Answer:
1.6 x 10^4
Explanation:
16,340
with 2 significant figures is
16000
in scientific notation
is 1.6 × 10^4
because 10^4 means
if you move the decimal point 4 spaces then
1.6 becomes 16000
https://brainly.com/question/17715063?
What pressure, in atm, is required to reduce 60.0 mL of a gas at standard conditions to
10.0 mL at a temperature of 25.0 °C?
what volume of O2, collected at 22.0C and 0.958 atm would be produced by the decomposition of 8.15g KClo3?
2KClO3(s)-----2KCl(s)+3)2(g)
Answer:
a
Explanation:
Name the following compound:
CH₂-CH-CH₂ - CH₂ - CH3
1
2
CH₂
CH₂
Answer:
methylhexane.
Explanation:
Because thats the answer.
Explain how each property affects the energy in a wave:
Amplitude:
Wave speed:
Wavelength:
Frequency:
Answer:
frequency
Explanation:
because a wave is equally a frequency
Which condition will decrease the rate of reaction between excess magnesium and hydrochloric acid?
I. Decreasing temperature
II. Increasing mass of magnesium
III. Increasing the concentration of acid
IV.Using magnesium ribbon instead of power
Answers:
A. I and IV
B. I and III
C. II and III
D. II and IV
Answer:
B
Explanation:
The four factors that increase the rate of the reaction:
1.Concentration of the reactants
2.Size of the particles
3.Temperature
4.Catalyst
The fact that water is attracted to itself, a property called:.
How many oxygen atoms are in one mole of carbon dioxide
Answer:
abt 2 moles
Explanation:
1 mole of carbon atoms per mole of carbon dioxide = 6.02 x 1023 carbon atoms. 2 mole of oxygen atoms per mole of oxygen atoms = 2 x 6.02 x 1023 oxygen atoms.
A student has a sample of 1.33 moles of fluorine gas that is contained in a 23.3 L container at 314 K. What is the pressure of the sample? The ideal gas constant is 0.0821 L*atm/mol*K. Round your answer to the nearest 0.01 and include units.
1.4715 atm is the pressure of the sample 1.33 moles of fluorine gas that is contained in a 23.3 L container at 314 K.
What is an ideal equation?
The ideal gas equation, pV = nRT, is an equation used to calculate either the pressure, volume, temperature or number of moles of a gas. The terms are: p = pressure, in pascals (Pa).
Given data:
Volume (V) = 23.3 L
Number of mole (n) = 1.33 moles
Temperature (T) = 314 K
Gas constant (R) = 0.821 atm.L/Kmol
Pressure (P) =?
The pressure inside the container can be obtained by using the ideal gas equation as illustrated below:
PV = nRT
P × 23.3 L = 1.33 moles × 0.0821 ×314 K
P = 1.4715 atm
Therefore, the pressure of the sample is 1.4715 atm.
Learn more about the ideal gas equation:
https://brainly.com/question/23826793
SPJ1
Density is d= m/vol. If a material has a mass of 65.5 g and a volume of 32.5 ml, it has a density of
Using the given formula, the density of the material is 2.015 g/mL
Calculating DensityFrom the question, we are to determine the density of the material
From the given formula
Density = Mass / Volume
And from the given information,
Mass = 65.5 g
and volume = 32.5 mL
Putting the parameters into the equation,
Density = 65.5/32.5
Density = 2.015 g/mL
Hence, the density of the material is 2.015 g/mL.
Learn more on Calculating density here: https://brainly.com/question/24772401
#SPJ1
You and your classmates are working to develop a prototype for a new type of drone. The drone needs to fly and will be controlled by a remote control. Which STEM fields would be most important for you to have knowledge of to build this drone?
A) chemistry and botany
B) astronomy and geology
C) medicine and geology
D) physics and computer science
An Glu amino acid is found in the core (interior) of a water-soluble FOLDED protein (meaning its happy there). What must happen to the pKa of its side-chain group
Glutamic amino acid is the non-essential amino acid and an excitatory neurotransmitter. When Glu is found in the core then the pKa of the side chain group increases.
