Answer:
no
Explanation;
u didnt ask for it
What is the mass of oxygen gas in a 12.2 L
container at 16.0°C and 8.15 atm?
Answer in units of g.
Answer:
grams O₂ = 134 grams
Explanation:
PV = nRT => n = PV/RT
P = 8.15atm
V = 12.2 Liters
R = 0.08206L·atm/mol·K
T = 16.0°C + 273 = 289K
n = (8.15atm)(12.2L)/(0.08206L·atm/mol·K)(289K) = 4.2 moles O₂
grams O₂ = 4.2 moles O₂ x 32g/mol = 134 grams O₂
How many grams of Al2O3 can form from 34.6 grams of Al
Answer: 65.28 g of [tex]Al_2O_3[/tex] will be produced from 34.6 g of Al.
Explanation:
To calculate the moles :
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{Molar Mass}}[/tex]
[tex]\text{Moles of} Al=\frac{34.6g}{27g/mol}=1.28moles[/tex]
The balanced chemical reaction is
[tex]4Al+3O_2\rightarrow 2Al_2O_3[/tex]
According to stoichiometry :
4 moles of [tex]Al[/tex] produce = 2 moles of [tex]Al_2O_3[/tex]
Thus 1.28 moles of [tex]Al[/tex] produce=[tex]\frac{2}{4}\times 1.28=0.64moles[/tex] of [tex]Al_2O_3[/tex]
Mass of [tex][tex]Al_2O_3[/tex]= [tex]moles\times {\text {Molar mass}}=0.64moles\times 102g/mol=65.28g[/tex]
Thus 65.28 g of [tex]Al_2O_3[/tex] will be produced from 34.6 g of Al.
Which product forms from a reaction between calcium (Ca) and phosphorus
(P)?
A. Ca2P3
B. Cap
C. CazP2
D. CaP2
Among these options, the correct formula for calcium phosphide is D. [tex]CaP_2[/tex]. Option D
The product formed from a reaction between calcium (Ca) and phosphorus (P) is calcium phosphide, which is represented by the chemical formula [tex]Ca_3P_2[/tex].
In the reaction between calcium and phosphorus, the calcium atom (Ca) donates two electrons to each phosphorus atom (P). This results in the formation of calcium ions (Ca2+) and phosphide ions (P3-). The ions combine to form the compound calcium phosphide ([tex]Ca_3P_2[/tex]).
The formula [tex]Ca_3P_2[/tex]indicates that three calcium atoms combine with two phosphorus atoms. The numerical subscripts are determined by the charges of the ions involved. Calcium, being a group 2 element, forms ions with a +2 charge (Ca2+), while phosphorus, being a group 15 element, forms ions with a -3 charge (P3-).
The product options provided are:
A. [tex]Ca_3P_2[/tex]
B. Cap
C. [tex]CazP_2[/tex]
D. [tex]CaP_2[/tex]
Among these options, the correct formula for calcium phosphide is D. [tex]CaP_2[/tex].
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Answer: Ca3P2
This is the answer!
Explanation:
A. Ca3P2
B. CaP2
C. Ca2P3
D. CaP
N2+H2---2 NH3?
ASSIGN OXIDATION STATES AND
FIND OXIDIZING AND REDUCING
AGENTS?
Please with steps if possible
Answer:
Oxidizing Agent - Nitrogen
Reducing Agent - Hydrogen
Explanation:
The equation of the reaction is given as;
N2 + H2 --> 2 NH3
Oxidation Rules:
- The oxidation number of an element in it's free state is Zero. This means oxidation state of N2 and H2 are Zero.
- The oxidation number of a neutral compound is the sum of the oxidation state of the individual elements and is equal to zero.
- Oxidation Number of Hydrogen in a compound/Molecule is 1 except in hydrides where it is -1
This means that oxidation number of H in NH3 = 1
Oxidation state of N in NH3;
x + 3(1) = 0
x = -3
The reducing agent loses electrons. Loss of electrons is represented by increase in oxidation Number. The oxidation number of H increases from 0 to + 1
The Oxidizing agent gains electrons. Gain of electrons is represented by decrease in oxidation Number. The oxidation number of N decreases from 0 to -3
An object will not change its velocity if a force acts upon it
a.) True
b.) False
In matrix form structure PVC stands for what?
