Answer:
MgBr(aq) + (NH4)3PO4(aq) -------> NH4Br(aq) + Mg3(PO4)2(s)
Explanation:
Acetylene gas, C2H2, reacts with oxygen according to the following equation. If 52.0 g of acetylene react completely with sufficient oxygen, how many grams of carbon dioxide are produced
Answer:
176 g of CO₂.
Explanation:
We'll begin by writing the balanced equation for the reaction. This is illustrated below:
2C₂H₂ + 5O₂ —> 4CO₂ + 2H₂O
Next, we shall determine the mass of C₂H₂ that reacted and the mass of CO₂ produced from the balanced equation.
This is illustrated below:
Molar mass of C₂H₂ = (2×12) + (2×1)
= 24 + 2 = 26 g/mol
Mass of C₂H₂ from the balanced equation = 2 × 26 = 52 g
Molar mass of CO₂ = 12 + (2×16)
= 12 + 32 = 44 g/mol
Mass of CO₂ from the balanced equation = 4 × 44 = 176 g
From the calculations made above,
52 g of C₂H₂ reacted to produce 176 g of CO₂.
pleaseeee help me asap
Answer : i think the answer is A
Explaination : its not D , C i feel like it would be bigger so there would be more transpiration an B less would not have bigger so i hope this helps have a good day ☆
Calculate the moles of benzoic acid (C6H5COOH) in a 55.66 g sample of benzoic acid
answer the following
The reaction of hydrogen sulfide(g) with oxygen(g) to form water(l) and sulfur dioxide(g) proceeds as follows: 2H2S(g) 3O2(g)2H2O(l) 2SO2(g) When 9.82 g H2S(g) reacts with sufficient O2(g), 161 kJ is evolved. Calculate the value of rH for the chemical equation given. kJ/mol
Answer: The value of [tex]\Delta H[/tex] is 1118 .
Explanation:
To calculate the number of moles, we use the equation:
[tex]\text{Moles of solute}=\frac{\text{given mass}}{\text{molar mass}}[/tex]
[tex]\text{Moles of} H_2S}=\frac{9.82g}{34.1g/mol}=0.288mol[/tex]
The balanced chemical reaction is:
[tex]2H_2S(g)+3O_2(g)\rightarrow 2H_2O(l)+2SO_2(g)[/tex]
Given :
Energy released when 0.288 mole of [tex]H_2S[/tex] is reacted = 161 kJ
Thus Energy released when 2 moles of [tex]H_2S[/tex] is reacted = [tex]\frac{161}{0.288}\times 2=1118kJ[/tex]
Thus the value of [tex]\Delta H[/tex] is 1118.
Please help me thanks so much?!?!
Answer:
D.
Explanation:
I did this question in school and got it right.
Answer:
The answer to your question is when the size, shape, or state of matter changes.
Explanation:
Change that does not undergo in the chemical composition.
Julie took a road trip to Canada. She traveled a total of 1,750 miles in 25 hours. Calculate Julie's average speed.
Answer:I think it’s 70 her speed
Explanation: What I did was divid 1,750/25 and it got me 70
Based on the equation below, how many moles of aluminum sulfate (Al2(SO4)3) will be produced from the reaction of 5.8 moles of aluminum hydroxide (Al(OH)3) and excess sulfuric acid (H2SO4)?
If the birthrate is higher than the death rate, the population increases in size. True or false
Answer:
true
Explanation:
Answer:
This is true
Explanation:
if birthrate is higher than death rate then more babies= higher population
In the Haber reaction, patented by German chemist Fritz Haber in 1908, dinitrogen gas combines with dihydrogen gas to produce gaseous ammonia. This reaction is now the first step taken to make most of the world's fertilizer. Suppose a chemical engineer studying a new catalyst for the Haber reaction finds that 112. liters per second of dinitroge are consumed when the reaction is run at 17.2°C and 0.88atm.
Required:
Calculate the rate at which ammonia is being produced. Give your answer in kilograms per second. Be sure your answer has the correct number of significant digits.
Answer: Rate = 0.14 kg/s
Explanation: The Haber reaction is demonstrated below in the balanced equation
[tex]N_{2}+3H_{2}[/tex] → [tex]2NH_{3}[/tex]
To determine the rate of ammonia production, we need to determine the amount of nitrogen gas is being consumed.
As it is a gas, we can find moles by using Ideal Gas Law, whose formula is
PV = nRT
P is pressure
V is volume
n is moles
R is universal gas constant
T is temperature in Kelvin (K)
For the nitrogen gas, temperature will be
T = 273 + 17.2
T = 290.2 K
Solving for moles:
[tex]n=\frac{PV}{RT}[/tex]
[tex]n=\frac{0.88(112)}{0.082(290.2)}[/tex]
n = 4.14 moles
In the Haber reaction, it is consumed 4.14 moles per second of nitrogen gas.
