of book is 0.498 kg.
What do you mean by mass ?The term Mass is defined as a dimensionless quantity representing the amount of matter in a particle or object. The standard unit of mass in the International System (SI) is the kilogram (kg).
Mass is a central measurement of how much matter an object contains. Weight is a measurement of the gravitational force on an object. It not only depends on the object's mass, but also on its position. Hence, weight is actually a measure of force.
In this experiment, you will quantify all masses in kilograms. Convert the book’s mass to kilograms. Therefore, it will become 0.498 kg.
Thus, the mass of the book is 0.498 kg.
To learn more about the mass, follow the link;
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(GIVING BRAINLIEST)
The table below shows the characteristics of three components of the solar system labeled A, B, and C. Which choice identifies the components in the correct order?
1 Comet, asteroid, sun
2 Moon, planet, sun
3 Moon, sun, planet
4 Sun, planet, moon
Answers
Answer:
4 sun , planet, moon are the components in the correct order
can some type 1 paragraph about photosynthesis gas and become my friends and you might get brainlist
Answers
Answer:
Photosynthesis gas, is called carbon dioxide. Carbon Dioxide in this process is where the plants take in the dioxide and water, which is slowly reduced which gains electrons! :)
Explanation:
Hope this helps ! plz mark as brainliest!
Which images show a container holding a heterogeneous mixture?
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0.25 dm3 contains 0.4 mol NaOH. Find its concentration.
Answers
Answer:
1.6M
Explanation:
molarity = moles /Volume = 0.4/0.25= 1.6 M
How does a hydroelectric power plant convert energy?
A. As water flows through the channels toward the turbines, it has kinetic energy. This is changed to mechanical energy as the water turns the turbines. Then the mechanical energy of the turbines is changed to electrical energy by the generator.
B. As water flows through the channels toward the transformer, it has potential energy. This is converted to electrical energy by the transformer, and then the energy is magnified by the generator.
C. As water flows through the channels toward the generator, it has potential energy. This is changed to electric energy as the generator rotates. Some of the electric energy is used to change water's energy into kinetic energy.
D. As water flows through the channels toward the turbine, it has kinetic energy. This is changed to potential energy within the turbine. This potential energy is converted to electrical energy by the transformer.
PLS HELP I WILL GIVE BRAINLYIST!!!
Answers
i really need help:/ my friend is helping and nobody understands it
Answers
Answer:
A= Compound
B= Mixture
C= Element
D= Element
Explanation:
A has two different types of atoms chemically together as a compound
B is made up of two or more different atoms not chemically joined together
C has one type of atom
D has one type of molecule. They're the same and could be a diatomic element like hydrogen
Sorry if this is confusing or wrong
Is the equation for reaction 1 balanced? Explain your reasoning. If the reaction is not balanced, then state how you would balance it. Then, provide the balanced equation.
Answers
Answer:
Reaction is already balanced
Explanation:
The equation in reaction 1 is given as;
CH3COOH + NaHCO3 --> CO2 + H2O + Na+ + CH3COO-
The reaction is already balanced. This is because the umber of atoms of elements in the reactant is equal to that of the products
Carbon
Reactant = 2 + 1 = 3
Product = 2 + 2 = 3
Hydrogen
Reactant = 3 + 1 + 1 = 5
Product = 2 + 3 = 5
Oxygen
Reactant = 2 + 3 = 5
Product = 2 +1 + 2 = 5
Sodium
Reactant = 1
Product = 1
Answer:
The reaction is already balanced because the number of atoms in the reactant is equal to the products
Explanation:
Scientists are very curious about the world around them. What are some
aspects of the world around you that you find interesting? How might you
study some of these aspects?
Answers
Why are ions created in an ionic bond?
Answers
The atom that loses the electrons becomes a positively charged ion (cation), while the one that gains them becomes a negatively charged ion (anion).
_Na2B407 + _H2SO4(aq) +
H2SO4(aq) + -_H200 → __H3BO3(s) + __Na2SO4(aq)
Balance the Equation
Answers
Answer:
Na2B4O7 + H2SO4 + 5H2O → 4H3BO3 + Na2SO4
Explanation:
The unbalanced equation is given as;
Na2B4O7 + H2SO4(aq) + H2O → H3BO3(s) + Na2SO4(aq)
Balancing the equation of the reaction involves making sure the number of moles of elements in the reactants to be equal to the number of moles of the element of the products.
The balanced equation is given as;
Na2B4O7 + H2SO4 + 5H2O → 4H3BO3 + Na2SO4
Please help me with this ! All help is appreciated :)
Answers
Answer:
See below!
Explanation:
Chlorine is very electronegative, meaning that it will pull electrons, or negativity toward itself. When it pulls the negativity towards itself, the chlorine becomes partially negative and the carbon becomes partially positive. Because of this, the compound is polar.
A student investigates a pure metal, X . The student takes a 100.0 g piece of metal X , heats it to 500.0°C , then places it on a 1000.0 g block of ice at 0.0°C . The ice partially melts, and the final temperature of the metal, ice, and melted water is 0.0°C . The student calculates the experimental value of the specific heat capacity of metal X and records it as 0.24 J/(g⋅°C) . Calculate the magnitude of the energy change (qmetal) of metal X during the experiment.
Answers
Answer:
q_metal = -12000 J = -12 KJ
Here, the negative sign indicates that the energy is lost by the metal piece.
Explanation:
The magnitude of energy change of the metal X can be given by the following formula:
[tex]q_{metal} = mC\Delta T[/tex]
where,
m = mass of metal = 100 g
C = Specific Heat Capacity of metal X = 0.24 J/g.°C
ΔT = Change in Temperature of Metal Piece = 0° C - 500°C = -500°C
Therefore, using these values in the equation, we get:
[tex]q_{metal} = (100\ g)(0.24\ J/g^oC)(-500^oC)\\[/tex]
q_metal = -12000 J = -12 KJ
Here, the negative sign indicates that the energy is lost by the metal piece.
Please help me guys.
Answers
pls help the answer is out of them 4 boxes there
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Answer:
whatgrade is this
Explanation:
A student runs 100 meters in 16 seconds. What is the speed of the student?
Answers
Answer:
6.25m/s
Explanation:
speed = distance/time
speed = 100/16 = 6.25m/s
hii if you answer this i’ll give you brainlist
Answers
Answer: 24.0g of NaCl.
The number seems the highest, but I am not in Honors Chem (I am taking honors biology), so I do not know.