Answer:
polyvinyl chloride
Explanation:
3.604m + 104.29m + 3.1m + 17.41m. The sum expressed in the correct number of significant figures is
Answer:
128.4 m
Explanation:
3.604m + 104.29m + 3.1m + 17.41m
Add all the values
= 128.404 m
The significant figure rule for addition is for the sum to have the same number of decimal places as the value with the least number of decimal places. In the addition sentence 3.604m + 104.29m + 3.1m + 17.41m, the value with the least number of decimal places is 3.1, which has 1 decimal place. Therefore, we round our sum so that it also has 1 decimal place.
128.404 m
= 128.4 m
I hope this helps!
La
Nd
Pm
Sm
Tb
Но
Er
Tm
Yb
Lu
Ac
Np Pu Am Cm Bk
CH
Es
Fm Md No
100 g of acetic acid (CH, COOH) is dissolved in a 500.0 ml solution. What is the molarity? Report your answer with the
correct number of significant figures
Answer:
3.34 M
Explanation:
Step 1: Given data
Mass of acetic acid: 100 gVolume of solution (V): 500.0 mL (0.5000 L)Step 2: Calculate the moles of acetic acid
The molar mass of acetic acid is 60.05 g/mol.
100 g × 1 mol/60.05 g = 1.67 mol
Step 3: Calculate the molarity of acetic acid
The molarity is equal to the moles of solute divided by the liters of solution.
M = n/V
M = 1.67 mol/0.5000 L = 3.34 M
Am-241 has a half life of roughly 432 years. How much of
a 100 gram sample would remain after 1,296 years?
Answer to the nearest tenth.
Answer:
12.5 g
Explanation:
From the question given above, the following data were obtained:
Half-life (t½) = 432 years.
Original amount (N₀) = 100 g
Time (t) = 1296 years
Amount remaining (N) =?
Next, we shall determine the number of half-lives that has elapse. This can be obtained as follow:
Half-life (t½) = 432 years.
Time (t) = 1296 years
Number of half-lives (n) =?
n = t / t½
n = 1296 / 432
n = 3
Thus, 3 half-lives has elapsed.
Finally, we shall determine the amount of the isotope remaining. This can be obtained as follow:
Original amount (N₀) = 100 g
Number of half-lives (n) = 3
Amount remaining (N) =?
N = 1/2ⁿ × N₀
N = 1/2³ × 100
N = 1/8 × 100
N = 0.125 × 100
N = 12.5 g
Thus, 12.5 g of the isotope is remaining.
can someone please help!!
Answer:
1:aerobic
2:anaerobic
3:aerobic
WS 3.5 more Lewis structures
Do all living things depend on nonliving things to survive? Support your answer with an example.
Answer:
Living things need nonliving things to survive. Without food, water, and air, living things die. Sunlight, shelter, and soil are also important for living things. ... Plants use water from the soil, carbon dioxide from the air, and energy from sunlight to make their own food.
Explanation:
Answer: yes they do here are is an example a tree depends on water to keep it hydrated.
Explanation:
All rocks can form into other types of rocks
Answer:false
Explanation:
Consider the reaction of nitrogen dioxide with molecular hydrogen: 2 NO2(g) + 7 H2(g) + 4H2O(l) + 2 NH3(g) Calculate AH°rxn for this reaction given by manipulation of reactions (i) and (ii): 2 NH3(g) → N2(g) + 3 H2(g) AH°rxn = +92.0 kJ (i) N2(g) +4 H2O(l) ---> 2 NO2(g) + 4 H2(g) AHºrxn = +3.40E2 kJ (ii)
The reaction enthalpy is the heat energy absorbed or evolved from a reaction. The enthalpy of reaction for the given reaction is -432 KJ.
What is enthalpy?Enthalpy is the heat energy evolved or absorbed by a reaction system. The reaction enthalpy can be negative or positive. A positive enthalpy means the heat is absorbed and a negative enthalpy means that the heat is evolved by the system.
The given two reactions 1 and 2 have to be reversed to get the net reaction as follows. Thus the positive enthalpy of these reactions becomes negative when reversed.
[tex]2NO_{2} + 4 H_{2} \rightarrow N_{2} +4H_{2}O\\ -92 KJ\\ \\N_{2} + 3 H_{2} \rightarrow 2NH_{3} - -340 J[/tex]
Now, add these two reactions so that we get the reaction of nitrogen dioxide and hydrogen to give water and ammonia and the enthalpies of the above reactions are also added.
