B. Sodium hydroxide and Hydrochloric acid
Further explanationChemical equations can be expressed in terms of
word reaction formula reactionIn a chemical reaction, there are several components, including reactants, products, and compounds that react in the form of solids, gases, and liquids
Reactants are compounds that react and form products
The reactants are generally to the left of the chemical equation and the products are to the right of the reaction
The statement of the word reaction above can be expressed by the reaction formula
[tex]\tt NaOH+HCl\rightarrow NaCl+H_2O[/tex]
This reaction is called a neutralization reaction because it involves acids(HCl) and bases(NaOH) and produces salt(NaCl)and water(H₂O)
From the reaction above, the reactants on the left are NaOH and HCl compounds
Please give answers from h
Answer:
option b
Explanation:
please help GIVING brainliest
Answer:
heat wave
Explanation:
A high pressure system is a whirling mass of cool, dry air that generally brings fair weather and light winds. When viewed from above, winds spiral out of a high-pressure center in a clockwise rotation in the Northern Hemisphere.
Which group on the periodic table contains chemical elements that are usually brittle as solids, shiny, and able to conduct electricity under certain conditions? O A. Metals O B. Metalloids C. Representative metals D. Nonmetals
Answer:
Metals
Explanation:
Which of the following would be most useful in trying to obtain procedural information to replicate an experiment previously published?
Answer:
Peer-reviewed Journal Article
Explanation:
1.Dictionary
2.Encyclopidia
3.Internet Search Engine
4.Peer-reviewed Journal Article
The correct answer as to which would be most useful in trying to obtain procedural information to replicate an experiment previously published would be a peer-reviewed journal article.
A peer-reviewed journal article is a journal article written by an expert or experts on a particular topic and has undergone thorough reviews by experts in the same field and certified to be of good-enough standards to be published.
Such an article would contain all the necessary information relating to the experiment leading to the article. Hence, in order to obtain procedural information to replicate an experiment that has been previously published, a peer-reviewed journal published on the same topic would do be the right place to seek.
Which of the following aqueous solutions
would conduct electricity?
Electroyte and Vonvlectrolyte Solution
Answer:
H2CO
Explanation:
How many valence electrons does selenium have?
Answer:
six electrons
Explanation:
The six electrons in the outermost shell allow selenium to have a variety of valence numbers. Selenium compounds have been found that have valences of -2, 4, and 6. Speaking of the number six, selenium is found to have six naturally occurring isotopes.
FeS+2HCl --> FeCl2+H2S
Is the above equation balanced?
Answer:
yeah they're both balanced out
Which statement is correct concerning hereditary information?
A. A chromosome is composed of many genes.
B. A gene is composed of many chromosomes.
C. Each chromosome carries the same information.
D. Each gene carries the same information.
Answer:
the answer to this question is option A mark me as brainliest
mark me as brainliest
PLS HELP WILL GIVE BRAINLYEST What happens when the magnet is removed from the coil in a circuit?
a.
The current stops
c.
The voltage decreases
b.
The current changes direction
d.
Power output increases
Calcium Carbonate reacts with dilute hydrochloric acid. The equation for the reaction is shown. CaCo3 + 2Hcl = Cacl2 + H2O + Co2 1 g of calcium Carbonate is added to 50cm3 of 0.05mol/dm3 hydrochloric acid. Which volume of carbon dioxide is made in this reaction?
Answer:
Approximately [tex]0.224\;\rm L[/tex], assuming that this reaction took place under standard temperature and pressure, and that [tex]\rm CO_2[/tex] behaves like an ideal gas. Also assume that the reaction went to completion.
Explanation:
The first step is to find out: which species is the limiting reactant?
Assume that [tex]\rm CaCO_3[/tex] is the limiting reactant. How many moles of [tex]\rm CO_2[/tex] would be produced?
Look up the relative atomic mass of [tex]\rm Ca[/tex], [tex]\rm C[/tex], and [tex]\rm O[/tex] on a modern periodic table:
[tex]\rm Ca[/tex]: [tex]40.078[/tex].[tex]\rm C[/tex]: [tex]12.011[/tex].[tex]\rm O[/tex]: [tex]15.999[/tex].Calculate the formula mass of [tex]\rm CaCO_3[/tex]:
[tex]\begin{aligned} & M(\rm CaCO_3) \\ &= 40.078 + 12.011 + 3 \times 15.999 \\&= 100.086\; \rm g \cdot mol^{-1}\end{aligned}[/tex].
