Answer:
A
Explanation:
because need more number to complete the balance equation
ASAP EASYYYY!!!!!!!!
List three household products that should go to a secure landfill site instead of regular sanitary landfill.
Answer:
A 0.60 mol sample of PCl 3 (g) and a 0.70 mol sample of Cl 2 (g) are placed in a previously evacuated 1.0 L container, and the reaction represented
Explanation:
When filling a weather balloon with gas you have to consider that the gas will expand greatly as it rises and the pressure decreases. Let's say you put about 10.0 moles of He gas into a balloon that can inflate to hold 5000.0L. Currently, the balloon is not full because of the high pressure on the ground. What is the pressure when the balloon rises to a point where the temperature is -10.0°C and the balloon has completely filled with the gas.
Answer:
0.0432 atm
Explanation:
Step 1: Given data for when the balloon is full
Moles of Helium (n): 10.0 molVolume of the balloon (V): 5000.0 LTemperature (T): -10.0 °CIdeal gas constant (R): 0.0821 atm.L/mol.KStep 2: Convert "T" to Kelvin
We will use the following expression.
K = °C + 273.15
K = -10.0°C + 273.15 = 263.2 K
Step 3: Calculate the pressure of He in the balloon
We will use the ideal gas equation.
P × V = n × R × T
P = n × R × T/V
P = 10.0 mol × (0.0821 atm.L/mol.K) × 263.2 K/5000.0 L = 0.0432 atm
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Question 1
Calculate the pressure in a 12 Liter tank containing 2.52 moles of argon gas at 5°C?
a 8.2 atm
b 2.4 atm
с 0.3 atm
d 5 atm
PLEASE HELP
Answer:
D
Explanation:
2. How many moles are in 2.8 Liters of CO2 gas?
Answer:
0.125 moles
Explanation:
2.8 litres is equivalent to 2.8dm³
At STP,
1 mole = 22.4 dm³
x mole = 2.8 dm³
Cross multiply
22.4x = 2.8
Divide both sides by 22.4
x = 2.8/22.4
x = 0.125
What is the charge on the cation in the ionic compound when sodium and sulfur bond?
Answer:
1+
Explanation:
Sodium has one valence electron. When it bonds with a nonmetal like sulfur, it gives up that electron to become a positively charged ion (cation) with a charge of 1+.
6.
Why are estuaries home to diverse marine life not found elsewhere?
is hrimming with
Answer:
Estuaries are bodies of water where rivers meet the sea or a large lake. Rivers spread out and slow when they meet the sea, creating unique conditions that are not found elsewhere. They provide homes for diverse wildlife, including popular fish species.
Where are organelle located
Answer:
organelle are located in da cytoplasm of eukaryotic and prokaryotic cells
Hope this helps!
What are sum things yhu can do to prevent brain damamge
Answer:
not bang your head
Explanation:
Answer:
focus on your surroundings
Eye Color
Genetic
O Environmental
O Both
Answer:
the first cause eye color is genetic
Why should we work to protect estuaries? Select all that apply.
PLSSSS
Answer:
1, 3, and 4
Explanation:
I'm guessing, but those make the most sense
Answer:
3 and 4
Explanation:
The majority of Earth's energy comes from.
1) Deep ocean vents
2) Zone
3) Volcanoes
4) The sun
More bushes of potatoes will be produced if the soil is fertilized more WHAT IS THE INDEPENDENT VAIRABLE AND THE DEPENDENT VARIABLE
Answer:
The dependent variable is the bushes of potatoes while the soil is an independent variable.
Explanation:
An experiment can be defined as an investigation which typically involves the process of manipulating an independent variable (the cause) in order to be able to determine or measure the dependent variable (the effect).
This ultimately implies that, an experiment can be used by scientists to show or demonstrate how a condition causes or gives rise to another i.e cause and effect, influence, behavior, etc in a sample.
Cause and effect can be defined as the relationship between two things or events in which an occurrence one (cause) leads to the occurrence of another (effect).
In an experiment , the variable being manipulated by an experimenter is known as an independent variable while the dependent variable is the event expected to change when the independent variable is manipulated.
Hence, the dependent variable is the bushes of potatoes while the soil is an independent variable.