From the balanced equation, we know 1 mol of nitrogen gas produces 2 moles of ammonia, so
[tex]n_{NH_{3}}[/tex] = 2(4.14)
[tex]n_{NH_{3}}[/tex] = 8.48 moles
Number of moles (n) is mass in grams divided by molar mass of the compound:
[tex]n=\frac{m}{M}[/tex]
Molar mass of ammonia is M = 17.031 u, so mass produced is
m = n.M
m = 8.48(17.031)
m = 144.42 g
In kilograms, m = 0.14 kg
When consuming N₂ at a rate of 4.14 moles/s, it will be produced ammonia at a rate of 0.14 kg/s
The table compares the final cost of
groceries after a coupon is used.
Cost Before
Coupon (a)
$20
$21
$22
$23
Cost After
Coupon (b)
$17.50
$18.50
$19.50
$20.50
Which equation models the relationship?
Answer:
y = -2.5 + x
Explanation:
Given the data:
__X____Y
$20 __$17.50
$21 __ $18.50
$22__ $19.50
$23__ $20.50
Using a linear regression calculator :
The linear regression model obtained is :
y = -2.5 + x
Where ; - 2.5 = intercept ; gradient / slope = 1
Plz help can mechanical waves travel through objects?!?!?
Answer:
Mechanical waves travel through matter, causing it to vibrate, expand and contract, move up and down, side to side, or in circles. They include water waves, sound waves, and seismic waves. ... They all travel at the same speed — the speed of light — in a vacuum, but when they come into contact with matter, they slow down.
What cation ion is formed from magnesium iodate
Answer:
Explanation:
Each magnesium atom loses two electrons and each iodine atom gains one electron. So there should be a 1-to-2 ratio of magnesium ions to iodide ions.
Which of the following chemical equations proves that the law of conservation of mass is in effect?
Question 2 options:
Mg2 + LiBr ---> LiMg + Br
2KCl + F2 ---> 2KF + Cl2
Na +O2 ---> Na2O
H20 ---> H2 + O2
Answer:
2KCl + F₂ → 2KF + Cl₂
Explanation:
Law of conservation of mass:
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.
This law was given by French chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
2KCl + F₂ → 2KF + Cl₂
In this equation mass of reactant and product is equal. There are 2 potassium 2 chlorine and fluorine atoms on both side of equation it means mass remain conserved.
All other options are incorrect because mass is not conserved.
Mg₂ + LiBr ---> LiMg + Br
In this equation mass of magnesium is more on reactant side.
Na +O₂ ---> Na₂O
In this equation there is more oxygen and less sodium on reactant side while there is more sodium and less oxygen on product side.
H₂O ---> H₂ + O₂
In this equation there is less oxygen on reactant side while more oxygen on product side.
Help me pls I’m so lost pls ASAP thank you
Answer:
The 2nd answer.
Explanation:
DNA makes people who are related look similar to eachother.
Which interactions and processes contribute to the dissolution of ionic compounds in water?
Part II: Covalent Bonding 1. Now, you will investigate diatomic molecules, those that are made up of two of the same type of atom. Select 2 fluorine atoms. a. How many valence electrons are in each fluorine atom
Answer:
Seven electrons.
Explanation:
There are seven valence electrons in each fluorine atom because it belongs to halogens. Fluorine atom requires one electron to complete its valence shell to become stable so for that it form both ionic and covalent bonds with different atoms. It makes ionic bond with alkali metals by accepting one electron to complete its valence shell and also make covalent bond by sharing of electrons.
PLEASE ANSWER!!! I WILL GIVE POINTS AND BRAINLIEST IF YOU ANSWER CORRECTLY!!! PLEASE DO IT BECAUSE ITS DUE TODAY!!!
Answer:
7 sublimation
8 freezing
9 melting
10 condensation
11 evaporation
Explanation:
1. How many moles are in 700.6 grams of Al203
?
Question 4 (1 point)
60.5 mL of 0.223 M HI is mixed with 86.0 mL of a buffer system composed of 0.385 M sodium acetate and 0.410 M acetic acid. Find the pH of
the final solution
Ko of acetic acid = 1.8 E-5
4561
o a
Ob
Ос
Od
4.673
4.450
4.349
Answer:
pH = 4.349
Explanation:
When HI is added to sodium acetate, CH3COONa, acetic acid is produced as follows:
CH3COONa + HI → CH3COOH + NaI
That means the moles of HI added are the moles of acetic acid produced and the moles of sodium acetate consumed.