Calculate the number of moles of formula units in [tex]1\; \rm g[/tex] of [tex]\rm CaCO_3[/tex] using its formula mass:
[tex]\begin{aligned}& n(\mathrm{CaCO_3})\\&= \frac{m(\mathrm{CaCO_3})}{M(\mathrm{CaCO_3})} \\ &= \frac{1\; \rm g}{100.086\; \rm g \cdot mol^{-1}} \approx 1.00\times 10^{-2}\; \rm mol\end{aligned}[/tex].
In the balanced chemical equation, the ratio between the coefficient of [tex]\rm CaCO_3[/tex] and that of [tex]\rm CO_2[/tex] is [tex]\displaystyle \frac{n(\mathrm{CO_2})}{n(\mathrm{CaCO_3})} = 1[/tex].
In other words, for each mole of [tex]\rm CaCO_3[/tex] formula units consumed, one mole of [tex]\rm CO_2[/tex] would be produced.
If [tex]\rm CaCO_3[/tex] is indeed the limiting reactant, all that approximately [tex]1.00\times 10^{-2}\; \rm mol[/tex] of [tex]\rm CaCO_3\![/tex] formula would be consumed. That would produce approximately [tex]1.00\times 10^{-2}\; \rm mol\![/tex] of [tex]\rm CO_2[/tex].
On the other hand, assume that [tex]\rm HCl[/tex] is the limiting reactant.
Convert the volume of [tex]\rm HCl[/tex] to [tex]\rm dm^{3}[/tex] (so as to match the unit of concentration.)
[tex]\begin{aligned}&V(\mathrm{HCl})\\ &= 50\; \rm cm^{3} \\ &= 50\; \rm cm^{3} \times \frac{1\; \rm dm^{3}}{10^{3}\; \rm cm^{3}} \\ &= 5.00\times 10^{-2}\; \rm dm^{3} \end{aligned}[/tex].
Calculate the number of moles of [tex]\rm HCl[/tex] molecules in that [tex]5.00\times 10^{-2}\; \rm dm^{3}[/tex] of this [tex]\rm 0.05\; \rm mol \cdot dm^{-3}[/tex]
[tex]\begin{aligned}& n(\mathrm{HCl}) \\ &= c(\mathrm{HCl}) \cdot V(\mathrm{HCl}) \\ &= 0.05\; \rm mol \cdot dm^{-3}\\ &\quad\quad \times 5.00\times 10^{-2}\;\rm dm^{3} \\ &= 2.50 \times 10^{-3}\; \rm mol\end{aligned}[/tex].
Notice that in the balanced chemical reaction, the ratio between the coefficient of [tex]\rm HCl[/tex] and that of [tex]\rm CO_2[/tex] is [tex]\displaystyle \frac{n(\mathrm{CO_2})}{n(\mathrm{HCl})} = \frac{1}{2}[/tex].
In other words, each mole of [tex]\rm HCl[/tex] molecules consumed would produce only [tex]0.5\;\rm mol[/tex] of [tex]\rm CO_2[/tex] molecules.
Therefore, if [tex]\rm HCl[/tex] is the limiting reactant, that [tex]2.50 \times 10^{-3}\; \rm mol[/tex] of [tex]\rm HCl\![/tex] molecules would produce only one-half as many (that is, [tex]1.25\times 10^{-3}\; \rm mol[/tex]) of [tex]\rm CO_2[/tex] molecules.
If [tex]\rm CaCO_3[/tex] is the limiting reactant, [tex]\rm 1.00\times 10^{-3}\; \rm mol[/tex] of [tex]\rm CO_2[/tex] molecules would be produced. However, if [tex]\rm HCl[/tex] is the limiting reactant, [tex]1.25\times 10^{-3}\; \rm mol[/tex] of [tex]\rm CO_2\![/tex] molecules would be produced.
In reality, no more than [tex]\rm 1.00\times 10^{-3}\; \rm mol[/tex] of [tex]\rm CO_2[/tex] molecules would be produced. The reason is that all [tex]\rm CaCO_3[/tex] would have been consumed before [tex]\rm HCl[/tex] was.