A bowling ball rests on the floor. The bowling ball is given a push.
Which of the following is the most likely change to happen to the bowling ball?
It will move.
It will gain mass.
It will change colors.
It will change shape.
Answer:
A. It will move.
Which body systems is your blood a part of? Your answer
the internal energy of a substance Is called
Answer:
The internal energy is the total amount of kinetic energy and potential energy of all the particles in the system. ... When the substance melts or boils, energy is put in to breaking the bonds that are holding particles together, which increases the potential energy.
Explanation:
When one element replaces another element the reaction is known as a _ replacement reaction
Answer:
Single replacement reaction
Explanation:
A single replacement reaction, sometimes called a single displacement reaction, is a reaction in which one element is substituted for another element in a compound.
Helllpppppppppppppppppppp
Answer:
90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on eight comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you.!
Explanation:
What is the name for As4010?
Answer: As4010 is the Molecular Formula of Arsenic oxide. its Molecular Weight is 459.68.
hope its help you
have a great day keep smiling be happy stay safe.
Choose the correct name for each acid. Click here
to access the common polyatomic ion sheet.
HNO2:
DONE
HI:
DONE
H3PO4 :
DONE
The correct name of HNO₂, HI and of H₃PO₄ is nitrous acid, hydroiodic acid and phosphoric acid respectively.
What are acids?Acids are those substances in which carboxylic acid (-COOH) is present and pH value of acids falls in the range of 0 to 6.9.
Name of the HNO₂ compound is nitrous acid, of HI is hydroiodic acid and of H₃PO₄ is phosphoric acid.
Hence name of the HNO₂, HI and of H₃PO₄ is nitrous acid, hydroiodic acid and phosphoric acid respectively.
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Answer: HNO2 nitrours acid
HI Hydroiodic acid
H3PO4 phosphoric acid
Explanation: edu
If you had 14.5 moles of gold, how many atoms would you expect to have?
Answer:
(14.5 mol) x (6.022 x 10^23 atoms/mol) = 8.73 × 10^24 atoms
Explanation:
pls mark brainliest
during the charging process, the allied liquid becomes gas. What happens to particles in the liquid
Answer: The particles need energy to overcome the attractions between them. As the liquid gets warmer more particles have sufficient energy to escape from the liquid. Eventually even particles in the middle of the liquid form bubbles of gas in the liquid.
Explanation:
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!! THIS IS DUE IN 10 MINUTES!!!!!
Forensic chemists are analyzing blood samples taken from a murder victim. They run tests for any trace of substances that do not naturally occur in the bloodstream. Nothing odd registers but they do find extremely high levels of caffeine. What does this most likely indicate about the murder victim?
A) They drank a lot of coffee.
B) They worked on a coffee bean plantation.
C) They were poisoned with powdered caffeine.
D) Someone put arsenic in their coffee.
Answer:
c
Explanation:
Answer:they were poisoned with powdered caffeine (C)
Explanation:
I just took the test! And got all the points for this question :) hoped I could help
It is more logical to believe that the complex life sustaining processes of the sun-Earth system were created because they Choose... on one another.
A. rely
B. orbit
C. breathe
D. spin
A sample of methane gas, CH4, occupies 3.25 L at temperature of 19.0 o C. If the pressure is held constant, what will be the temperature be if the volume expands to 10.00 L?
Answer:
625.46 °C
Explanation:
We'll begin by converting 19 °C to Kelvin temperature. This can be obtained as follow:
T(K) = T(°C) + 273
T(°C) = 19 °C
T(K) = 19 °C + 273
T(K) = 292 K
Next, we shall determine the Final temperature. This can be obtained as follow:
Initial volume (V₁) = 3.25 L
Initial temperature (T₁) = 292 K
Final volume (V₂) = 10 L
Final temperature (T₂) =?
V₁/T₁ = V₂/T₂
3.25 / 292 = 10 / T₂
Cross multiply
3.25 × T₂ = 292 × 10
3.25 × T₂ = 2920
Divide both side by 3.25
T₂ = 2920 / 3.25
T₂ = 898.46 K
Finally, we shall convert 898.46 K to celsius temperature. This can be obtained as follow:
T(°C) = T(K) – 273
T(K) = 898.46 K
T(°C) = 898.46 – 273
T(°C) = 625.46 °C
Therefore the final temperature of the gas is 625.46 °C
If you know chemistry please be so kind and take some time to help me with these 2 problems!! Marking brainliest!!
