Answer:
236 cubic cm
Explanation:
We are given that
Initial volume, V1=200 cubic centimeter
Initial temperature, T1=60 degree Celsius=60+273=333 K
Final temperature, T2=120 degree Celsius=120+273=393 K
Kelvin temperature=Celsius temperature+273
We have to find the new volume of the balloon.
We know that
Charles's law
[tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex]
Using the formula
[tex]\frac{200}{333}=\frac{V_2}{393}[/tex]
[tex]V_2=\frac{200\times 393}{333}[/tex]
[tex]V_2=236cm^3[/tex]
Hence, the new volume of the balloon will be 236 cubic cm.
Which of the following properties do solids and liquids have in common?
definite volume
definite temperature
definite smell
definite shape
Answer:
definite volume
Explanation:
Both solids and liquids have a definite volume: The difference is that solids have definite shape while liquids do not -liquids take the shape of their containers-.
Having a definite volume is why liquids cannot be compressed, a property that is used in hydraulic systems.
A simplified version of photosynthesis can be represented as carbon dioxide
combining with water to form glucose and oxygen: 6CO2 + 6H20 - C6H12O6 +
602. In this reaction, is oxidized.
A) hydrogen
B)
oxygen
C) carbon dioxide
D) carbon
B) oxygen is oxidized.
Further explanationGiven
photosynthesis reaction
6CO2 + 6H20 ⇒ C6H12O6 + 602
Required
the oxidation compound
Solution
Oxidation-reduction reactions or abbreviated as Redox are chemical reactions in which there is a change in oxidation number
Oxidation is an increase in oxidation number, whereas Reduction is a decrease in oxidation number.
In the photosynthetic reaction, oxidation and reduction reactions occur in:
CO2 to C6H12O6 : reduction
Oxidation number of C from +4 to 0
H2O to O2 : oxidation
Oxidation number of O from -2 to 0
Which of the following is true of cartilage?
absorbs shock
is relatively stretchy
does not attach to bone
is not considered connective tissue
Answer:
absorbs shock
Explanation:
Answer: absorbs shock
Explanation:
how many grams of water produced if we react 3 moles of hydrogen with 3 moles of oxygen
what is a arieal animals?
If you have 4.72 x 10^24 atoms of Carbon, how many moles of Carbon do you have?
Question 5 options:
2.84 x 10^48 moles of carbon
4.12 x 10^24 moles of carbon
4.72 x 10^24 moles of carbon
7.84 moles of carbon
Answer:
[tex]7.84\ \text{moles}[/tex]
Explanation:
Number of atoms of carbon = [tex]4.72\times 10^{24}[/tex]
Avogadro's number = [tex]6.022\times 10^{23}\ \text{mol}^{-1}[/tex]
Here we have to divide the number of atoms by the Avogadro's number
[tex]\dfrac{4.72\times 10^{24}}{6.022\times 10^{23}}=7.83792\approx 7.84\ \text{moles}[/tex]
The moles of carbon are [tex]7.84\ \text{moles}[/tex].
Baking soda and vinegar questions
How many moles of O2 are in 125 grams of CO2?
(this is a gram to mole conversion) HELP ME PLEASE!!!
Answer:
20 mole of co2
Explanation:
I hope this helps
A 980 pound horse is diagnosed with strongyle parasites. The veterinarian orders he be given 10 milligrams per kilogram of de-wormer. How many milligrams will he need?
ANSWER ASAP
If the hydrogen atom emits red, blue-green, blue, and violet light, how many energy levels does it have in the visible region of the spectrum?
A. 3
B. 4
C. 5
D. 6
Answers:
Option B. 4.
Explanation:
The visible spectrum of light emitted by a sample of active or excited hydrogen atoms splits into four wavelengths that are basically four distinct levels of energy in the visible region of the spectrum. There four different wavelengths are 410 nm, 434 nm, 486 nm, and 656 nm. These show for colors according to the spectrum and wavelength violet, blue, green, and red, where 656 nm wavelength is most intense on the spectrum.
The hydrogen atom has four energy levels in the visible region of the spectrum. Therefore, option (B) is correct.
What is the electromagnetic spectrum?The electromagnetic spectrum can be defined as the range of frequencies of electromagnetic radiation and their respective photon energies and wavelengths.
The electromagnetic spectrum has electromagnetic waves with frequencies ranging from one Hz to above 1025 Hz, corresponding to wavelengths. This frequency range is divided into separate bands: radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays.
Each band has different characteristics, such as interacting with matter, and its practical applications. When a hydrogen atom emits a different color represents the energy of a different energy level in the visible region of the spectrum.
