Answer:
yes
Explanation:
bc i wanted to know how they taste btw they taste like metal not good 5/10
might try again but not recommended
my favorite one is a quarter probably
If the volume of a solution is 25.6 L and its molarity is 8.20 M, how many moles of solute are
dissolved?
210 mol
O the molar mass of the solute is required to calculate the moles
O 3.12 mol
O 0.320 mol
Answer:
210 moles
Explanation:
From the question given above, the following data were obtained:
Volume of solution = 25.6 L
Molarity = 8.20 M
Mole of solute =?
Molarity is simply defined as the mole of solute per unit litre of water. Mathematically, it can be expressed as:
Molarity = mole /Volume
With the above formula, the mole of solute dissolved can be obtained as follow:
Volume of solution = 25.6 L
Molarity = 8.20 M
Mole of solute =?
Molarity = mole /Volume
8.20 = mole / 25.6
Cross multiply
Mole = 8.20 × 25.6
Mole = 209.92 ≈ 210 moles
Thus, the mole of solute dissolved in the solution is 210 moles
What is the equilibrium constant for the reaction
SO2(g) + NO2(9) = SO3(g) + NO(g)?
А. Keq: [S03)(S02]
[NO][NO2]
B. Keq: [SO2)(NO2]
[SO3)(NO]
C. Keq: [SO3)3(NO]
[SO2)2(NO2)2
D. Keq: [SO3)(NO]
[SO2]NO2]
Answer:
D. Keq: [SO3][NO] /[SO2]NO2]
Explanation:
Hello!
In this case, according to the process to set up equilibrium expressions for chemical reactions at equilibrium, we realize we need to write up the concentration of products on top and that of reactants on bottom; thus, for there chemical reaction herein specified, we obtain:
[tex]Keq=\frac{[SO_3][NO]}{[SO_2][NO_2]}[/tex]
Thereby, the answer is D. Keq: [SO3][NO] /[SO2]NO2].
Best regards!
Answer:
D
Explanation:
Hellpppp I need help i don’t get this at all please help!!
Answer:
I'm pretty sure it's the second one that it contains fewer oxygen atoms
how many atoms are in 1.7 mols of CHF3
Given :
Number of moles of CHF₃ is 1.7 .
Solution :
We know, 1 mole of any complex contains 6.022 × 10²³ molecules.
Let, 1.7 moles of CHF₃ contains n numbers of molecules.
So, n = 1.7 × 6.022 × 10²³ molecules
n = 10.2374 × 10²³ molecules
n = 1.0237 × 10²³ molecules
Hence, this is the required solution.
The Rock Cycle moves in a specific order. True or
False
Answer:
it is false
Explanation:
it goes in different ways not in order
What is the number of nitrogen molecules that reacted with excess hydrogen to make 2x10^10 molecules of ammonia
According to stoichiometry and mole concept,1×10¹⁰ molecules reacted with excess hydrogen to make 2 x 10¹⁰ molecules of ammonia.
What is stoichiometry?Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.
Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is important while balancing chemical equations.
In the given example, as 1 molecule of nitrogen produces 2 molecules of ammonia
∴2 x 10¹⁰ molecules of ammonia will be produced when 2 x 10¹⁰×1/2=1×10¹⁰ molecules .
Thus, 1×10¹⁰ molecules reacted with excess hydrogen to make 2 x 10¹⁰ molecules of ammonia.
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3. What is the molar mass of O2? Round to nearest whole number.
8
O
16
32
64
Answer:
Molar mass of O is = 16
Molar mass of O2 = 32
ANSWER ASAP!
The sun provides what almost everything on Earth needs to go—energy, or heat. Heat causes liquid and frozen water to evaporate into water vapor gas, which rises high in the sky to form clouds... clouds that move over the globe and drop rain and snow. This process is a large part of the water cycle.
Answer:
whats the question so i can answer?
