Answer:
Sodium carbonate + Nitric acid → sodium nitrate + water + carbon dioxide.
Explanation:
Answer:
Sodium carbonate + Nitric acid → sodium nitrate + water + carbon dioxide.
Q1 - How would you balance the following equation: N₂ + O₂ N₂O₅
A: N₂ + 5 O₂ N₂O₅
B: 2 N₂ + 5 O₂ 2 N₂O₅
C: N₂ + 5 O₂ N₂2O₅
D: N₂ + O₂ N₂O₅ (already balanced)
Q2 - In the reaction, HCl + NaOH NaCl + H₂O, what is/are the reactant(s)?
A: HCl only
B: HCl and NaOH
C: NaCl only
D: HCl and NaCl
nswer:
For Q1 its B!
Explanation:
cuz I'm smart dw.
2k+Cl2=2KCI how many grams of KCl is produced from 8.50 g of K and excess Cl2
Answer:
Mass = 16.4 g
Explanation:
Given data:
Mass of K = 8.50 g
Mass of KCl produced = ?
Solution:
Chemical equation:
2K + Cl₂ → 2KCl
Number of moles of K:
Number of moles = mass/ molar mass
Number of moles = 8.50 g/ 39 g/mol
Number of moles = 0.22 mol
Now we will compare the moles of potassium and potassium chloride.
K : KCl
2 : 2
0.22 : 0.22
Mass of KCl:
Mass = number of moles × molar mass
Mass = 0.22 mol × 74.55 g/mol
Mass = 16.4 g
a) Give the molar mass of Xenon
Answer:
131.293 u
Explanation:
What is the volume of 2 mol of chlorine gas at STP?
2.0 L
11.2 L
22.4 L
44.8 L
Answer:
44.8 L
Explanation:
Using the ideal gas law equation:
PV = nRT
Where;
P = pressure (atm)
V = volume (L)
n = number of moles (mol)
R = gas law constant (0.0821 Latm/molK)
T = temperature (K)
At Standard temperature and pressure (STP);
P = 1 atm
T = 273K
Hence, when n = 2moles, the volume of the gas is:
Using PV = nRT
1 × V = 2 × 0.0821 × 273
V = 44.83
V = 44.8 L
Answer:
44.8L
Explanation:
Which describes a molecule? (Select all that apply.)
It can be two or more different elements combined.
It can be two or more of the same elements combined together.
It can be one element by itself.
It can be the combination of different neutrons.
Answer:
All of them
Explanation: A molecule can be all of them
Does Si or Sn have the smallest atomic radius? Explain your answer using Coulombs Law.
Answer/Explanation:
Atomic radii vary in a predictable way across the periodic table. As can be seen in the figures below, the atomic radius increases from top to bottom in a group, and decreases from left to right across a period. Thus, helium is the smallest element, and francium is the largest.
In the following reaction:-Assign the oxidation number.-Identify the oxidizing and reducing agent.-Identify the change in oxidation number.P4 + 10 Cl2 —> 4 PCl5
As you already know, P is being oxidized and it is the reducing agent in this reaction, as Chlorine is being reduced and it is the oxidizing agent for the reaction, but for oxidation number, there is one crucial information that will give us the answer:
Oxidation number for halogens will 99% of the times be -1, since they have 7 electrons in the valence shell and they need 1 to stabilize.
Cl2 is stable as the 2 chlorines are sharing electrons, but Cl alone will have a -1 charge, and Cl with other elements making up a compound will also have a -1 charge
Therefore if we have 5 Chlorines with P, and each Chlorine has a -1 charge, therefore Phosphorus will have a +5 charge in order to balance and stabilize charges, and this is experimentally proven, as P has oxidation numbers = -3, +3 and +5.
Oxidation number change
P = P^5+
Cl = Cl^-
How many valence electrons does carbon have available for bonding to other atoms?
a. 2
b. 4
c. 6
d. 8
Answer:
4 valence electrons.