Sum of enthalpies of above two reactions is the enthalpy of the required reaction written as follows:
[tex]2NO_{2} + 4 H_{2} \rightarrow N_{2} +4H_{2}O\\ -92 KJ\\ \\+\\ \\\\N_{2} + 3 H_{2} \rightarrow 2NH_{3} - -340 J\\\\\rightarrow NO_{2} + 7H_{2} \rightarrow 4H_{2}O + 2NH_{3}[/tex]
Enthalpy of net reaction = -92 + -340 = -432 KJ
Therefore, enthalpy of reaction for the given reaction is -432 KJ.
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What mass of carbon dioxide (CO2) is produced when 62.8g of methane (CH4) reacts with oxygen (O2)? Thank you!
Answer:
172.48gExplanation:
CH4 + 2O2 ---> CO2 + 2H2O
moles of methane = 62.8/16 = 3.92
by stotiometry,
3.92 = n
thus mass of co2 = moles× molar mass = 3.92 × ( 12 + 32)
3.92× 44 = 172.48 gramsIf 10 grams of NaHCO3 react with an excess of HCl, what would be the theoretical mass of NaCl produced?
Worth 15 points. I will give brainliest for best answer. Thank you.
Answer:
Explanation:Reaction NaHCO3 + HCl ⇒ NaCl + H2O + CO2
Molar mass M = (22.99+1.008+ 12.01+3·16 ) g/mol. Calculate
Amount of substance n =m/M, n(NaCl) is equal.
M(NaCl) = 58.44 g/mol and mass m= n·M
Which two statements about redox reactions are true?
A. Double-replacement reactions are redox reactions.
B. Acid-base reactions are redox reactions.
C. One type of atom is oxidized and another is reduced.
D. Electrons are transferred from one atom to another.
SUBMIT
Answer:
C. One type of atom is oxidized and another is reduced
D. Electrons are transferred from one atom to another
Explanation:
just took the test, i hope this helps!!
have a nice day and take care of yourself!! :))
One type of atom is oxidized and another is reduced and Electrons are transferred from one atom to another. Therefore, the correct options are options C,D.
What is redox reaction?Any chemical process in which a participating chemical species' oxidation number changes is known as an oxidation-reduction reaction, often known as a redox reaction. The phrase refers to a broad range of processes. Numerous oxidation-reduction processes are as frequent and well-known as fire, metal corrosion and disintegration, fruit browning, respiration, and photosynthesis—basic life processes.
The combined processes of oxidation and reduction are known as redox reactions due to their complimentary nature. The oxidising agent is the reactant that causes the oxidation, while the reducing agent itself reduces this reagent. One type of atom is oxidized and another is reduced and Electrons are transferred from one atom to another.
Therefore, the correct options are options C,D.
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what is diffrent betwenn newtonian and non newtonian?
Answer:
Newtonian fluids have a constant viscosity that does not change and non newtonain fluids have a viscosity that varies.
Explanation
Newtonian fluids have a constant viscosity and a zero shear rate at zero shear stress. Non-Newtonian fluids have a variable viscosity and a varible relationship with shear stress.
What can wind energy be transformed or converted into?
Answer:
Electrical energy
Explanation:
The wind Mill is an example of a device that converts wind energy into electrical energy
A 0.5242-g sample of a compound known to contain only carbon, hydrogen, and oxygen was burned in oxygen to yield 0.9740 g of CO2 and 0.1994 g of H2O. What is the empirical formula of the compound?
Answer:
C₃H₃O₂
Explanation:
From the question given above, the following data were obtained:
Mass of compound = 0.5242 g
Mass of CO₂ = 0.9740 g
Mass of H₂O = 0.1994 g
Empirical formula =?
Next, we shall determine the mass of carbon, hydrogen and oxygen present in the compound. This can be obtained as follow:
For carbon, C:
Mass of CO₂ = 0.9740 g
Molar mass of CO₂ = 12 + (16×2)
= 12 + 32 = 44 g/mol
Mass of C = 12/44 × 0.9740
Mass of C = 0.2656 g
For hydrogen, H:
Mass of H₂O = 0.1994 g
Molar mass of H₂O = (2×1) + 16
= 2 + 16 = 18 g/mol
Mass of H = 2/18 × 0.1994
Mass of H = 0.0222 g
For oxygen, O:
Mass of compound = 0.5242 g
Mass of C = 0.2656 g
Mass of H = 0.0222 g
Mass of O =?