After finding the limiting reactant, approximate the volume of the [tex]\rm CO_2\![/tex] produced.
Assume that this reaction took place under standard temperature and pressure (STP.) Under STP, the volume of one mole of ideal gas molecules would be approximately [tex]22.4\; \rm L[/tex].
If [tex]\rm CO_2[/tex] behaves like an ideal gas, the volume of that [tex]\rm 1.00\times 10^{-3}\; \rm mol[/tex] of [tex]\rm CO_2\![/tex] molecules would be approximately [tex]\rm 1.00\times 10^{-3}\; \rm mol \times 22.4\; \rm L = 0.224\; \rm L[/tex].
Hydrogenation (H2/Pd-C) of 3,4-dimethyl-3-hexene (3,4-dimethyl hex-3-ene) would be expected to form A) an enantiomeric pair for both the (E) and (Z) isomers. B) an enantiomeric pair for the (E) isomer and one meso compound for the (Z) isomer. C) one meso compound for the (E) isomer and an enantiomeric pair for the (Z) isomer. D) will not form any stereoisomers since the product is a saturated hydrocarbon. E) None of the above provide a correct response.
Answer:
D) will not form any stereoisomers since the product is a saturated hydrocarbon.
Explanation:
Stereoisomerism, or spatial isomerism,refers to a type of isomerism in which two or more molecules have the same molecular formula and atom to atom connectivity but different three-dimensional orientations of those atoms in space.
Stereoisomerism occurs in alkenes because free rotation about the C=C bond is hindered. Thus, the molecule is "locked" in a particular orientation. In a saturated alkane, there is unrestricted free rotation about the C-C bond hence straight chain alkanes do not have steroisomers.
The product formed is 3,4-dimethyl hexane which is a straight chain saturated alkane. This compound does not exhibit stereoisomerism.
Calculate the pH for each H+ concentration.
[H+] = 1 x 10-8 M
pH =
---
[H+] = 0.001 M
pH
[H+] = 1 x 10-12 M
pH =
Answer:
The answer of 1×10 -8 is 2
Plz solve
A 20-g sample of sugar is dissolved in 59 g of water. The concentration of the solution is
Hint Water is a solvent
Answer:
0.98 M
Explanation:
Given data:
Mass of sugar = 20 g
Mass of water = 59 g
Concentration of solution = ?
Solution:
1 g = 0.01 L
59 g× 0.01 L/1 g
0.059 L
Concentration formula:
C = m/v
m = moles of solute
v = volume of solution
Number of moles of sugar:
Number of moles = mass/molar mass
Number of moles = 20 g/ 342.3 g/mol
Number of moles = 0.058 mol
Now we will calculate the concentration:
C = 0.058 mol/0.059 L
C = 0.98 mol/L
C = 0.98 M
Ethane (CH) is one of many compounds that burns in oxygen to form carbon dioxide and water, as represented by the equation.
2C2H6 + 702 4CO2 + 6H2O
Which substance is a product in this reaction?
Answer:
carbon dioxide and water.
Explanation:
Chemical equation:
2C₂H₆ + 7O₂ → 4CO₂ + 6H₂O
Reactants are present on the left side of chemical equation while products are present on the right side of chemical equation. In given chemical equation ethane and oxygen are reactant while carbon dioxide and water are product.
The given reaction is combustion reaction. Ethane is burnt in the presence of oxygen and produces carbon dioxide and water.
The reaction also follow the law of conservation of mass.
This law was given by French chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
Find the mass of an object with a density of 2.01g/mL and a volume of 3.77mL
Answer:
7.58 gExplanation:
The mass of a substance when given the density and volume can be found by using the formula
mass = Density × volume
From the question we have
mass = 2.01 × 3.77 = 7.5777
We have the final answer as
7.58 gHope this helps you
Valence electrons are determined by the...
a. highest occupied energy level and Group Number. I
b. highest occupied energy level and Group Number - 8.
Explanation:
A) Highest occupied energy level and Group Number.
g The energy associated with the lowest n = 1 state in a hydrogen atom is – 13.6 eV. The wavelength of the emission line corresponding to the transition from n = 4 to n = 3 is
Answer:
10.9 * 10^-7 m
Explanation:
We know that the Rydberg constant (R) is – 13.6 eV = -2.18 * 10^-18 J
ΔE= -R(1/nf - 1/ni)
Where;
nf = final state
ni= initial state
ΔE= -2.18 * 10^-18(1/3 - 1/4)
ΔE= -2.18 * 10^-18(1/12)
ΔE= -1.81 * 10^-19 J
From;
ΔE=hc/λ
h = plank's constant = 6.6 * 10^-34 Js
c = 3 * 10^8 ms-1
λ = ?