Therefore, the four colors red, blue-green, blue, and violet light emitted by a hydrogen atom, are of four energy levels in the visible region of the electromagnetic spectrum.
Learn more about electromagnetic spectrum, here:
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Calculate the molarity of 0.300 mol of Na2S in 1.75 L of solution.
Calculate the molarity of 31.3 g of MgS in 955 mL of solution
Answer:
Molarity[Na2S] = 0.1714
Molarity[Mgs] = 0.5811
Explanation:
Given:
0.300 mol [Na2S in 1.75 L]
31.3 g [MgS in 955 mL]
Find:
Molarity
Computation:
Molarity = Number of mole / volume in liter
Molarity[Na2S] = 0.300 / 1.75
Molarity[Na2S] = 0.1714
Molar mass of Mgs = 56.38 g/mol
Number of mole = 31.3 / 56.38
Number of mole = 0.555
Molarity[Mgs] = Number of mole / volume in liter
Molarity[Mgs] = [0.555 / 955]1000
Molarity[Mgs] = 0.5811
Consider the following reaction where K. = 9.52 10 2 at 350 K.
CH,(g) + CC14(2)—2CH2Cl2(g)
A reaction mixture was found to contain 2.21*10-2 moles of CH4(E), 3.8710-2 moles of CC1,(g) and 1.06-10-2 moles of CH,C12(2), in
a 1.00 liter container
Is the reaction at equilibrium?
If not, what direction must it run in order to reach equilibrium?
The reaction quotient, Qc equals
The reaction
A. must run in the forward direction to reach equilibrium
B. must run in the reverse direction to reach equilibrium
C. is at equilibrium
Answer:
The correct answer is A :))
The figure shows different possible transitions of electrons as they move from higher energy states to lower energy states. Which transition will produce the spectrum line with the lowest wavelength in this element’s atomic spectrum?
A. A
B. B
C. C
D. D
Answer:
It is D !!
Explanation:
Just did test
PLEASE HELPPPPPPPPPP
Answer:
Explanation
I am sorry but please give detailed question
Hello, could someone help me with this?
Answer:
c. bigger planets have more gravity and smaller planets have less gravity. i hope this helped :))
Calculate the [H+]
and pH of a 0.000295 M
butanoic acid solution. Keep in mind that the a
of butanoic acid is 1.52×10−5
[H⁺]=6.696 x 10⁻⁵
pH = 4.174
Further explanationGiven
The concentration of 0.000295 M (2.95 x 10⁻⁴ M) butanoic acid solution
Required
the [H+] and pH
Solution
Butanoic acid is the carboxylic acid group. Carboxylic acids are weak acids
For weak acid :
[tex]\tt [H^+]=\sqrt{Ka.M}[/tex]
Input the value :
[H⁺]=√1.52 x 10⁻⁵ x 2.95 x 10⁻⁴
[H⁺]=6.696 x 10⁻⁵
pH = - log [H⁺]
pH = - log 6.696 x 10⁻⁵
pH = 5 - log 6.696
pH = 4.174
What is the mass of 2.14 mol CaCl2?
Answer:
237.5 grams CaCl2
Explanation:
Use the periodic table to calculate the mass of CaCl2
40.078+(35.45*2)=110.97800
Convert: 2.14 mol CaCl2 * 110.98g CaCl2/1 mol CaCl2 = 237.4972 g
The rate constant for a certain reaction is measured at two different temperatures:
temperature k
376.0 °C 4.8 x 10^8
280.0 °C 2.3 x 10^8
Assuming the rate constant obeys the Arrhenius equation, calculate the activation energy Ea for this reaction.
Answer: The activation energy Ea for this reaction is 22689.8 J/mol
Explanation:
According to Arrhenius equation with change in temperature, the formula is as follows.
[tex]ln \frac{k_{2}}{k_{1}} = \frac{-E_{a}}{R}[\frac{1}{T_{2}} - \frac{1}{T_{1}}][/tex]
[tex]k_1[/tex] = rate constant at temperature [tex]T_1[/tex] = [tex]2.3\times 10^8[/tex]
[tex]k_2[/tex] = rate constant at temperature [tex]T_2[/tex] = [tex]4.8\times 10^8[/tex]
[tex]E_a[/tex]= activation energy = ?
