Answer:
The range of variation under which a species can function and reproduce is called its tolerance range.
Explanation:
PLZZZ MARK ME BRAINLIESTTTTT
what are factors that affecting the boiling point of liquid?
Which is the first step in the fusion process?
Explanation:
The first step of the Hydrogen fusion process: a nucleus of Deuterium (2H) is formed from two protons with the emission of an antielectron and a neutrino. The basic Hydrogen fusion cycle involves four Hydrogen nuclei (protons) and two electrons and yields a Helium nucleus, two neutrinos and six photons.
Answer:
C just took it
Explanation:
A student has a sample of 1.42 moles of fluorine gas that is contained in a 28.1 L container at 305 K. What is the pressure of the sample?
Answer:
P = 1.26 atm
Explanation:
Given that,
The number of moles, n = 1.42 mol
Volume, V = 28.1 L
Temperature, T = 305 K
We need to find the pressure of the gas. The ideal gas law is as follows :
[tex]PV=nRT\\\\P=\dfrac{nRT}{V}[/tex]
R = 0.0821 L-atm/mol-K
Put all the values,
[tex]P=\dfrac{1.42 \times 0.0821\times 305 }{28.1 }\\\\P=1.26\ atm[/tex]
So, the pressure of the gas is 1.26 atm.
Which substance has Delta.Hf defined as 0 kJ/mol?
A. H2O (s)
B. Ne (l)
C. F2 (g)
D. CO2 (g)
Answer:
its actually c
Explanation:
Give the following number of protons, neutrons, and electrons in the following isotope:
ll5Ag
Group of answer choices
47,47.64
47,47.68
47,47.47
Answer:
47, 68, 47
Explanation:
Let's consider the following isotope: ¹¹⁵Ag.
If we look in the Periodic Table, the atomic number of Ag is 47, that is, silver has 47 protons.
Since ¹¹⁵Ag is neutral it must have the same number of protons that of electrons. Then, it also has 47 electrons.
The number 115 in ¹¹⁵Ag stands for the mass number, which is the sum of protons and neutrons. Then, the number of neutrons is:
p⁺ + n⁰ = 115
n⁰ = 115 - p⁺ = 115 - 47 = 68
The number of protons, neutrons, and electrons in ¹¹⁵Ag is: 47, 68, 47.
For the reaction 2Na + Cl2 2NaCl, calculate the percent yield if
155.0 g of chlorine (Cl2) should be produced and your experiment
produced 143 g (C12).
Answer:
[tex]Y=92.25\%[/tex]
Explanation:
Hello there!
In this case, according to the given chemical reaction, it is possible for us to calculate the percent yield by dividing the actual yield of 143 grams of gaseous chlorine by the theoretical yield of 155 g of this gas. In such a way, we proceed as follows:
[tex]Y=\frac{143g}{155g} *100\%[/tex]
Which has a result of:
[tex]Y=92.25\%[/tex]
Regards!
How many total ions are there in 5.00 moles of cobalt (II) bromide?
how can miscible liquids that different boiling points be separated
Answer:
By boiling and further condensing the liquid with the lowest boiling point.
Explanation:
Hello there!
In this case, according to the attached diagram, it turns out possible for us to infer that the mechanism whereby miscible liquids with different boiling points are separated is distillation, because the flask is heated until the boiling point of the liquid with the lowest value, in order to boil it and subsequently condense it, whereas the liquid with the highest boiling point remains in the flask; and therefore, the two liquids are separated.
Regards!
g For the reaction Ag2S(s)⇌2Ag+(aq)+S2−(aq)Ag2S(s)⇌2Ag+(aq)+S2−(aq), Keq=2.4×10−4Keq=2.4×10−4, and the equilibrium concentration of sulfide ion is [S2−]=0.0023M[S2−]=0.0023M. What is [Ag+]atequilibrium?
Answer:
0.32 M
Explanation:
Step 1: Write the balanced reaction at equilibrium
Ag₂S(s) ⇌ 2 Ag⁺(aq) + S²⁻(aq)
Step 2: Calculate the concentration of Ag⁺ at equilibrium
We will use the formula for the concentration equilibrium constant (Keq), which is equal to the product of the concentrations of the products raised to their stoichiometric coefficients divided by the product of the concentrations of the reactants raised to their stoichiometric coefficients. It only includes gases and aqueous species.
Keq = [Ag⁺]² × [S²⁻]
[Ag⁺] = √{Keq / [S²⁻]}
[Ag⁺] = √{2.4 × 10⁻⁴ / 0.0023} = 0.32 M
Please hurry! And help!!
Best answer gets marked Brainliest!
NO LINKS or question will be REPORTED!