Moles of HI:
0.0605L * (0.223mol/L) = 0.01349mol
To find pH of the buffer (Mixture of weak acid, acetic acid, and conjugate base, sodium acetate) we need to solve H-H euation:
pH = pKa + log [CH3COONa] / [CH3COOH]
Where pKa is -log of Ka of the acid: -log1.8x10⁻⁵ = 4.745
And [] could be taken as moles of each specie
Moles CH3COONa:
Inital moles: 0.086L * (0.385mol/L) = 0.03311
Final moles: 0.03311mol - 0.01349mol = 0.01962mol CH3COONa
Moles CH3COOH:
Inital moles: 0.086L * (0.410mol/L) = 0.03256
Final moles: 0.03256mol + 0.01349mol = 0.04875mol CH3COOH
pH = 4.745+ log [0.01962mol CH3COONa] / [0.04875mol CH3COOH]
pH = 4.3497
Rigth answer is:
4.349
adding heat and increasing concentration are meant to cause an increase in....?
Answer:
Adding heat and increasing concentration are meant to cause an increase in the rate of a reaction
Explanation:
The rate of a chemical reaction is defined as the number of moles of reactants converted or products formed pee unit time. It is a measure of how quickly the reactants in a given reaction are used up to form products or how quickly products are formed from reactants.
Factors that affect the rate of a chemical reaction include:
1. Nature of reactants
2. Concentration/pressure (for gases) of reactants
3. Temperature of reaction mixture
4. Presence of light
5. Presence of a catalyst
The effect of increasing the concentration of reactants for a given chemical reaction is that the reaction rate will increase. This is so because, according to the collision theory of chemical reactions, the frequency of collision between reactant particles which results in a chemical reaction (effective collisions) will increase when the reactant particles are crowded together in a small space due to an increase in their concentration.
The effect of increasing temperature or adding heat to a reaction is that the reaction rate increases. When the heat is added to a reactant particles, the number of particles with energies greater than or equal to the activation energy (the minimum amount of energy that reactant particles must possess for effective collisions) increases. Also, the average speed of the reactant particles increases resulting in a greater frequency of collision. Hence, the rate of the chemical reaction increases.
Can we predict geological events based on the type of tectonic plates interaction?
PLZ HELP GIVING BRANLIEST
Answer:
1. Volcanoes and minor earthquakes
2. Volcanoes, earthquakes and fold mountains.
3. Earthquakes and fold mountains.
4. Magma from volcanoes is filled with nutrients that makes land fertile.
Explanation:
answer choices
a. 13
b. 15
c. 28
d. 30
:))
Answer:
15 neutrons
Explanation:
Number of neutrons = atomic mass - number of protons.
So Neutrons = 28 - 13 protons
(Since atom is neutral, number of electrons = number of protons, which is how I get the 13 protons)
Neutrons = 15
What is the molecular geometry for SF2H2?
Trigonal pyramidal
Bent
Linear
Tetrahedral
Trigonal planar
Answer:
Tetrahedral
Explanation:
SF2H2 is a derivative of the sulfuranes (SL4) compounds. The quantum mechanics of these sulfuranes is quite complicated.
Simply, they consist of ten electrons around the sulphur central atom one of which is a lone pair. The electronegativity of fluorine plays a key role in the structure and molecular geometry of SF2H2.
The molecule is found to be tetrahedral in shape by quantum mechanical calculations.
Which part of this chemical process requires energy?
NaOH + HCl → NaCl + H20
A. Breaking bonds in NaOH and HCI
B. Forming bonds in NaCl and H20
C. Forming bonds in NaOH and HCI
D. Breaking bonds in NaCl and H20
in the equation of reaction given, breaking bonds in NaCl and H20 requires energy as they are both endothermic reactions.
What is a chemical reaction?A chemical reaction is a change which results in the permanent rearrangements of atoms of a substance and the formation of a new substance.
In a chemical reaction, bond breaking in endothermic reactions requires energy.
Therefore, in the equation of reaction given, breaking bonds in NaCl and H20 requires energy.
Learn more about bond breaking energy at: https://brainly.com/question/26369483
#SPJ2
Answer:
Breaking bonds in NaOH and HCl
Explanation:
its the correct answer
What is the reaction??
What is the ratio of carbon, hydrogen, and oxygen in most carbohydrates?
A.
1:1:1
B.
1:2:1
C.
1:2:3
D.
2:1:1
E.
2:2:1
Answer:
1:2:1
Explanation:
i just think hai .its just a guess from my side...sorry if i m wrong...
Answer:
1:2:1
Explanation:
Hello person in the future. Good luck with your test and I hope you do great things with your life. You got this!! :D
The amount of gravitational force between two objects depends on
their masses and the between them.
Answer:
Newton's law also states that the strength of gravity between any two objects depends on two factors: the masses of the objects and the distance between them. Objects with greater mass have a stronger force of gravity between them.
Find the mass ratios and atomic ratios of the following compounds.
PCl3
SbF5
BaCl2
Bal2
CCl4
OsO4
17. AgNO3 + KCI
AgCl + KNO3
Explanation:
double replacement is type of reaction of this.it is already balanced.
