Answer:
The formula for lime water is Ca(OH)2 and the chemical name for lime water is calcium hydroxide.Explanation:
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[tex]\\ \purple{MaggieEve}[/tex]
The joining of two smaller nuclei to form one larger nucleus is called...
Select one:
a. alpha decay.
b. beta decay.
c. nuclear fusion.
d. nuclear fission
Sodium metal (Na) reacts with chlorine gas ( Cl2 ) to produce solid sodium chloride (NaCl).
A) Write an unbalanced chemical equation for this reaction.
B) explain why the equation is unbalanced
Please help me answer A and B
The unbalanced equations are the equations with different atomic numbers on the sides of the reaction. The unbalanced reaction is Na + Cl₂ → NaCl
What are balanced equations?Balanced equations are the chemical reaction representation that has an equal number of the atomic number of the same species on the left and the right side of the reaction.
An unbalanced equation between sodium metal and chloride can be shown as:
Na + Cl₂ → NaCl
The equation is unbalanced as the number of chloride ions is more on the reactant side than the product side.
The balanced reaction will be:
2 Na + Cl₂ 2NaCl
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how many moles of HCI in 72 gm?
What is the formula for the compound iodine trichoride?
Answer:
The formula is CI 3 I. Hope this helps!
Answer:
ICl3.
Explanation: trust me
3 Apply Many scientific words, such as table, also have everyday meanings. Use context clues to write your own definition for each meaning of the word table.
Example sentence
The books are on the table.
table:
__________
Example sentence
A data table is a useful way to organize information.
table:
__________
Answer:
Explanation:
3 Apply Many scientific words, such as table, also have everyday meanings. Use context clues to write your own definition for each meaning of the word table.
Example sentence
The books are on the table
What is a chemical equation? What does it tell you?
Answer:
A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and formulas.
What are some differences between pure substances and mixtures?
Answer:
. a pure substance consists only of one element or one compound.
. a mixture consists of two or more different substances, not chemically joined together
Give the name for the alkyl.
Let's see
Calculate carbons
Total 3 ,prop word root to be usedCheck bondings
All single bondsThe compound is
-CH2-CH2-CH3The name is
PropylBalance the following chemical equations:
short paragraph about volcano and its features.
Consider the following statistic. As of January 2009, the USA has produced 60,000 metric tons of nuclear waste in 60 years of operating 104 nuclear power plants. On average, how much waste is produced by each plant on a monthly basis? 0. 8 tons per month 83. 3 tons per month 104 tons per month 866. 3 tons per month.
Answer: A
Explanation:
Which salt is produced when sulfuric acid and calcium hydroxide react completely.
Answer:
calcium sulphate and water
How much carbon dioxide do the people of earth add to the atmosphere in one year?.
Answer: About 43 billion tons
Explanation:
This is gonna be quite hard to explain.
The table describes a gas in four different containers Which container has gas stored at the highest temperature?
The container that has lowest temperature will store more amount of gas as compared to high temperature container.
Which container has gas stored at the highest temperature?At lowest temperature, the container stored the large amount of gas because at lower temperature the gases contract so more space is available for the storage of more gases.
So we can conclude that the container that has lowest temperature will store more amount of gas as compared to high temperature container.
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Select the correct answer. what is the empirical formula of a compound with 35.94% aluminum and 64.06% sulfur? a. als b. al4s6 c. als2 d. al2s3 e. als3
The empirical formula of the compound would be [tex]Al_2S_3[/tex]
Empirical formulaThe compound is composed of aluminum and sulfur:
Al = 35.94 S = 64.06
Find the mole of each component
Al = 35.94/26.98 S = 64.06/32
= 1.33 = 2.00
Divide by the smallest:
Al = 1.33/1.33 S = 2/1.33
= 1 = 1.5
Thus, the empirical formula of the compound is [tex]Al_2S_3[/tex]
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The empirical formula of the compound from the calculations done is AlS2.
What is empirical formula?The term empirical formula refers to the simplest formula of a compound. It shows the ratio of atoms of elements in the molecule.
Now, we divide each percentage with the relative atomic mass of the element;
Al - 35.94/27 S - 64.06/32
1.33 2.00
Divide through by the lowest ratio;
1.33/1.33 2.00/1.33
A - 1 S - 2
The empirical formula of the compound is AlS2.