λ = hc/ΔE
λ = 6.6 * 10^-34 * 3 * 10^8/ 1.81 * 10^-19
λ = 10.9 * 10^-7 m
1. The diagram shows a box that is sliding down a ramp
F1
F4
F2
F3
Which arrow correctly indicates the direction of friction acting on the box?
A F1
B. F2
C3
D. 14
10 POINTS!!!
Answer:
F4
Explanation:
Friction is a force that opposes motion
Calculate the pH for the following buffer solutions with steps.
1. 7.4862 grams of acetic acid and 10.4695 grams of sodium acetate are dissolved in enough deionized water to make 250.0 mL of solution.
2. 11.8115 grams of trimethylamine and 18.7088 grams of trimethylammonium chloride are dissolved in enough deionized water to make 500.0 mL of solution.
Thank You:)
Answer:
Answer is shown on the paper :D
Explanation:
Remember to follow sig-figs.
Acetaminophen is the active ingredient in Tylenol.
a. Write the molecular formula of the compound.
b. What is the hybridization state of each C, N, and O atom?
Explanation:
a. Write the molecular formula of the compound.
Acetaminophen contains 8 carbon atoms, 9 Hydrogen atoms, 1 Nitrogen atom and 2 Oxygen atoms.
The molecular formular is given as; C8H9NO2
b. What is the hybridization state of each C, N, and O atom?
From the image attached;
All the carbon atoms in the benzene ring has hybridization of sp2.
The carbon that is doubly bonded (carbonyl) to the oxygen has hybridization of sp2
The last carbon to the right has hybridization of sp3
The hybridization of nitrogen in the compound is sp3 hbridized.
Oxygen atom in alcohol is sp3 hybridised
Oxgen in the carbonyl group is sp2 hybridized.
A gas is enclosed in a cylinder fitted with a piston. The volume of the gas is 5.00 L at 0.500
atm pressure. The piston is moved to increase the volume to 3.00 L. Which of the
following is a reasonable value for the pressure of the gas at the greater volume?
Answer:
0.8333 L. P1v1=p2v2
Explanation:
I dont now if this is wht you were looking for so srry
The pressure of the gas at which the final volume of the gas has been 3 L has been 0.833 atm.
The gas has been assumed to be at constant temperature. The change in the pressure and volume of gas at constant temperature can be given by:
Initial pressure × Initial volume = Final pressure × Final volume
The initial pressure of gas has been 0.5 atm, and the initial volume has been 5L. The increased volume or final volume of the system has been 3 L.
The final pressure of the gas has been given by:
0.5 atm × 5 L = 3 L × Final pressure
Final pressure = 0.833 atm.
The pressure of the gas at which the final volume of the gas has been 3 L has been 0.833 atm.
For more information about the pressure of the gas, refer to the link:
https://brainly.com/question/6534127
Calculate the molarity of a solution of potassium hydroxide if 19.55 mL of KOH is required for the titration of a 20.20 mL sample of a 0.3467 M sulfuric acid solution.
Answer:
The correct answer is 0.3582 M.
Explanation:
Based on the given information, the volume of KOH given is 19.55 ml, the volume of sulfuric acid given is 20.20 ml, and the molarity of sulfuric acid is 0.3467 M. There is a need to find the molarity of KOH.
The formula to use in the given case is,
M1V1 = M2V2
Here M1 is the molarity of KOH, V1 is the volume of KOH, M2 is the molarity of sulfuric acid, and V2 is the volume of H2SO4.
Here V1 is 19.55 ml, M2 is 0.3467 M, and V2 is 2020 ml.
Now putting the values in the equation we get,
M1 * 19.55 = 0.3467 * 20.20
M1 * 19.55 = 7.00334
M1 = 7.00334/19.55
M1 = 0.3582 M
Hence, the molarity of the given KOH is 0.3582.
