If a balanced reaction takes place in a sealed container, how should the mass before the reaction begins compare to the mass after the reaction ends will always be equal to the reactant or same.
What is balanced reaction?A balanced reaction or chemical reaction is that the amount or mass of the reactant will always be equal to the amount of the product after the reaction is complete.
If A and B are two reactant then their concentration will be equal to the product which is C and D the number of moles taking participate is also equal.
Therefore, a balanced reaction takes place in a sealed container, the mass before the reaction begins compare to the mass after the reaction ends will be equal as reactant or will be the same.
Learn more about balanced reaction, here:
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If 0.525 moles of O2 are produced, how many moles of KClO3 are decomposed?
Answer:
B. 0.35mol KClO3
Explanation:
The balanced equation in this question is given as follows:
2KClO3 → 2KCl + 3O2
Based on the chemical reaction;
2 moles of KClO3 decomposes into 3 moles of O2
If 0.525 moles of O2 are produced, then:
= 0.525 × 2/3
= 1.05/3
= 0.35mol of KClO3 is decomposed.
In an ecosystem, which of the fcHlowing is NOT a trait of living organisms?
Contains DNA
Can reproduce
Made of cells with membrane
Responds to stimuli
Answer:
responds to a stimuli or made of cells with membrane
Explanation
I need help question 11
Answer: i think it's A.
Explanation: i cant quite explain
PLSSS HELP I AM STUCK ON THIS PROBLEM!!!
Answer:
i can't read it.. maybe upload a visible picture?
Please I need help ASAP!!! THAnk you
What does Hund's rule tell you to do?
Answer:
The rule states that electron occupy each orbital singly first before pairing takes place in a degenerate orbital. These implies that the most stable arrangement of electrons in subsheells is the one with the greatest number of parallel spin
plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz help :) ..
Answer:
Explanation:the best guess I will go with is H but I might be wrong
Which of the following heat transfer methods is when heat is transferred through fluids, such as air?
a
radiation
b
convection
c
conduction
d
none of these
I am wondering how to find out the blood type of my grandson...my daughter is A+..father is in question...she is stressed to the max on the father of this baby boy.
Answer:
A person can identify their blood type at home using a rapid blood typing kit. Using the kit requires a person to pierce a finger with a needle. The kit comes with a card that contains chemicals known as reagents. These test for the presence of the antibodies and Rh factor.
Explanation:
Just like eye or hair color, our blood type is inherited from our parents. Each biological parent donates one of two ABO genes to their child. The A and B genes are dominant and the O gene is recessive. For example, if an O gene is paired with an A gene, the blood type will be A.
What is the formula for silicon tetrabromide?
Answer:
SiBr4
Explanation:
Answer:
SiBr4
hope this helps!
How many grams of carbon dioxide would 6.0E25 molecules be?
Answer:
4383.28 g
Explanation:
First we'll need to convert molecules into moles, we can do so using Avogadro's number:
6.0x10²⁵ molecules ÷ 6.023x10²³ molecules/mol = 99.62 molesThen we will convert 99.62 moles of carbon dioxide (CO₂) into grams, using its molar mass:
99.62 moles CO₂ * 44 g/mol = 4383.28 gHURRY NEED HELP FAST PLEASE blank have a positive charge, blank have no charge, and blank have a negative charge.
(fill in the blanksplease)
(i cant find the science subject so i just put chemistry)
Answer:
Protons have a positive charge.
Neutrons have no charge.
Electrons have a negative charge.
Explanation:
I hope this helps :)
Reproductions is the process by which organisms CANNOT make one or more organisms
True
False
What is the chemical composition of our
air? Name the chemical properties.
Answer:
oxygen(O2), Nitrogen(N2) ,water (H2O),Carbon dioxide (CO2)
I could swear all of these are nobles gases but here’s the question.
Which one of these is NOT a Noble Gas
A) Argon
B) Helium
C) Xenon
D) Neon
If NaOH is added to 0.010 M Al3+, which will be the predominant species at equilibrium: Al(OH)3 or Al(OH)- 4 ? The pH of the solution is 14.00. [Kf for Al(OH) - 4 = 2.0 1033.]