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What kind of intermolecular forces act between a chloromethane molecule and a chloroacetylene molecule
Dipole to Dipole force
Explanation:
A dipole to dipole forces exists between these molecules
For each reaction below, use the drop-down menus to select which compound will form a precipitate. Note: It is possible that no precipitates form.
Na2S + Cd(NO3)2 → CdS + 2NaNO3
FeCl3 + 3KOH → 3KCl + Fe(OH)3
Na2CO3 + Ba(NO3)2 → BaCO3 + 2NaNO3
Answer:
1. Cadmium sulfide
2. Iron (III) hrydroxide
3. Barium carbonate
1. Cadmium sulfide
2. Iron (III) hydroxide
3. Barium carbonate
These three will form a precipitate in the respective reactions.
What is a precipitate?
In chemistry, a solid is formed by a change in a solution, often due to a chemical reaction or change in temperature that decreases the solubility of a solid.
[tex]Na_2S + Cd(NO_3)_2[/tex] → [tex]CdS + 2NaNO_3[/tex]
cadmium sulfide will form a precipitate.
[tex]FeCl_3 + 3KOH[/tex]→ [tex]3KCl + Fe(OH)_3[/tex]
iron (III) hydroxide will form a precipitate.
[tex]Na_2CO_3 + Ba(NO_3)_2[/tex] → [tex]BaCO_3 + 2NaNO_3[/tex]
barium carbonate will form a precipitate.
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Select the correct answer.
A compound has a molecular weight of 112.124 atomic mass units and the empirical formula C3H4O. What is the molecular formula of the compound? Use the periodic table to help you.
A.
C6H8O
B.
C9H12O3
C.
C8H4O2
D.
C4H8O2
E.
C6H8O2
.
Answer:
E
Explanation:
The empirical formula has a mass of
3*C = 3*12 = 36
4*H = 4*1 = 4
1*O = 1 * 16 = 16 Add
Total = 56
The actual mass of the molecule in nature is 112
Multiplier = nature's mass / empirical formula mass
Values
Nature's mass = 112
Empirical mass = 56
Solution
Multiplier = Natures mass/Empirical Mass
Multiplier = 112 / 56
Multiplier = 2
Formula
Nature's formula = (Emperical Mass)_multiplier
Nature's formula = (C3H4O)_2 Multiply
Nature's formula = C6H8O2
Check
C6 = 6*C = 6*12 = 72
H8 = 8*H = 8*1 = 8
O2 = 2*O = 2*16 = 32 Add
Total 112 which checks with what is given.
Aluminum Oxide is formed when aluminum combines with oxygen in the air. How many grams of Al2O3 are formed when 23.6g of Al reacts completely with oxygen?
The amount of [tex]Al_2O_3[/tex] that would be formed will be 44.59 grams
Stoichiometric calculation
From the equation of the reaction:
[tex]4Al + 3O_2 --- > 2Al_2O_3[/tex]
The mole ratio of Al to [tex]Al_2O_3[/tex] is 2:1
Mole of 23.6 g Al = 23.6/26.98 = 0.87 moles
Equivalent mole of [tex]Al_2O_3[/tex] = 0.87/2 = 0.44 moles
Mass of 0.44 mole [tex]Al_2O_3[/tex] = 0.44 x 101.96 = 44.59 grams
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A gas cylinder contains exactly 1 mole of oxygen gas (o2). how many molecules of oxygen are in the cylinder? 4.01 × 1022 molecules 6.02 × 1023 molecules 9.03 × 1024 molecules 2.89 × 1026 molecules
The number of molecules of oxygen in the cylinder would be 6.022 x [tex]10^{23}[/tex]
Number of molecules of gasesAccording to Avogadro, 1 mole of any substance contains 6.022 x [tex]10^{23}[/tex] molecules.
In this case, there is 1 mole of oxygen gas in the cylinder. Thus, following the established rule by Avogadro, there would be 6.022 x [tex]10^{23}[/tex] molecules of oxygen in the cylinder.
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Answer:
6.02 x10^23
Explanation:
i did the test
The ph of a solution is 7. When acid is added to the solution, the hydronium ion concentration becomes 100 times greater. What is the ph of the new solution?.
After acid was added to the solution and the hydronium ion concentration becomes 100 times greater, the pH of the new solution is 5.
What is pH of solution?The pH of a solution is defined as the logarithm of the reciprocal of the hydrogen ion concentration [H+] of the given solution.