When two nitrogen atoms combine, they form a
A) Compound
B) Liquid
C) mixture
D) Molecule
Answer:
I guess the answer is compound
Explanation:
Coz compound it is on there playing with me again Go ahead and paste it in the class
1. The density of gasoline is 0.7 g/ml. What is the mass of 400L of gasoline?
Answer:
280,000g
Explanation:
0.7g/mL x 1000mL/1L x 400L = 280,000g
Once the concentration of the common ion is increased______.
a. the solubility of the ionic solid increases.
b. the solubility of the ionic solid decreases.
c. the solubility of the common ion increases.
d. the solubility of the common ion decreases.
Answer:
B
Explanation:
A “happy” atom is one that has a _________ valence orbital. octet rule
Answer:
Hello There!!
Explanation:
I believe the answer is 8.
hope this helps,have a great day!!
~Pinky~
Charles's Law: This law essentially states that gas volume has a direct relationship to temperature. If a football is inflated indoors during winter and then taken outside, what volume will be occupied inside the football if indoors the football is inflated at 26°c taking up 100 cm3, and it is 13°c outside?
Answer:
V2 = 95.65 cm^3 or 96 cm^3 (depends on if you want to round up or not)
Explanation:
Charles law is V1 / T1 = V2 / T2 (1 means initial and 2 means final condition)
For Charles law, you must use kelvin scale for temperature. So to convert from C to K, you add 273.15
T1 = 26 +273.15 = 299.15 K
T2 = 13 + 273.15 = 286.15 K
Now plug in the values,
100 / 299.15 = V2/286.15
V2 = 95.65 cm^3 or ~ 96 cm^3
The answer should make sense because if they have a direct relation, if one goes down then the other goes down. For final condition, we lowered the temperature so our volume should have decreased too and it did (we went from 100 to 96 cm^3)
AgI + KNO3 what type of reaction is this
Answer:
all + kn03
Explanation:
and the reaction is single replacement
What kind of changes do chefs make to food?
[readworks]
Calculate the amount of 0.1 M acid needed to neutralize 10,000 liters of pH 8.0 water.
The acid is Carbonic Acid (H₂CO₃) please show work!
Answer:
50mL of the 0.1M acid are needed to neutralize the solution
Explanation:
To solve this question we have to find the moles of OH- present in the basic solution. Then, using the chemical equation:
2OH- + H2CO3 → 2H2O + CO3²⁻
We can find the moles of carbonic acid and its volume using the 0.1M solution as follows:
Moles OH-:
pH = -log [H+]
10^-pH = [H+]
[H+] = 1x10⁻⁸M
As:
[OH-] = Kw / [H+]
[OH-] = 1x10⁻¹⁴ / 1x10⁻⁸
[OH⁻] = 1x10⁻⁶M
The moles in 10000L are:
10000L * (1x10⁻⁶moles OH- / L) = 0.01 moles OH-
Moles H₂CO₃:
0.01 moles OH- * (1mol H₂CO₃ / 2mol OH⁻) = 0.005 moles H₂CO₃
Volume:
0.005 moles H₂CO₃ * (1L / 0.1moles) = 0.05L =
50mL of the 0.1M acid are needed to neutralize the solutionCalculate the molar mass of Ca3(PO4)2
934.32 g Ca3(PO4)2 =______
moles Ca3(PO4)2
Answer:
Molar mass of Ca₃(PO₄)₂ = 310.18 g/mol934.32 g Ca₃(PO₄)₂ = 3.01 moles Ca₃(PO₄)₂Explanation:
The molar mass (MM) of Ca₃(PO₄)₂ can be calculated as follows:
MM of Ca₃(PO₄)₂ = (MM of Ca)*3 + [(MM of P) +(MM of O)*4]*2MM of Ca₃(PO₄)₂ = 310.18 g/molNow we can convert 934.32 g of Ca₃(PO₄)₂ into moles:
934.32 g ÷ 310.18 g/mol = 3.01 molesPls help me with this
Answer:
[tex][I_2]=[Br]=0.31M[/tex]
Explanation:
Hello there!
In this case, according to the given information, it is possible for us to set up the following chemical equation at equilibrium:
[tex]I_2+Br_2\rightleftharpoons 2IBr[/tex]
Now, we can set up the equilibrium expression in terms of x (reaction extent) whereas the initial concentration of both iodine and bromine is 0.5mol/0.250L=2.0M:
[tex]K=\frac{[IBr]^2}{[I_2][Br_2]} \\\\1.2x10^2=\frac{(2x)^2}{(2.0-x)^2}[/tex]
Thus, we solve for x as show below:
[tex]\sqrt{1.2x10^2} =\sqrt{\frac{(2x)^2}{(2.0-x)^2}} \\\\10.95=\frac{2x}{2.0-x}\\\\21.91-10.95x=2x\\\\21.91=12.95x\\\\x=\frac{21.91}{12.95} \\\\x=1.69M[/tex]
Therefore, the concentrations of both bromine and iodine are:
[tex][I_2]=[Br]=2.0M-1.69M=0.31M[/tex]
Regards!