Explanation:
Carbon has 4 valence electrons because it is in the 14th group on the Periodic Table.
What is the correct formula for Triphosphorous hexachloride?
Answer:
P3
Explanation:
Im pretty sure hope this helps
16. Which is an example of a transverse wave? (1 point)
Answer:
Transverse wave,Explanation:
motion in which all points on a wave oscillate along paths at right angles to the direction of the wave's advance. Surface ripples on water, seismic S (secondary) waves, and electromagnetic (e.g., radio and light) waves are examples of transverse waves.Answer:
A WAVE CARRIED THROUGH A ROPE
Explanation:
I chose a wave on water and got it WRONG
27. The first five ionization energies of an element, X, are shown in the table. Ionization energy 1st 2nd 3rd 4th 5th Value / kJ mol-1 631 1235 2389 7089 8844 What is the mostly likely formula of the oxide that forms when X burns in oxygen A. X20 O B. XO I C. X203 D. XO2
The correct formula of the oxide that forms when X burns in oxygen is X2O3.
Ionization energy is defined as the energy required to remove an electron from an atom. There are as many ionization energies present in an atom as there are electrons in that atom.
However, we can know the ionization energy values that belong to electrons in the outermost shell because they lie close together. If we go further into the inner shells, there is a sudden quantum jump in ionization energy values.
The element X must have three valence electrons because 631 ,1235, 2389 all refer to ionization energies of electrons in the valence shell. As we get into a core shell, there is a sudden jump hence the fourth and fifth ionization energies are 7089 and 8844 respectively.
The correct formula of the oxide that forms when X burns in oxygen is X2O3.
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be sure to answer all parts. classify each nitrogen-containing functional group in the anesthetic lidocaine according to whether it is an amide, or a primary, secondary, or tertiary amine. h542140 functional group 1 is a(n) (select) . functional group 2 is a(n) (select) .
Lidocaine has two nitrogen-containing functional groups: functional Group 1 is a secondary amine and functional Group 2 is an amide.
Functional Group 1: In the middle of the molecule, there is a nitrogen atom that is bonded to two carbons and a hydrogen atom. This makes it a secondary amine, as the nitrogen atom is bonded to two carbon atoms and one hydrogen atom.
Functional Group 2: On the right side of the molecule, there is a nitrogen atom bonded to a carbon atom through a double bond, and another carbon atom through a single bond. This arrangement forms an amide functional group, as the nitrogen atom is directly bonded to a carbonyl group (C=O).
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Iron+calcium oxide=?
Answer:
Calcium iron oxide (CaFe2O4)
PubChem CID 6336546
Molecular Formula CaFe2H8O4
Synonyms Calcium iron oxide (CaFe2O4) 12013-33-1 Calcium ferrite EINECS 234-584-5
Molecular Weight 223.83 g/mol
Component Compounds CID 23925 (Fe) CID 5460341 (Calcium) CID 962 (Water)
Which process, in order, would be necessary for this sequence of the rock cycle:
rock → metamorphic rock → igneous rock
Heat and pressure → melting → cooling
Weathering and erosion → compaction → weathering and erosion
Melting → cooling → melting → erosion
Cooling → melting → cooling → weathering and erosion
Answer:
may be the answer is Heat and pressure - melting - cooling
PLS ANSWER FAST WILL GIVE BRAINLY!! ONLY IF YOU KNOW!!!
Fill in the blank
_____orbit around the nucleus of an atom
Answer:
electrons
Explanation:
Electrons are the negatively charged atoms that orbit around the nucleus of an atom
The process in which substances are changed into different substances is called
A. Chemical property
B. Physical change
C. Physical property
D. Chemical change
Two elements in the same group may have the same ion charge.
A. True
B. False
A polar covalent bond involves _______________ of valence electrons?