It is expressed as;
pH = -log[ H⁺]
Given that;
pH of the solution = 7Hydronium ion concentration H⁺ = ?pH = -log[ H⁺]
H⁺ = 10^( -pH )
H⁺ = 10^( -7 )
H⁺ = 10⁻⁷
When acid is added to the solution, the hydronium ion concentration becomes 100 times greater.
H⁺ = 10⁻⁷ × 100
H⁺ = 10⁻⁵
pH of the new solution will be;
pH = -log[ H⁺ ]
pH = -log[ 10⁻⁵ ]
pH = 5
Therefore, after acid was added to the solution and the hydronium ion concentration becomes 100 times greater, the pH of the new solution is 5.
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find the iupac name for this question
Answer:
3 - Methylpent-2-yn-1-ol
For the reaction: P4 + 6C12 – 4 PC13
What mass of PCl3 forms in the reaction of 75.0 g P4 with 275 g Cl2?
Answer:
332.3g
Explanation:
hope this helps loves x
Amino acids are monomers for which biochemicals? nucleic acids polysaccharides lipids polypeptides
Answer:
polypeptides in other words proteins.
Amino acids are monomers for polypeptides. Therefore, the correct option is option D.
The chemical substances known as amino acids are what make up proteins. They are crucial for the development, upkeep, and repair of our body's cells and tissues. The distinctive structure of amino acids, which consists of a core carbon atom joined to an amino group, a carboxyl group, a hydrogen atom, and a side chain known as the R-group that varies between different amino acids, is what makes them stand out from other compounds. There are 20 different amino acids that are frequently present in proteins, each of which has a unique configuration of atoms in its R-group.
Therefore, the correct option is option D.
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What weight (in grams) of h2so4 would be needed to make 750.0 ml of 2.00 m solution?
Answer:
I think the answer should be 147
Explanation:
Which of these statements is false? The least reactive elements are in the far right column. Elements at the bottom of a column have more protons than elements at the top of a column. Elements on the left side of a row always have higher atomic mass than elements on the right side of that row. Elements along the steplike line have some properties of metals and some properties of nonmetals.
Answer:
Elements on the left side of a row always have higher atomic mass than elements on the right side of that row.
Explanation:
the answer I have above should be correct because it’s false so it’s the right answer.
Which of the following reactions would you find in a radioisotope thermal generator?
PLS, I NEED HELP!!!!
Next, you will gradually apply heat to the sugar and observe the effects. Your goal is to identify the point at which sugar begins to melt. To get started, follow these steps. Then, answer the question that follows.
Pour 1 tablespoon of sugar into a cooking pan. Spread it out across the surface of the pan. Place the pan on a stove.
Because all stoves are different, you’ll need to identify your low, medium, and high heat settings before proceeding to step 3.
Use the method below to gradually heat the pan until you see the sugar begin to melt. Once the sugar melts, note how much time has elapsed and the final heat setting. If at any point the pan begins to smoke, immediately turn off the heat source and remove the pan from the heat. Heat the pan for these times and temperatures, stopping when the sugar begins to melt:
5 minutes on low heat
5 minutes on medium-low heat
5 minutes on medium heat
5 minutes on medium-high heat
5 minutes on high heat
When the sugar melts, turn off the stove and remove the pan from the heat. Do not touch the hot pan except by its handle. Use hot pads or oven mitts if the pan’s handle isn’t insulated. Let the pan sit off the heat on a heat-resistant surface until it cools.
Approximately how many minutes did it take for the sugar to melt? What was the final heat setting?
Repeat the process given in part D using salt instead of sugar. Did the salt melt? If so, approximately how many minutes did it take for the salt to melt?
When a high amount of heat is supplied, the sugar melts faster than when a low amount of heat is supplied.
What is melting?The term melting has to do with the breakdown of the bonds that hold the molecules of a substance together. Melting occurs when heat is applied continously to a body.
Now, the time taken for the sugar to melt depends on the amount of heat supplied. In other words, when a high amount of heat is supplied, the sugar melts faster than when a low amount of heat is supplied.
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When a high amount of heat is supplied, the sugar melts faster than when a low amount of heat is supplied. low heat makes the sugar take awhile to melt. High heat was the final heat setting. I took about 8-10 minutes.
Which hydrocarbon is unsaturated?
A solar flare may cause charged particles to enter the earth's atmosphere.
true false
Answer:
True
Explanation:
This is because the Earths ionisphere was distrubed which makes radio communications.