What happens in radioactive decay?
O A. An electron is lost to form a negatively charged particle.
O B. An unstable nucleus breaks down into smaller parts.
O C. Two smaller nuclei are joined to form one larger nucleus.
O D. A large nucleus breaks apart to form smaller nuclei.
SHIRME
A radioactive atom will spontaneously release radiation in the shape of energy rather than particles in order to transition into a more steady state.
Why is something radioactive?Radioactivity, as its name suggests, seems to be the act of generating radiation without any external cause. This is carried out by an unstable atomic nucleus that "wants" to abandon certain power in order to change to a more stable form.
Are people radioactive at all?Absolutely, since humans consume radioactive materials from the environment through food, drink, and air, our bodies are inherently radioactive. Our bodies take these substances in and store them in our bones, tissues, and organs. We also breathe them in and consume them.
To know more about radioactive visit:
https://brainly.com/question/1770619
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Select ALL of the abiotic factors
lesson 5.01
Question 1 options:
air
light
fungi
soil
salinity
Answer:
I think it should be
salinity and
light
If a buffer solution is 0.190 M in a weak acid ( a=3.6×10−5) and 0.480 M in its conjugate base, what is the pH?
Solution :
[tex]pk_b = -log ( K_b)\\\\pk_b = - log ( 3.6 \times 10^{-5})\\\\pk_b = 4.44[/tex]
We know, pH of this solution :
[tex]pH = pK_a + log ( \dfrac{|conjugate\ base|}{|weak \ acid|}\\\\pH = 4.44 + log(\dfrac{0.480}{0.190})\\\\pH = 4.44 + 0.40\\\\pH =4.84[/tex]
Hence, this is the required solution.
PPLLLLLZZZZZ HELPPPPPPPPP ME WITH THIS QUESTION BRAINLIEST ANY ANSWERS WOULD BE GREATLY APPRECIATED :) chemical reaction will stop when the limiting reactant is used up.
Question 1 options:
True
False
tetrachlorination of methane
Answer:
Correct option is
CCI 4
Chlorination of methane follows free radial mechanism. When chlorine is present in small quantity then only single substitution takes place, but if chlorine is present in excess then all the hydrogen is substituted by chlorine. So tetra substituted product is formed. The following is the reaction of chlorination of methane:
solution
What is the lowest whole number ratio between the aluminum ion and carbonate ion in the compound, aluminum carbonate?
A. 2 :1
B. 1: 1
C. 3 : 2
D. 1 : 2
E. 2 : 3
Answer:
E. 2 : 3
Explanation:
Aluminium carbonate is a neutral compound made by aluminium ion, Al³⁺ and carbonate ion, CO₃²⁻. As is neutral, the formula must be:
Al₂(CO₃)₃.
2 Al₃⁺ = 6 positives charges
3 CO₃²⁻ = 6 negative charges
Thus, the simplest whole number ratio between Al³⁺ and CO₃²⁻ must be:
2:3
And right answer is:
E. 2 : 3Which type of reaction is represented by the generic equation AB + CD Right arrow. AD + CB?
combustion
decomposition
single replacement
double replacement
Answer:
Double replacement
Explanation:
took notes when learned on edge
Answer:
double replacement
Explanation:
just took test
identify two conjugate base for each compound HCN and HBr
The conjugate base of HCN is CN^-
The conjugate base of HBr is Br^-
Considering the side chain of each of the amino acids at pH 7.4, is that amino acid classified at neutral, basic, or acidic? You are currently in a sorting module. Turn off browse mode or quick nav, Tab to items, Space or Enter to pick up, Tab to move, Space or Enter to drop. Neutral Basic Acidic
Answer:
Considering the side chain of each of the amino acids at pH 7.4, is that amino acid classified at neutral, basic, or acidic? You are currently in a sorting module. Turn off browse mode or quick nav, Tab to items, Space or Enter to pick up, Tab to move, Space or Enter to drop. Neutral Basic Acidic
The answer is in the the images. I have placed all the structures in the specific boxes. I hope this helps.
"When your heart was an open book" is an example of of
A. simile
B. metaphor
C. alliteration
D. all of the above
B. metaphor
The answer is metaphor, because it can't possibly be other thing.
Which of the following is true about magnets? SELECT AN ANSWER
A.Magnets are not made of metal.
B. Magnets can attract other objects.
C. Magnets are made in one color.
D. All trains are made of magnets.