What is pKa?pKa is the acid strength or the estimate that shows whether the solution is weak or strong acid. pKa less than zero is a strong acid and portrays the bonding of the proton by the acids.
In the Glu amino acid, the value of the pKa of the side chain functional groups increases as the amino acid is found in the interior of the water-soluble folded protein structure.
Therefore, the pKa of the side-chain increases.
Learn more about amino acids here:
https://brainly.com/question/5303148
#SPJ1
in a given homologous series of hydrocarbons, the boiling point generally increases as the size of the molecules increases. the best explanation for this statement is that in larger organic molecules
The boiling point of hydrocarbons generally increases as the size of the molecules increases because more bonds are needs to be broken in larger organic molecules.
What are hydrocarbons?Hydrocarbons are organic compounds which here composed of hydrogen and carbon alone.
Hydrocarbons are grouped into families or homologous series based on a reactive group known as the gincyiial group
The homologous series include
alkanesalkenes alkynesThe boiling point generally increases as the size of the molecules increases because more bonds are needs to be broken in larger organic molecules.
Learn more about hydrocarbons at: https://brainly.com/question/3551546
#SPJ1
A student is studying a sample of neon in a container with a moveable piston (this means the container can change in size). If the sample in the container is initially at a pressure of 768.6 torr when the container has a volume of 93.2 mL, what is the pressure of the gas when the piston is moved so that the volume of the container becomes 140.2 mL?
Answer:
P2=672.1 torr
Explanation:
use the formula P1V1=P2V2, plug in the numbers so your equation should look like this (763.9)x(98.8)=P2(112.3) answer should be P2=672.1 torr
The resultant pressure of the sample of gas is 510.9 torr.
What is the relation between pressure and volume?Relation between the pressure and volume will be represented by the ideal gas equation PV = nRT, and for the given question required equation is:
P₁V₁ = P₂V₂, where
P₁ & V₁ are the pressure and volume of initial sample.
P₂ & V₂ are the pressure and volume of final sample.
On putting values from the question to the equation, we get
P₂ = (768.6)(93.2) / (140.2) = 510.9 torr
Hence resultant pressure is 510.9 torr.
To know more about ideal gas equation, visit the below link:
https://brainly.com/question/15046679
#SPJ1
What kind of radioactive element is useful for dating an object?
a. one with a half-life close to the age of the object
b. one that is present in very small amounts
c. one that decays very quickly into a stable form
d. one that does not undergo transmutation
The kind of radioactive element is useful for dating an object is one with a half-life close to the age of the object.
What are radioactive elements?Radioactive elements are elements that involved in radioactivity and this comprises of atoms or particles in their nuclei whose atomic nuclei are not stable and they emit radiations to maintain stability.
Therefore, The kind of radioactive element is useful for dating an object is one with a half-life close to the age of the object.
Learn more about radioactive elements below.
https://brainly.com/question/10257016
#SPJ1
Identify the balanced chemical equation that represents a decomposition reaction.
2Fe(OH) 3 ⟶ 2FeO 3 + H 2O
CuSO 4 ⟶ CuO + 2SO 3
2Fe(OH) 3 ⟶ Fe 2O 3 + 3H 2O
P 4 + 3O 2 ⟶ P 2O 3
Identify the balanced chemical equation that represents a decomposition reaction.
2Fe(OH) 3 ⟶ 2FeO 3 + H 2O
CuSO 4 ⟶ CuO + 2SO 3
2Fe(OH) 3 ⟶ Fe 2O 3 + 3H 2OP 4 + 3O 2 ⟶ P 2O 3
Explanation:
Answer:
Option C
Explanation:
A decomposition reaction is a type of reaction in which one reactant breaks down in to two or more products.