A. an equal sharing
B. a transfer
C. an electrostatic attraction
D an unequal sharing
Answer:
1. chemical change
2. true
3. an unequal sharing
Explanation:
Two atoms bonded together will remain some distance apart, minimizing the Question 1 options: A) potential energy of the bond. B) bond distance. C) number of valence electrons in the bond. D) partial charge of the bond. Question 2 (5 points) BeH2 has no lone pairs of electrons. What's the structure of this molecule? Question 2 options: A) Tetrahedral B) Bent C) Octahedral D) Linear Question 3 (5 points) In KCl, how are the valence electrons distributed? Question 3 options: A) The electrons are transferred from K to Cl. B) The electrons are unequally shared between K and Cl, forming a polar covalent bond. C) The electrons are shared between many K and Cl ions, creating a "sea of electrons." D) The electrons are equally shared between K and Cl, forming a covalent bond. Question 4 (5 points) Chlorine can bond with fluorine to form ClF. Chlorine can also bond with lithium to form LiCl. Which compound will have a greater partial charge? Question 4 options: A) Both compounds will have the same partial charge. B) ClF C) LiCl D) Neither compound will have partial charge. Question 5 (5 points) Which of the following elements will not form a polar covalent bond with oxygen? Question 5 options: A) Hydrogen B) Oxygen C) Sodium D) Fluorine Which process is used to produce gases from solutions of salts dissolved in water or another liquid? Question 6 options: A) Electrolysis B) Polar covalent bonding C) Ionic bonding D) Metallic bonding Question 7 (5 points) Saved A chemical reaction has the equation AgNO3 (s) + NaCl (s) → AgCl (s) + NaNO3 (s). What type of reaction occurs between AgNO3 and NaCl? Question 7 options: A) Decomposition B) Double displacement C) Single displacement D) Synthesis
Answer:
1) potential energy of the bond.
2) Linear
3) The electrons are transferred from K to Cl.
4) ClF
5) Oxygen
6) Electrolysis
7) Double displacement
Explanation:
As two atoms approach each other in a bonding situation, the potential energy of the bond is minimized as the internuclear distance of the bonding atoms decreases.
BeH2 has two electron domains and the central beryllium atom is sp2 hybridized. According to valence shell electron pair repulsion theory. A molecule having two regions of electron density will lead to a linear molecule.
KCl is an ionic compound hence there is a transfer of electrons from K(metal) to Cl(nonmetal).
ClF has partial charges because it contains a polar covalent bond. The partial charges arise from the dipole within the molecule. LiF is a pure ionic compound formed by transfer of electrons from Li to F. The species possess full and not partial charges.
When an oxygen atom bonds with another oxygen atom, what has been formed is a homonuclear covalent bond. Since the electro negativity of the both atoms is exactly the same, a pure covalent bond is formed. Recall that polar covalent bonds are formed when there is a significant electro negativity difference between the bonding atoms.
When direct current is passed through certain salt solutions during electrolysis, gases may be evolved and collected at the appropriate electrodes.
A double-replacement reaction is a reaction in which the cations and anions present in two different ionic compounds that are reacting together exchange their positions to form two new compounds on the product side. For instance, look at the reaction shown in question 7 as a typical example of this;
AgNO3 (s) + NaCl (s) → AgCl (s) + NaNO3 (s).
Summarize our current
understanding of atomic structure.
Include the two parts, where the
three particles are located, and
where the mass and volume in an
atom mainly exist.
Answer:
Atoms have protons and neutrons in the center, making the nucleus, while the electrons orbit the nucleus. The modern atomic theory states that atoms of one element are the same, while atoms of different elements are different.Atoms consist of three basic particles: protons, electrons, and neutrons. The nucleus (center) of the atom contains the protons (positively charged) and the neutrons (no charge). The outermost regions of the atom are called electron shells and contain the electrons (negatively charged).
Atoms have three particles called protons, electrons, and neutrons. The protons and neutrons are located at the center.
What is an atom?The nucleus of an atom is made up of protons and neutrons, and it is orbited by electrons. According to the current atomic theory, atoms of the same element are the same, whereas atoms of different elements are distinct.