The molarity of a solution of potassium hydroxide is 0.3582M
To get the molarity of the solution of potassium hydroxide KOH, we will apply the formula;
[tex]C_1V_1=C_2V_2[/tex]
C₁ and C₂ are the concentration of the solutionV₁ and V₂ are volumes of the solutionGiven the following parameters;
C₂ = 0.3467M
V₂ = 20.20mL
V₁ = 19.55mL
C₁ = ?
Substitute the given parameters into the formula:
C₁ × 19.55 = 0.3467× 20.20
C₁ × 19.55 = 7.00334
C₁ = 7.00334/19.55
C₁ = 0.3582M
Hence the molarity of a solution of potassium hydroxide is 0.3582M
Learn more on molarity here: https://brainly.com/question/19555927
1. A force of 30N is applied to a screwdriver to pry the lid off of a can of paint. The
screwdriver applies 90N of force to the lid. What is the MA of the screwdriver?
Answer:
120N
Explanation:
Answer:
3
Explanation:
Load / Effort
The effort is 30N and the Load is 90N.
So the MA is equal to 90/30 = 3
Would It be C Please help
Answer:
yes its c
Explanation:
why did my dad hasn't come back with the milk for 10 years
Answer:
Milk's heavy
Explanation:
For the chemical reaction:
N2 (g)
+
H2(g)=
NH3 (g)
Calculate the volume of NH; that will form from 200 dm cubed of N2 at STP. (N = 14; H - 1)
[At STP. 1 mole of any gas occupies volume of 22 A dm cubed
Answer:
Volume of ammonia produced = 398.7 dm³
Explanation:
Given data:
Volume of N₂ = 200 dm³
Pressure and temperature = standard
Volume of ammonia produced = ?
Solution:
Chemical equation:
N₂ + 3H₂ → 2NH₃
Number of moles of N₂:
PV = nRT
1 atm× 200 L = n× 0.0821 atm.L/mol.K × 273 K
n = 200 atm.L /22.41 atm.L/mol
n = 8.9 mol
Now we will compare the moles of ammonia and nitrogen.
N₂ : NH₃
1 : 2
8.9 : 2/1×8.9 = 17.8 mol
Volume of ammonia:
1 mole of any gas occupy 22.4 dm³ volume
17.8 mol ×22.4 dm³/1 mol = 398.7 dm³
How many energy Do Squrrel's have
Answer:
pfffft definitely 10. smh silly goose
"Ground squirrels eat nuts, leaves, roots, seeds, and other plants. They also catch and eat small animals, such as insects and caterpillars.Though they are terrific climbers, these squirrels do come to the ground in search of fare such as nuts, acorns, berries, and flowers. They also eat bark, eggs, or baby birds."
Calculate the formula for the following hydrate
composed of 76.9% CaSO3 and 23.1% H2O.
CaSO3 H20
O CaSO3 • 2H20
CaSO3 • 3H20
Answer:
CaSO₃·2H₂O
Explanation:
Empirically => CaSO₃·nH₂O
%H₂O = n(H₂O)/f.wt. x 100%
23.1% = n(H₂O)100/Ca + S +3O + nH₂O
23.1 = n(18)·100/[40 + 32 + 3(16) + n(18)]
1800n = 23.1[40 + 32 + 3(16) + n(18)]
1800n = 924 + 739.2 + 1108.8 + 415.8n
1800n - 415.8n = 924 + 739.2 + 1108.8
1385n = 2772
n = 2772/1385 = 2
∴ numerical formula => CaSO₃·2H₂O
How many moles of N2O5 are needed
to produce 7.90 g of NO2?
Answer:
0.085 moles of N₂O₅ are needed
Explanation:
Given data:
Mass of NO₂ produces = 7.90 g
Moles of N₂O₅ needed = ?
Solution:
2N₂O₅ → 4NO₂ + O₂
Number of moles of NO₂ produced :
Number of moles = mass/ molar mass
Number of moles = 7.90 g/ 46 g/mol
Number of moles = 0.17 mol
now we will compare the moles of NO₂ with N₂O₅.
NO₂ : N₂O₅
4 : 2
0.17 : 2/4×0.17 = 0.085 mol
Thus, 0.085 moles of N₂O₅ are needed.
how does philosophy look at man
Answer:
The philosophical view of man implies that we are moral as well as intelligence beings. It provides the framework to discover the nature of human excellence embodied by the perennial virtues towards which all men of good will tend.