The diagram below shows the different phase transitions that occur in matter. Three bars are shown labeled Solid, Liquid, and Gas. They are connected by arrows labeled 1 to 6. Arrow 1 points from liquid to gas; arrow 2 from solid to liquid, arrow 3 from solid to gas, arrow 4 from gas to liquid, arrow 5 from liquid to solid, and arrow 6 from gas to solid. Which arrow would most likely represent the phase change that involves the same amount of energy as arrow 1? 2 3 4 5
Answer:
4
Explanation:
Got it right edge 2021
Answer:
4 or C
Explanation:
i took the quiz
Part IIB. Scoring Scheme: 3-3-2-1. Calculate and enter the molarity of your three HCl standardization trials using the volume of standardized NaOH solution required for each and the average molarity of the NaOH solution from the standardization trials with KHP. You should report 3 significant figures, e.g. 0.488 M.
Answer:
0.214 M.
Explanation:
The equation showing the balanced chemical reaction between HCl and NaOH is given below;
HCl + NaOH ------------------> NaCl + H2O
Therefore, in entry one(1) the volume of HCl solution is 10mL and the volume of NaOH solution is 21.5 mL. Hence, the molarity of HCl solution is given below;
NB: the molarity of NaOH = 0.1 M.
The molarity of HCl = molarity of NaOH × volume of NaOH/ volume of HCl solution.
The molarity of HCl = 0.1 × 21.5 / 10 = 0.215 M.
For entry two(2), the volume of HCl solution is 10mL and the volume of NaOH solution is 21.3 mL. Hence, the molarity of HCl solution is given below;
The molarity of HCl =0.1 × 21.3 / 10 = 0.213 M.
For entry three(3), the volume of HCl solution is 10mL and the volume of NaOH solution is 21.43 mL. Hence, the molarity of HCl solution is given below:
Molarity of HCl = 0.1 × 21.43 / 10 = 0.2143 M.
Therefore, let's take the average of all the molarities of HCl in the three entries.
Hence, 0.215M + 0.213M + 0.2143M / 3 = 0.214 M.
The water vapor that condenses low to the ground and becomes visible is known as ___________.
5) Calculate the molality of 0.210 mol of KBr dissolved in 0.075kg pure
water?
Answer:
2.8 m
Explanation:
From the question given above, the following data were obtained:
Number of mole KBr = 0.210 mole
Mass of water = 0.075 kg
Molality of KBr =?
Molality is simply defined as the mole of solute per unit kg of water. Mathematically, it can be expressed as follow:
Molality = mole of solute / Kg of water.
With the above formula, we can obtain the molality of the KBr solution. This can be obtained as follow:
Number of mole KBr = 0.210 mole
Mass of water = 0.075 kg
Molality of KBr =?
Molality = mole of solute / Kg of water.
Molality = 0.210 / 0.075
Molality = 2.8 m
Therefore, the molality of the KBr solution is 2.8 m.
How many moles of copper ar there in the copper sample shown?
95.33
A.1.5 mol
B. 29 mol
C. 95.33 mol
D 6.02×10to the 23 power mol
Answer:
1.5 mol
Explanation:
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 1.50moles are there in 95.33 grams of copper. The correct option is option A.
What is mole?The SI unit of amount of substance in chemistry is mole. The mole is used to measure the quantity or amount of substance. We know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number. The stoichiometry represents the number of moles.
Mathematically,
number of moles of copper=given mass of copper÷ molar mass of copper
Molar mass of 1 mole of copper=63.55g/mol
mass of copper=95.33g
Substituting all the given values in the above equation, we get
number of moles of copper=95.33/63.55
number of moles of copper =1.50moles
Therefore, 1.50 moles are there in 95.33 grams of copper. The correct option is option A.
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3. Beta decay is when a proton and ______ are emitted from a neutron.
a. an electron
b. another proton
c. a neutron
d. positron
Answer:
d. positron
that's the answer brainly tells me I need to write at least 20 characters and that's d u m b.