Answer:
Al(OH)- 4,
Explanation:
NaOH added to 0.010 M Al3+
The predominant species at equilibrium will be = Al(OH)- 4, and this because sodium hydroxide ( NaOH ) is a base will readily form a stable complex ion with aluminum ion like ( Al( OH ) - 4 . also the higher the Kf value the more stable the complex ion becomes and the more soluble Al(OH)3 becomes
hence the predominant species at equilibrium is : Al(OH)- 4,
I WILL GIVE BRAINLIEST IF IT IS CORRECT
Match the term and definition Lesson 2.13 Question 6 options: wave height wavelength crest trough 1. top of a wave 2. lowest point of the wave 3. distance between crest and trough 4. Distance from crest to crest or the distance from trough to trough
Answer:
Question 6 options:
2
trough
1
crest
4
wavelength
3
wave height
Explanation:
BRAINLYEST PLEASE
Equilibrium constant Kp for the reaction P4(s) + 6Cl2(g) 4PCl3(l) Kp = 1/ P6Cl2 Kp = P4Cl3/ P6P4 Kp = P4Cl3/ (P6P4) (P6Cl2) Kp = 1/ (P6P4) (P6Cl2)
Answer: [tex]K_p=\frac{1}{[p_{Cl_2}]^6}[/tex]
Explanation:
Equilibrium constant is defined as the ratio of pressure of products to the pressuure of reactants each raised to the power their stoichiometric ratios. It is expressed as [tex]K_p[/tex]
For the given chemical reaction:
[tex]P_4(s)+6Cl_2(g)\rightarrow 4PCl_3(l)[/tex]
The expression for [tex]K_p[/tex] in terms of gaseous is written as:
[tex]K_p=\frac{1}{[p_{Cl_2}]^6}[/tex]
true or false, when something heats up, new energy is created, and when something cools down, energy is destroyed.
What tools and technology
predict weather changes?
Answer:
Observational data collected by doppler radar, radiosondes, weather satellites, buoys and other instruments are fed into computerized NWS numerical forecast models. The models use equations, along with new and past weather data, to provide forecast guidance to our meteorologists
how can a magnet attract an apple
Help I will give brainlest
Answer:
grasslands ia the answer!
Which set up would correctly complete the work for determining how many moles of NaOH will be produced if 10.5 grams of water (H2O) is used?
Answer:
B: 2 mol NaOH/2 mol H2O
Explanation:
The reaction equation is;
H2SO4 + 2NaOH = Na2SO4 + 2H20
Now, to know how many moles of NaOH will be produced for 10.5 grams of water (H2O) used, and since the molar mass of H2O is 18.02 g/mol and number of moles attached to H2O and NaOH in the reaction are both 2 we will have;
10.5g H2O × 1 mol H2O/18.02 g H2O × 2 mol NaOH/2 mol H2O
Thus correct answer is option B
What is the molecular geometry of BCl3
a. otriginal planar
b. trigonal pyraminad
c. tetrahedral
d. liner
Which term describes living things? abiotic biotic
Answer:
biotic
Explanation:
Topics on how humans use energy pls can somebody give me a few..
Answer: Humans use energy to carry out their daily activities, like moving around, working, running etc.
Explanation:
A candle burning is an example of _____.
Answer:
The burning of a candle is both a physical and a chemical change.
Explanation:
Plz mark brainliest thanks
A pile of leaves is lit on fire and covered completely with a fire blanket. The fire goes out. Identify the limiting reactant
Buoyancy, density, ductility and solubility describe the ________ of matter
Answer:
the answer is physical properties
some1 pls do this ty
Have students brainstorm what the long-term effects of seafloor spreading might be and make a list pls
Answer:
Hey let's talk here
Explanation:
jaja
En 50 gr de de agua se disuelven 10 gr de NaCl con una densidad de 1,08 m/cm3. Hallar la M y la m a. 3,06 M y 3,06m b. 3,06 M y 3,4 m c 3,4 M y 3,06 m d 3,5 M y 3,4 m
Answer:
Opcion b. 3.06M y 3.4 m
Explanation:
Nuestra solución se compone de:
Soluto → NaCl (10 g)
Solvente → agua (50 g)
Primero, convertimos la masa de soluto a moles:
10 g . 1mol / 58.45g = 0.171 moles
Convertimos la masa de solvente, de g a kg → 50 g . 1kg/1000 g = 0.05 kg
m → molalidad (tipo de concentración que relaciona los moles de soluto en 1kg de solvente)
m = mol/kg → 0.171 mol/0.05kg = 3.42 m
Para calcular M, necesitamos el volumen de solución, y para eso aplicamos densidad. Antes, sumamos masa de soluto + masa de solvente, para obtener la masa de solución
50 g + 10 g = 60 g de solución
d = m /v → v = m /d → 60g / 1.08g/cm³ = 55.5 cm³
cm³ = mL
M = molaridad, la concentración que relaciona los moles de soluto en 1L de solución, pero que también podemos predecir como los milimoles de soluto en 1 mL de solución.
El volumen de solución está en mililitros → 55.5 mL
Convertimos moles a milimoles → 0.171 mol . 1000 mmol /mol = 171 mmol
M = 171 mmol /55.5 mL → 3.08 M