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:
Need help on this question asap please
Answer:
The correct answer is - 14.
Explanation:
In the given molecular formula of the aluminum sulphite which is Al2(SO3)3, this molecular formula there different type of elements are bonded together to form this compound each element has a specific number of atoms present. This compound has three elements that are aluminum, sulfur, and oxygen and the atoms are present are:
Al = 2 atoms represented by subscript
S = 3 atoms represented as whole subscripts of sulfite
O = 9 atoms 3 inside bracket and 3 outside of bracket that multiplies.
Thus, total number of atoms are 2+3+9 = 14
Each solute in the table is mixed in a volume of 500 mL of water. Organize the solutions from least conductive to most conductive.
A)
4,2,1,3
B)
4, 1, 2, 3
C)
2, 4, 3,1
D)
1, 3, 4,2
Answer:
b
Explanation:
Answer:
B) 4,1,2,3
Explanation:
Did it on USA Test prep. :)
What is needed for our cells to get energy from our food?
Answer:
cellular respiration is needed for our cells to get energy from our food.
Explanation:
Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.
HELP!! 30 POINTS!!!! What does the energy graph look like for this reaction??
C3H8+5O2 -> 3CO2+4H2O
I have the data, I just need to know how to make the graph, please!!
total enthalpy of reactants= -103.85
total enthalpy of products= =-2147.81
=-2043.96 kJ/mol exothermic reaction
Answer:
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Explanation:
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
Oleic acid's melting point is 14°C and it's boiling point is 360°С. What phase is this substance
at room temperature 25°C?*
A. Solid
B. Liquid
C. Gas
D. Impossible to tell
How many atoms are in 25.0 moles of calcium (Ca)?
Answer:
1.8066e+24 is the answer
Covert 50oC to k
(I’ll mark you as brainlister)
Answer:
323 K
Explanation:
To convert Celcius to kelvin first you need to remember this equation:
C + 273 = K (K = kelvin and C = celsius)
Next, you substitute with what you have given:
50 + 273 = K
Solve the equation by adding 50 and 273
k = 323
what is the advantage of rusting
Answer:
Provide more strength
Explanation:
Rust is metal that has been oxidised . Oxides are usually more fragile and porous than their crystals metal equivalents. Some oxides, such as Aluminum oxide, are useful because they have a thin, strong shell that protects the metal from further corrosion.
When converting from grams to the must be used as a conversion factor
what is the pH when h+=0.045 M?
Answer:
pH≈1.35
Explanation:
-log(0.045)≈1.35
6.
Ammonia (NH3) acts as a weak base in aqueous solution. What is the acid that reacts with this base
when ammonia is dissolved in water?
(A) NHA
(B) H2O
(C) Oxygen, which is always dissolved in water
(D) None of the above, there are no acids in pure water
Answer:
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Ammonia acts as a weak base in aqueous solution. Water is the acid that reacts with this base when ammonia is dissolved in water.
What is a base?According to the Arrhenius concept, base is defined as a substance which yields hydroxyl ions on dissociation.These ions react with the hydrogen ions of acids to produce salt in an acid-base reaction.
Bases have a pH higher than seven as they yield hydroxyl ions on dissociation.They are soapy in touch and have a bitter taste.According to the Lowry-Bronsted concept, base is defined as a substance which accepts protons .Base react violently with acids to produce salts .Aqueous solutions of bases can be used to conduct electricity .They can also be used as indicators in acid-base titrations.
They are used in the manufacture of soaps,paper, bleaching powder.Calcium hydroxide ,a base is used to clean sulfur dioxide gas while magnesium hydroxide can be used as an antacid to cure acidity.
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What causes a substance to be hydrophobic?
Gold can be pounded out to make a foil only a few atoms thick because of
A. Metallic Bonds
B. Ionic Bonds
C. Valence Bonds
D. Covalent Bonds
Answer:
A. Metallic Bonds
Explanation:
Metallic bonding is a type of chemical bonding that arises from the electrostatic attractive force between conduction electrons and positively charged metal ions.
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What number is pointing to the area where magma is less dense due to
heat?