Protons, electrons, and neutrons are the three fundamental particles that make up an atom.
The protons (positively charged particles) and neutrons are found in the nucleus (center) of an atom (no charge). The electrons are located in the outermost portions of the atom, which are known as the electron shells (negatively charged).
Therefore, Atoms have three particles called protons, electrons, and neutrons. The protons and neutrons are located at the center.
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In three separate trials and under the same conditions, you measure a gas's density to be 2.865 kg/m^3, 2.852 kg/m^3, and 2.860 kg/m^3. the actual density of the gas is3.214 kg/m^3. evaluate the precision and accuracy of your measurement.
Out of given data, all data is close to actual value, so all are precise but only first data is very much close to actual value so it is accurate.
What is precision and accuracy?When measuring data, precision and accuracy are two crucial considerations. Both precision and accuracy indicate how closely a measurement comes to the real value.
But accuracy also indicates how closely a measurement resembles a known or recognized value, while precision indicates how repeatable a measurement is, even if it is far from the acceptable value. Out of given data, all data is close to actual value, so all are precise but only first data is very much close to actual value so it is accurate.
Therefore, out of given data, all data is close to actual value, so all are precise but only first data is very much close to actual value so it is accurate.
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a 24.38 gram sample of iron is heated in the presence of excess sulfur. a metal sulfide is formed with a mass of 38.39 g. determine the empirical formula of the metal sulfide.
The empirical formula of the metal sulfide is FeS, indicating one iron atom bonded with one sulfur atom.
Determine the mass of iron (Fe) in the sample:
Mass of iron = 24.38 g
Determine the mass of sulfur (S) in the metal sulfide:
Mass of sulfur = 38.39 g - 24.38 g = 14.01 g
Convert the masses to moles using the molar masses:
Moles of iron = Mass of iron / molar mass of iron
= 24.38 g / 55.845 g/mol (molar mass of iron)
≈ 0.4369 mol
Moles of sulfur = Mass of sulfur / molar mass of sulfur
= 14.01 g / 32.06 g/mol (molar mass of sulfur)
≈ 0.4366 mol
Determine the simplest whole-number ratio of the moles of iron and sulfur:
Divide the moles of each element by the smallest number of moles (0.4366 mol in this case) to find the ratio:
Moles of iron / 0.4366 mol ≈ 0.4369 mol / 0.4366 mol ≈ 1
Moles of sulfur / 0.4366 mol ≈ 0.4366 mol / 0.4366 mol ≈ 1
The ratio is approximately 1:1.
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3- Which substance is not a macromolecule?
A diamond
B graphite
C silicon(IV) oxide
D sulfur
Answer:D
Explanation:plato
what will happen if some amount of hydrochloric acid is added to a solution of hf? group of answer choices the percent ionization of hf will remain unchanged. the percent ionization of hf will increase. ka for hf will increase. the percent ionization of hf will decrease. ka for hf will decrease.
If hydrochloric acid is added to a solution of HF, it will react with the HF to form H3O+ and F- ions. This reaction is a type of acid-base reaction, where the hydrochloric acid acts as the stronger acid and donates a proton to the HF, which acts as the weaker base.
The addition of hydrochloric acid will increase the concentration of H3O+ ions in the solution. This increase in the concentration of H3O+ ions will shift the equilibrium of the HF ionization reaction to the left, leading to a decrease in the percent ionization of HF. This is because the increased concentration of H3O+ ions will make it more difficult for the HF molecules to ionize and release H+ ions into the solution.
Therefore, the correct answer is that the percent ionization of HF will decrease. The Ka for HF will not change, as it is a constant value for a given temperature and is independent of the concentration of H3O+ ions in the solution.
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Does Anyone Answer To Your Question
Think about the lab procedure you just read. Label
each factor below V for variable or C for
constant.