R= gas constant = 8.314 J/kmol
[tex]T_1[/tex] = temperature = [tex]280.0^0C=(273+280)=553K[/tex]
[tex]T_2[/tex] = temperature = [tex]376.0^0C=(273+376)=649K[/tex]
Putting in the values ::
[tex]ln \frac{4.8\times 10^8}{2.3\times 10^8} = \frac{-E_{a}}{8.314}[\frac{1}{649} - \frac{1}{553}][/tex]
[tex]E_a=22689.8J/mol[/tex]
The activation energy Ea for this reaction is 22689.8 J/mol
A compound has an empirical formula of PO2 and a molar mass of 126 g/mol. What
is the molecular formula of the molecule?
Answer:
P₂O₄
Explanation:
From the question given above, the following data were obtained:
Empirical formula = PO₂
Molar mass of compound = 126 g/mol
Molecular formula =.?
The molecular formula of the compound can be obtained as illustrated below:
Molecular formula = [Empirical]ₙ
= molar mass
[PO₂] × n = 126
[31 + (16× 2)] × n = 126
[31 + 32] × n = 126
63 × n = 126
Divide both side by 63
n = 126 / 63
n = 2
Molecular formula = [PO₂]ₙ
Molecular formula = [PO₂]₂
Molecular formula = P₂O₄
Choose all the answers that apply.
What does the cardiovascular system do?
transports oxygen and carbon dioxide for the respiratory system
carries nutrients for the digestive system
works with the immune system to fight infection
carries hormones for the endocrine system
sends nerve impulses to the brain and spinal cord
Answer:
All of the above. The CV system transports blood and plasma the do all 4.
Gizmo Warm-up In a chemical reaction, reactants interact to form products. This process is summarized by a chemical equation. In the Balancing Chemical Equations Gizmo, look at the floating molecules below the initial reaction: H2 O2 ---> H2O. How many atoms are in a hydrogen molecule (H2)
Answer:
There are two atoms in one hydrogen molecule.
Explanation:
Hello!
In this case, when going over chemical reactions, we need to realize about the amount of atoms of each element; thus, according to the given chemical reaction by which water is formed:
[tex]H_2+O_2\rightarrow H_2O[/tex]
It is seen there are two hydrogen atoms in the hydrogen molecule, two in oxygen and two hydrogen atoms and one oxygen atom in water; however, these reactions must be balanced according to the law of conservation of mass:
[tex]2H_2+O_2\rightarrow 2H_2O[/tex]
Which means we have two hydrogen molecules with two atoms each, one oxygen molecule with two atoms and two water molecules with two hydrogen atoms and one oxygen atom each.
Best regards!
What is true about the inertia of two cars, Car A of mass 1,500 kilograms and Car B of mass 2,000 kilograms?
OA.
Car A and Car Bhave the same inertia.
B.
Car A has more inertia than Car B.
Oc.
Car Bhas more inertia than Car A.
ОО
D.
Both the cars have negligible inertia.
I’m
Answer:
Car B has more inertia than Car A
Explanation:
Given that,
Mass of car A = 1500 kg
Mass of car B = 2000 kg
Inertia is directly proportional to the mass of an object. Inertia is the measure of the mass of an object.
In this case, the mass of car B is more than that of car A, it means the inertia of car B is more than that of car A.
Hence, the correct option is (c) "Car B has more inertia than Car A".
how does a constructive relationship influence your well being
Answer:
how does a constructive relationship influence your well being
Explanation:
Constructive and deconstructive relationships can influence the well being of different people in different ways. From the point of view who value relationships, dealing with one who repeatedly ruins it is stressful, it slowly damages the health and will continue to do so unless the individual separates himself or herself from the one causing the pain.
what are the two main products of photosynthesis
Answer:
glucose and oxygen gas
Explanation:
oxygenglucose Photosynthesis produce carbon dioxide and water It recombine them to produce oxygen (O2) and a form of sugar called glucose (C6H12O6).You buy butter $3.31 a pound one portion of onion compote requires 1.7 oz of butter how much does the butter for one portion cost round to the nearest cent
Answer:
The butter for one portion cost is $0.35.
Explanation:
HELP ME PLS I WILL GIVE BRAINLYEST 1. Is this organism affecting the lives of humans? 2. How is it affecting the lives of humans? 3. What are some ways to prevent the spread of zebra mussels?
Answer:
Yes it is because it effects the food chain in many ways like it takes more time to get rid of them and they eat parasites that other living things need. We can get rid of zebra mussels by removing them little by little or putting animals in the water that eats them.
Explanation:
Answer:
By encouraging boaters to carefully clen, drain and dry their boats before launching them in different bodies of water.
Explanation:
Is the chemical formula below an Element, Molecule or Compound?