Here in option C
On both reactant and products side
Fe=2O=6H=6Hence balanced
S + 6 HNO3 → H2SO4 + 6 NO2 + 2 H2O
In the above equation, how many grams of water can be made when 19.5 moles of HNO3 are consumed?
Answer:
117 grams H₂O
Explanation:
To find the amount, you need to (1) convert from moles HNO₃ to moles H₂O (via mole-to-mole ratio from equation) and then (2) convert from moles H₂O to grams (via molar mass from periodic table). The final answer should have 3 sig figs according the the given value (19.5).
S + 6 HNO₃ --> H₂SO₄ + 6 NO₂ + 2 H₂O
Molar Mass (H₂O): 15.999 g/mol + 2(1.008 g/mol)
Molar Mass (H₂O): 18.015 g/mol
19.5 moles HNO₃ 2 moles H₂O 18.015 grams
-------------------------- x ---------------------- x ---------------------- = 117 grams H₂O
6 moles HNO₃ 1 mole H₂O
When servers or sellers break state, county, or municipal alcohol laws when serving or selling alcohol, the server or seller
o is not llable; the establishment's owner will de held criminally liable.
o may be fined, but cannot face criminal charges.
will not be fined, but the establishment could lose its liquor license
When servers break state, county, or municipal alcohol laws when serving alcohol, the server could be fined and the establishment could lose its liquor license.
What is Liquor license?This is defined as governmentally issued permit for the service of alcohol in an area over a period of time.
When alcohol law is broken, there may be a fine or the revoking of the liquor license.
Read more about Liquor license here https://brainly.com/question/4982619
#SPJ1
Use the word bank below to complete the statement. Not all of the words will be used.
Word Bank:
sum. Enthalpy. Heat. Total.
Temperature. Moles. -ΔH. +ΔH.
Hess’s Law describes how the ____ energy of a reaction consists of the ___ of the energy changes of the individual step reactions.
Answer:
Hess’s Law describes how the __Heat__ energy of a reaction consists of the _Enthalpy__ of the energy changes of the individual step reactions
Explanation:
Hess law is a legendary law which is given by
[tex]\\ \rm\Rrightarrow ∆H_{net}=\sum \delta H_r[/tex]
The weak base ionization
constant (Kb) for HCO3 is
equal to:
Weak bases are alkaline solution that does not get completely dissociated. The dissociation constant will be the ratio of the concentration of the products to the reactants.
What is a weak base ionization constant?The weak base ionization constant is the equilibrium constant that is given as the division of the products of the ionization to the concentration of the reactants.
The reaction for HCO₃ is given as:
HCO₃⁻ + OH⁻ ⇄ CO₃²⁻ + H₂O
The value of Ka for the given reaction will be:
Ka = [CO₃²⁻][H₂O] ÷ [HCO₃⁻ ][OH⁻]
Therefore, the Ka of the weak carbonic acid is given as the ratio of the concentration of the products to the reactants.
Learn more about the weak ionization constant here:
https://brainly.com/question/27200344
#SPJ1
Which is a cause of chemical weathering?
A) ice
B) wind
C) oxygen
D) gravity
Answer:
The answer is C.
Explanation:
Oxygen- This is also an important cause of chemical weathering.
what do all atoms of any single element have in common
1. Why does cabbage juice have different colors at different pH levels?
2. Would the solution be acidic or basic when cabbage juice is pink?
1:Red cabbage contains a water-soluble pigment called anthocyanin that changes color when it is mixed with an acid or a base.
2: Basic
a.
Convert these temperatures to Kelvin:
A. -22 °C
b. 206 °C
C. 50 °C
d. 8 °C
why is the ring around saturn
Answer:
Saturn's rings are made up of ice, dust, rocks, moons and other satellite that orbit the gas giant as its equator, where gravity is strongest.