What does Nocturnal mean?
I thought it was related to spanish a spanish question Im sorry :(
Answer:
It means that you are active in the day and not active in the night.
Explanation:
Like owls for example.
What caused the disappearance of land bridges? O A. Recession of glaciers and ice caps O B. Mountain building O C. Formation of the polar ice caps O D. A meteorite impact
Answer:
A. Recession of glaciers and ice caps
Explanation:
Land bridges began to disappear after the Ice Age ended.
Basically, a rise in sea level.
Hope this helps :D
Answer:
Recession of glaciers and ice cap
Explanation:
because i just took the test
100% sure
Is CaO binary or polyatomic?
Answer:
It is going to be binary
Explanation:
How do you name ethers in chemistry?
Answer:
Common names of ethers simply give the names of the two alkyl groups bonded to oxygen and add the word ether. The current practice is to list the alkyl groups in alphabetical order (t-butyl methyl ether), but older names often list the alkyl groups in increasing order of size (methyl t-butyl ether).
Explanation:
Hope it is helpful.......
pls help fast answer
Answer:
freezing
Explanation:
when objects are in liquid for, molecules are not moving as rapidly as when an object is in solid form
Answer:
evaporation :)
Explanation:
Relate the kinetic theory of matter to the states of matter.
Particles of matter are continuously moving, so they possess kinetic energy. As temperature rise the kinetic energy of atoms increase and particles move faster. So, they overcome the bonding force that holds them together. So, they change their state.
Give the product expected when the following alcohol reacts with pyridinium chlorochromate (PCC). (Assume that PCC is present in excess.) The starting material is a 4 carbon ring where carbon 1 is bonded to O H and C H 3. Carbon 3 is bonded to C H 2 C H 2 O H. This reacts with P C C in C H 2 C L 2 to give the product. Draw the product.
Answer:
Kindly check the explanation section.
Explanation:
Based on the description of the reacting -OH group containing Compound, the drawing of the chemical compound is given in the attached picture.
So, without mincing words let's dive straight into the solution to the question.
The reaction between the OH containing compound and PCC is an oxidation reaction.
Looking at the carbon number 1 which the first OH group and CH3 are attached to. Oxidation can not occur here as tertiary alcohol can not be oxidize.
Hence, the second OH will be oxidized into a carbonyl group, C = O. Kindly note that when alcohol oxidizes it turns into an aldehyde.
The equation for the reaction is also given the the attached picture.
explain how liquid can enter the gas phase without reaching its boiling point
How to frick a chicken...
Answer:uhhhhh should I be concerned
Explanation:
Answer:
hmmm o_O Maybe you... shouldnt
a hypothesis is tested by ___.
a. proposing a theory
b. conducting an experiment
c. making further observations
d. talking with other scientists
Answer:
A.
Explanation:
because a theory is like a prediction and a prediction is like a hypothesis.
In an experiment, a 88.11 mL sample of unknown silver nitrate solution was treated with 9.753 g of sodium chloride, resulting in 4.576 g of precipitate. Calculate the molarity of the silver nitrate solution
Answer:
[tex]M=0.362M[/tex]
Explanation:
Hello!
In this case, according to the following chemical reaction:
[tex]AgNO_3(aq)+NaCl(aq)\rightarrow AgCl(s)+NaNO_3(aq)[/tex]
It is possible to compute the moles of silver nitrate via stoichiometry that produced 4.576 g of silver chloride as shown below:
[tex]n_{AgNO_3}=4.576gAgCl*\frac{1molAgCl}{143.32gAgCl}*\frac{1molAgNO_3}{1molAgCl}\\\\n_{AgNO_3}=0.03193molAgNO_3[/tex]
Thus, since the molarity is obtained by dividing moles by volume, we obtain:
[tex]M=\frac{0.03193mol}{0.08811L}\\\\M=0.362M[/tex]
Best regards!