H2SO4
[tex]{ \boxed{ \bold{ \blue{Question}}}}[/tex]
Is H2SO4 an element, compound or molecule?
[tex]{ \boxed{ \bold{ \blue{Answer}}}}[/tex]
H2SO4 (sulphuric acid) is a compound. It is made up of 2 hydrogen atoms, 1 sulphur atom, and 4 oxygen atoms.
_______________________________
[tex] \underline \bold \orange{hope \: it \: helps}[/tex]
A chemical compound is any substance that consists of two or more different elements combined together.
I think that H2SO4 fits this definition of a compound .
HOPE IT HELPS
PLEASE MARK ME BRAINLIEST ☺️
A chemistry student is given 2.00 L of a clear aqueous solution at 43.° C. He is told an unknown amount of a certain compound X is dissolved in the solution. The student allows the solution to cool to 25.° C. At that point, the student sees that a precipitate has formed. He pours off the remaining liquid solution, throws away the precipitate, and evaporates the water from the remaining liquid solution under vacuum. More precipitate forms. The student washes, dries and weighs the additional precipitate. It weighs 0.062 kg1) Using only the information above, can you calculate the solubility of X in water at 25 degrees C?2) If yes calculate it. Round answer to 2 significant digits
Answer:
Follows are the solution to the given points:
Explanation:
In part 1:
As described and in the query, they become precipitated whenever the solutions are refrozen to [tex]25^{\circ} \ C[/tex].
Afterward, certain precipitate becomes replaced as well as the remaining water is evaporated, it implies that certain precipitate remained throughout the solution to just the container when the entire balance is evaporated.
The unrecoverable salt precipitates whenever the solvent is cooled at [tex]25^{\circ} \ C[/tex]and the remaining salt dissolves. It dissolved salt remains whenever the water is evaporated because as dissolved salt value is given that results can be achieved.
In part 2:
They have precipitation weight = [tex]0.063\ g[/tex]. They have a [tex]2 \ L[/tex] the solution, they may disregard the volume increases due to its precipitation. The intensity therefore is [tex]\frac{0.063}{2} = 0.0315 \ \frac{g}{L}[/tex]
please help me! This is due by tomorrow!
Answer:d
Explanation:Since the earth would be closer to the sun the ozone layer would not be able to handle the more powerful ultra violet rays making the earth to hot.
A certain chemical reaction releases of heat energy per mole of reactant consumed. Suppose some moles of the reactant are put into a calorimeter (a device for measuring heat flow). It takes of heat energy to raise the temperature of this calorimeter by . Now the reaction is run until all the reactant is gone, and the temperature of the calorimeter is found to rise by . How would you calculate the number of moles of reactant that were consumed?
Set the math up. But don't do any of it. Just leave your answer as a math expression.
Also, be sure your answer includes all the correct unit symbols.
Answer:
The expression to calculate the number of moles reactants is:
n = 59.714 J / 368000 J/mole
Explanation:
Note: The question is missing some parts. The complete question is as follows:
A certain chemical reaction releases 368.kJ of heat energy per mole of reactant consumed. Suppose some moles of the reactant are put into a calorimeter (a device for measuring heat flow). It takes 4.09J of heat energy to raise the temperature of this calorimeter by 1°C. Now the reaction is run until all the reactant is gone, and the temperature of the calorimeter is found to rise by 14.6°C. How would you calculate the number of moles of reactant that were consumed?
Set the math up. But don't do any of it. Just leave your answer as a math expression.
Also, be sure your answer includes all the correct unit symbols.
Step 1: Determine the quantity of heat required to raise the temperature of the calorimeter by 14.6°C
Quantity of heat required to raise the temperature of the calorimeter by 1°C = 4.09 J
Quantity of heat required to raise the temperature of the calorimeter by 14.6°C = 4.09 * 14.6 = 59.714 J
Step 2: Express the quantity of heat released per mole of reactant in J/mole
368 kJ/mole = 368 kJ/mole * 1000 J/kJ = 368000 J/mole
Step 3: Express the moles of reactant as n and equate it to the energy absorbed by the calorimeter
Let the number of moles of reactant be n
Assuming that there is no heat lost to the surrounding, from the law of conservation of energy, Heat released = Heat absorbed
Heat released = number of moles of reactant * quantity of heat released per mole of reactant
Heat released = n * 368000 J/mole
Heat absorbed by calorimeter = 59.714 J
From the relation above, n * 368000 J/mole = 59.714 J
n = 59.714 J / 368000 J/mole
Therefore, the expression to calculate the number of moles is n = 59.714 J / 368000 J/mole