Our balanced equation is Cu + 2AgNO₃ → Cu(NO₃)₂ + 2Ag.
The coefficients of reactants tell us that 1 mole of Cu reacts per 2 moles of AgNO₃. We want to know the mass of Cu that will react with a mass (specifically, 420 g) of AgNO₃. To start, we must convert the mass of AgNO₃ to moles of AgNO₃:
Moles of AgNO₃ = Mass of AgNO₃ ÷ Molar Mass of AgNO₃
Moles of AgNO₃ = 420 g AgNO₃ ÷ 169.88 g AgNO₃/mol AgNO₃
Moles of AgNO₃ = 2.47 moles of AgNO₃.
Since only half as many moles of Cu is consumed in reacting with the AgNO₃, the number of moles of Cu that will react with 2.47 moles of AgNO₃ would be half of 2.47, or 1.24 moles of Cu.
Finally, we can convert the molar quantity of Cu to mass by multiplying the number of moles of Cu by the molar mass of Cu:
Mass of Cu = Moles of Cu × Molar Mass of Cu
Mass of Cu = 1.24 moles Cu × 63.546 g Cu/moles Cu
Mass of Cu = 78.6 g of Cu
So, 78.6 grams of Cu are needed to react with 420 g of AgNO₃.
---
The way to solve the second question is identical to how we solved the first question. The coefficient of Ag is 2, so the molar ratio between the Ag produced and Cu reacted is 2:1. In other words, half as many moles of Ag produced is equivalent to the number of moles of Cu that was consumed in the reaction.
So, as we did with the first question, we first convert the mass of the Ag produced to moles. The molar mass of Ag is 107.8682 g/mol. Dividing 98.5 g of Ag by the molar mass gives us 0.913 moles of Ag produced. The number of moles of Cu that reacted to produce 0.913 moles of Ag would be 0.913/2 = 0.457 moles of Cu.
Lastly, multiplying 0.457 moles of Cu by the molar mass of Cu, we obtain the mass of Cu (in grams) that reacted: 0.457 × 63.546 = 29.0 g of Cu.
So, 29.0 grams of Cu reacted to produce 98.5 grams of Ag.
Note: I have provided the answers for both questions to three significant figures; while 420 technically has only two significant figures, it would seem consistent to treat it as having three since 98.5 has three digits and three significant figures.
What is the mass (in grams) of 3.03 × 1024 molecules of carbon dioxide molecules?
We have that for the Question "" it can be said that the mass (in grams) of 3.03 × 1024 molecules of carbon dioxide molecules is
Amount of CO_2(g)=221.35g
From the question we are told
What is the mass (in grams) of 3.03 × 1024 molecules of carbon dioxide molecules?
Generally the equation for the is mathematically given as
[tex]No moles in 3*02*10^{24}=\frac{3.03*10^{24}}{6.023*10^-{23}}[/tex]
No moles in 3*02*10^{24}=5.03moles
Amount of CO_2(g)=5.03moles *44g/mol
Amount of CO_2(g)=221.35g
Hence
the mass (in grams) of 3.03 × 1024 molecules of carbon dioxide molecules is
Amount of CO_2(g)=221.35g
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Definition of fluid friction
Answer:
Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other
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Which of the following lines from the story indicates a flashback?
25.2 g of CuSO4 6H20 (mm: 267.72 g/mol) is dissolved in 28.0 mL of water, calculate the molarity.
Answer:
3.36 M
Explanation:
Step 1: Given data
Mass of CuSO₄.6H₂O (m): 25.2 gMolar mass of CuSO₄.6H₂O (M): 267.72 g/molVolume of solution (V): 28.0 mL (we will assume it is equal to the volume of water)Step 2: Calculate the moles (n) of CuSO₄.6H₂O (solute)
We will use the following expression.
n = m/M
n = 25.2 g / (267.72 g/mol) = 0.0941 mol
Step 3: Calculate the molarity
Molarity is equal to the moles of solute divided by the liters of solution.
M = 0.0941 mol/0.0280 L = 3.36 M