Explanation:
(need help asap)
How much of each reactant(zinc and hydrochloric acid) is needed to produce 150 grams of hydrogen gas
Explanation:
150 grams is .15 liters
1 mole of gas at STP occupies 22.414 liters
.15 liter of hydrogen represents .15/22.414 =
0.0066922 moles of H2
equation is
Zn + 2HCl → ZnCl2 + H2
1 mole of Zn will make 1 mole of H2
0.0066922 moles of Zn will make 0.0066922 moles of H2
To convert this molar quantity of zinc into grams we simply multiply by the atomic mass of zinc, which is
65.38 g/mol;-
Mass of Zn required = 0.0066922 moles * 65.38 g/mol = 0.4375390381 grams
https://www.quora.com/How-many-grams-of-Zinc-would-you-need-to-react-with-Hydrochloric-acid-to-produce-1-L-of-H2-gas
A photon of light has a wavelength of 0.050 cm. Calculate its energy.
Answer:
3.96×10^−22J
Explanation:
First find the frequency of the photon from the equation
c=fλ
∴f=c/λ
=3×10⁸m/s / 0.050×10^−2m
=6×10¹¹Hz.
Energy of such photons is quantized and given by
E=hf
=(6.6×10^−34)(6×10¹¹)
=3.96×10^−22J
Among electromagnetic waves, UV rays are most dangerous because exposure to these radiation cause serious problems in living organism. The energy of photon is 3.96×10⁻²²J.
What is electromagnetic wave?Electromagnetic wave is a wave which contain two component one is electric component and other is magnetic component. The electric and magnetic component are perpendicular to each other. There are so many wave that comes under electromagnetic wave like infrared wave , radio wave
There is a relation between energy of wave. frequency of wave, and wavelength of wave
Mathematically,
E=hc/λ
where,
E = energy of electromagnetic wave
h is planks constant having value 6.67×10⁻³⁴js
c is speed of light that is 3×10⁸m/s
λ is the wavelength of electromagnetic wave
frequency=speed of light/wavelength
=3×10⁸m/s / 0.050×10⁻²m
=6×10¹¹Hz.
E=h×frequency
=(6.6×10⁻³⁴)(6×10¹¹)
=3.96×10⁻²²J
Therefore, the energy of photon is 3.96×10⁻²²J.
To know more about electromagnetic wave, here:
https://brainly.com/question/12289372
#SPJ2
When electrical ___ betweens protons is greater than strong forces, the nucleus will be unstable.
Answer:
repulsion
Explanation:
An aluminum aerosol can will burst if the pressure inside reaches 210.0 psi. if the can initially contains an ideal gas at 459.5 kpa at 298.15 k, at what temperature (in k) will the can burst?
The can will burst at 938.45 K.
What is Gay Lussac's Law ?Gay Lussac's Law states that the pressure of a fixed amount of gas is directly proportional to the absolute temperature at constant volume.
i.e. P ∝ T
P= KT
P₁ = KT₁
P₂ = KT₂
Here we have considered that the gas is at two different temperatures and pressures which is denoted by T₁ , T₂ and P₁ , P₂
It can also be written as
(P₁ /P₂ ) = (T₁ / T₂)
It is given that
P₂ = 14.29 atm
P₁ = 4.535 atm
T₁ = 298.15 K
T₂ = ?
T₂ = (298.15 * 14.29 )/ 4.54
T₂ = 938.45 K
Therefore the can will burst at 938.45 K.
To know more about Gay Lussac's Law
https://brainly.com/question/2683502
#SPJ1
12 Describe In your own words, describe the glassblowing process.
Explanation:
To give the glass its final shape and size, it is blown into with a blowpipe, creating a sort of bubble of glass. To carry out this process, the blowpipe holding the glass must be placed on a steel stand. Then, the glass artist has to blow into the blowpipe while rotating it at the same
explain how these concepts are related: species, population, and community
Answer:
Organisms that belong to the same species, form groups, and interact together in the same environment make the level of the population whereas a community has groups of different species living together in an environment. Species are the group of individuals that are genetically related to each other.