A sample of metal has a mass of 16.12 g, and a volume of 4.87 mL. What is the density of this metal?
Answer:
3.31 g/cm³
Explanation:
1000cm³ = 1L
4.87mL = 4.87 × 10^-3 × 1000 = 4.87 cm³
density = mass/volume = 16.12/4.87 = 3.31 g/cm³
hello, need ur help with this plz.
what are the factors affecting the yield and purity of an organic liquids in the laboratory and their relevance to its industrial manufacturing?
Explanation:
What factors affect purity?
A1: The key parameters that can be controlled in an emew cell are current density, flow rate, electrolyte temperature, and plating time. The current density controls the production rate, while the flow rate, temperature, and plating time can all have an impact on the product
What factors affect yield?
The yield and rate of a chemical reaction depend on conditions such as temperature and pressure. In industry, chemical engineers design processes that maximise the yield and the rate at which the product is produced. They also aim to reduce waste and energy costs at all stages of the process.
HOPE THIS HELPS YOU THANK YOU.
I would like to get some examples of Newtons 1st,2nd, and 3rd Law
Answer:
Explanation:
Newtons 1st law:
If you slide a hockey puck on ice, eventually it will stop, because of friction on the ice. It might also stop if a hockey player places their stick in front of it.
Newton's 2nd law:
If the mass of an object is 20 kg and it's acceleration is 5 m/s, the force acting upon it is (m*a or 20*5) 100 N.
Another example that proves that force is dependent upon mass is that if you were to move a car and a truck (that were both previously stationary) at the same speed, the car would take less force/effort to move than the truck.
Newton's 3rd law:
If a book on a table, the table is exerting a force on it that is equal and opposite to the force of gravity.
If two soccer balls of the same mass collide, one moving and one stationary, then they would both apply an equal and opposite force onto each other, causing the moving ball to stop and the previously stationary ball to move at the speed of the previously moving ball.
Which of the following compounds are held together by ionic bonds? Select all that apply.
O A. CaCl2
OB. CH4
OC. Naci
D. sodium bromide
E. carbon dioxide
F. FeBr3
Answer:
Explanation:
All of above except carbon dioxide
The compound that is held together by ionic bonds are CaCl₂, NaCl, sodium bromide, and FeBr₃. The correct options are A, C, D, and F.
What are ionic bonds?Ionic bonds are electrovalent bonds. These bonds are formed when two or more atoms lose electrons or gain electrons to form an ion. Ions are opposite charges that attract each other. Ionic bonds are formed in both metals and non-metals.
CaCl₂, calcium chloride, is formed between metals and non-metals. Some more examples are NaOH – Sodium Hydroxide, NaHCO₃—Sodium Hydrogen Carbonate, etc.
An example is NaCl, is sodium has 11 atomic numbers. Chloride has 6 electrons in its outermost shell. They will share electrons with each other to make the noble gas configuration.
Thus, the correct options are A. CaCl₂, C. NaCl, D, sodium bromide, and F. FeBr₃.
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Please help, and if you could also give me a step by step that would be awesome!!
Answer:
4.4 g
Explanation:
Step 1: Write the balanced equation
Cu + 4 HNO₃ ⇒ Cu(NO₃)₂ + 2 NO₂ + 2 H₂O
Step 2: Calculate the moles corresponding to 3.2 L of NO₂ at STP
At standard temperature and pressure, 1 mole of NO₂ occupies 22.4 L.
3.2 L × 1 mol/22.4 L = 0.14 mol
Step 3: Calculate the moles of Cu needed to produce 0.14 moles of NO₂
The molar ratio of Cu to NO₂ is 1:2. The moles of Cu needed are 1/2 × 0.14 mol = 0.070 mol.
Step 4: Calculate the mass corresponding to 0.070 moles of Cu
The molar mass of Cu is 63.55 g/mol.
0.070 mol × 63.55 g/mol = 4.4 g