Answer:
I think it's 2
Explanation:
The magma gets so hot, it floats up before cooling and sinking again
. Chalk is made of CaCO 3 . How many molecules are in 5 grams of chalk?
Answer:
20.02 grams of chalk.
Explanation:
C + O2 + CO2
What type of reaction occurs when carbon dioxide is formed from carbon and oxygen?
Answer:
combustion reaction.Explanation:
It is a combination reaction as carbon combines with oxygen to form carbon dioxide. It is a combustion reaction as carbon is burnt in the presence of oxygen.
19) Which one of the following statements describes a chemical property of hydrogen gas?
A) Hydrogen gas has a density of 0.00009 g/cm’ at STP.
B) Hydrogen gas burns in air.
C) Hydrogen gas has a boiling point of 20. K at standard pressure.
D) Hydrogen gas is colorless.
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:
You use a _____ when you are changing compounds
Answer:
coeffeicent!
Explanation:
this balances equations and also changes the amount of a compound/element present
Definition of fluid friction
Answer:
Fluid friction describes the friction between layers of a viscous fluid that are moving relative to each other
Hope it helps
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Thank you
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:
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Which is NOT an application of chemistry to life? *
a. Fertilizers used by farmers
b. Soaps used to clean
c. Medicine used by doctors
d. Hammer used by construction worker
How could a scientist use a sedimentary rock to provide evidence that the right k cycle is a valid scientific model
Answer:
By closely observing the sedimentary rock and the presence of organic materials and mineral grains in sedimentary rocks
Explanation:
The rock cycle explains how the three types of rock are formed over time from each other.
To use a sedimentary rock to prove that the rock cycle is a valid scientific model is by, closely observing the sedimentary rock. when the sedimentary rock is closed observed the principle of superposition will be seen ( i.e. younger segments deposited on top ), the presence of organic materials and mineral grains that can be found in Igneous or Metamorphic rocks can also be seen and this shows that Sedimentary rocks pass through the rock cycle. hence this proves that the rock cycle is a valid scientific model overtime
Two tons of water is pumped into a tank 15 ft. High in 5 minutes. Determine the power output of the pump. (Note: One ton is equal to 2,000 lb. And remember to convert the minutes to seconds.)
Answer:
200 lb•ft/s
Explanation:
From the question given above, the following data were obtained:
Force (F) = 2 tons
Time (t) = 5 mins
Height (h) = 15 ft
Power (P) =?
Next, we shall convert 2 tons to pound. This can be obtained as follow:
1 ton = 2000 lb
Therefore,
2 tons = 2 × 2000
2 tons = 4000 lb
Next, we shall convert 5 mins to seconds. This can be obtained as follow:
1 min = 60 s
Therefore,
5 mins = 5 × 60
5 mins = 300 s
Finally, we shall determine the power of the pump. This can be obtained as follow:
Force (F) = 4000 lb
Time (t) = 300 s
Height (h) = 15 ft
Power (P) =?
P = F × h / t
P = 4000 × 15 / 300
P = 60000 / 300
P = 200 lb•ft/s
Thus, the power of the pump is 200 lb•ft/s
Answer:
It's 200 ft-lb/sec
Explanation:
I did it before!
What can be concluded from the following statements about a property of metats? • Acast-iron skillet on a stove is used to try bacon • A metal spoon left in a pot of soup heating on a stove is too hot to touch - An aluminum playground slide gets hot on a summer day. O A Metals combine with nonmetals.O B. Metals are good insulators. O C Metals conduct electricity D Metals conduct heat.
Answer:
D - metals conduct heat
El etanol combustiona con el oxigeno produciendo dióxido de carbono gaseoso y agua: En un proceso se hacen reaccionar 450.2 g de dioxígeno con 998. 2 g de etanol . a) ¿Cuál de los reactivos es el limitante? b) Calcule la masa de dióxido de carbono que se formará c) ¿ Cuanto del reactivo en exceso quedará sin reaccionar?
Answer:
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Question 15 (3 points)
How are cations and anions related to metals and nonmetals?
Answer:
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Answer:
Cations (positively-charged ions) and anions (negatively-charged ions) are formed when a metal loses electrons, and a nonmetal gains those electrons. ... And all of them form an anion with a single negative charge.
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