Mass of O = (Mass of compound) – (Mass of C + Mass of H)
Mass of O = 0.5242 – (0.2656 + 0.0222)
Mass of O = 0.5242 – 0.2878
Mass of O = 0.2364 g
Finally, we shall determine the empirical formula. This can be obtained as follow:
Mass of C = 0.2656 g
Mass of H = 0.0222 g
Mass of O = 0.2364 g
Divide by their molar mass
C = 0.2656 /12 = 0.0221
H = 0.0222 /1 = 0.0222
O = 0.2364 /16 = 0.0148
Divide by the smallest
C = 0.0221 / 0.0148 = 1.5
H = 0.0222 / 0.0148 = 1.5
O = 0.0148 / 0.0148 = 1
Multiply through by 2 to express in whole number.
C = 1.5 × 2 = 3
H = 1.5 × 2 = 3
O = 1 × 2 = 2
Empirical formula => C₃H₃O₂
how partition of Bengal mobilize
please help me
Consider these compounds:
a. CuCO3
b. ZnS
c. Ni(CN)2
d. Ag2CrO4
Complete the following statements by entering the letter corresponding to the correct compound. Without doing any calculations it is possible to determine that silver carbonate is more soluble than _________ , and silver carbonate is less soluble than ____________. It is not possible to determine whether silver carbonate is more or less soluble than _______________ by simply comparing Ksp values.
Explanation:
If we compare its solubility products without any calculation then, Magnesium hydroxide is more soluble than compound A and C. Magnesium hydroxide is less soluble than compound D.
- The solubility product of magnesium hydroxide and zinc carbonate is same so it is not possible to determine whether it is more or less soluble than compound B
what is the equation between aqueous sodium carbonate and dilute hydrochloric acid
Answer:
When solutions of sodium carbonate and hydrochloric acid are mixed, the equation for the hypothetical double displacement reaction is: Na2CO3 + 2 HCl → 2 NaCl + H2CO3 Bubbles of a colorless gas are evolved when these solutions are mixed.
What is the age of a bone that emits radiation from carbon-14 at the rate of 0.96
decays/min/g?
Kayla is creating a model to show her understanding of the water cycle. She wants to show that water is constantly cycling between the atmosphere and Earth’s surface.
What would be the BEST type of model for Kayla to create.
A 3-D model of H2O created with gumdrops and toothpicks.
A. A diagram of molecules gaining energy as they being to evaporate and enter the atmosphere.
B. A poster with pictures of lakes, oceans, rivers and ponds.
C. A circular diagram with arrows showing the movement of water between Earth’s surface and atmosphere.
Answer:C
Explanation:
It would be the most visually understandable.It would be easyer to understand what you are modeling.
QUICK PLZZZ why do people run away from the hot weather into the cool ocean on a sunny day? Explain your answer using one of the properties of water?
Question: A first order reaction : B===>C has a half life of 20mins. What percentage shall have reacted after 47minutes
Answer:19.6%
Explanation:
From K=0.693/t
0.693/20 =0.03465min^-1
But rate law is K =2.303/t log a/(a-x)
Substitute the value of k
0.03465=2.303/47 log a / (a-x)
Log a/ (a-x) = 0.7071
a/ (a-x) = 5.094
(a-x)/ a = 1/5.094 = 0.196
Percentage of reactants remaining after 47 minutes= 0.196× 100% = 19.6%
You are presented with a white solid and told that, because of careless labeling, it is not clear whether the substance is mercury(I) nitrate, calcium carbonate, or aluminum nitrate. When you transfer the solid to a beaker and add water, the solid dissolves to give a clear solution. Next, a Na2SO4(aq) solution is added and a white precipitate forms.
Required:
a. What is the identity of the unknown white solid?
b. How many grams of CH3OH must be added to water to prepare 150 mL of a solution that is 2.5 M CH3OH?
Answer:
aluminum nitrate
Explanation:
We already know that calcium carbonate is insoluble in water hence it will not even dissolve in the water.
Mercury(I) nitrate is soluble in water, when sodium sulfate (Na2SO4) is added to mercury(I) nitrate (Hg2(NO3)2), a pale yellow precipitate is formed.
Aluminum nitrate is soluble in water and reacts with Na2SO4(aq) solution according to the reaction, 2Al(NO3)3(aq)+3Na2SO4(aq) ---> Al2(SO4)3(s)+6NaNO3(aq). The precipitate, Al2(SO4)3(s) is a white crystalline hygroscopic solid.
Help Help plz what meaning of the representative elements.
When a large rock falls down a slope and breaks into small pieces, this is called _____________ _______________.
Group of answer choices
Answer: Mechanical weathering
Explanation:
Mechanical weathering breaks rocks into smaller pieces