✔ V. the amount of sugar in the solution
✔ C. whether the sugar is stirred
✔ V. the temperature of the solution
✔ C. the type of solute added
✔ C. the type of solvent used
And
Temperature is the ✔ independent. variable and
the amount of sugar in the solution is the
✔ dependent. variable.
Yes, the labeling of each factor in the lab procedure is correct:
V. the amount of sugar in the solution - Variable
C. whether the sugar is stirred - Constant
V. the temperature of the solution - Variable
C. the type of solute added - Constant
C. the type of solvent used - Constant
Additionally,
Temperature is the independent variable, as it is being manipulated or controlled by the experimenter.
The amount of sugar in the solution is the dependent variable, as it is the outcome or result that is being measured or observed based on the changes in the independent variable.
\(\huge{\mathcal{\colorbox{black}{\textcolor{lime}{\textsf{I hope this helps !}}}}}\)
♥️ \(\large{\textcolor{red}{\underline{\texttt{SUMIT ROY (:}}}}\)
If neon gas travels at 449 m/s at a given temperature, estimate the rate of diffusion of butane gas, C4H10, at the same temperature.
The rate of diffusion of butane gas at the same temperature is approximately 240 m/s.
Rate of diffusion of a gasThe rate of diffusion of a gas is directly proportional to its velocity at a given temperature. Therefore, we can use the ratio of the velocities of neon and butane gases to estimate the rate of diffusion of butane gas.
The molar mass of neon is 20.18 g/mol, and the molar mass of butane is 58.12 g/mol. Since both gases are at the same temperature, their velocities are proportional to the square root of the ratio of their molar masses:
\(\sqrt{(20.18 g/mol / 58.12 g/mol) }\)≈ 0.534
Therefore, we can estimate that the rate of diffusion of butane gas is about 0.534 times the velocity of neon gas. Multiplying the velocity of neon gas by this ratio, we get:
449 m/s x 0.534 ≈ 240 m/s
So, we can estimate that the rate of diffusion of butane gas at the same temperature is approximately 240 m/s.
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When pouring water, isopropyl, salt water and vegetable oil, what substances will rise to the top? Which will sink to the bottom? Will they mix? Explain.
According to the concept of solubility, pouring water in isopropyl will sink salt water will mix and vegetable oil will rise to the top.
Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.
The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance such as salts.
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select all of the following substances that exhibit hydrogen bonding? group of answer choices A. hf B. ch3nh2 C. ph3 D. ch4
The substances that exhibit hydrogen bonding are A. HF and B. \(CH_3NH_2\) .
The substances that exhibit hydrogen bonding are those that have hydrogen atoms bonded to highly electronegative atoms such as fluorine (F), oxygen (O), or nitrogen (N). Based on this criterion, the correct answer would be:
A. HF (hydrogen fluoride)
B. \(CH_3NH_2\) (methylamine)
C. \(PH_3\) (phosphine) and D. \(CH_4\) (methane) do not have hydrogen atoms bonded to highly electronegative atoms, so they do not exhibit hydrogen bonding.
Therefore, the substances that exhibit hydrogen bonding are HF and \(CH_3NH_2\) .Hence, option A and B is correct .
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When 496. 5 grams of Pb(NO3)2 reacts completely with KBr, how much will the
total mass of the products be? Explain your answer.
Mass mass problem - mass of reactant to mass of product
The total mass of the products is 853.8 g.
What is the total mass of the products?We know that we have to apply the principles of stoichiometry so as to be able to obtain the mass of the mass of the products and then the total mass of the products that is obtained in the reaction.
We have that in the question; 496. 5 grams of lead II nitrate reacts with potassium bromide is such a way that the lead II nitrate would be completely consumed in the reaction. This means that the lead II nitrate is the limiting reactant in the reaction.
Number of moles of the lead II nitrate = 496. 5 grams /331 g/mol
= 1.5 moles
If 1 mole of lead II nitrate produces 1 mole of lead II bromide
Mass of lead II bromide produced = 1.5 moles * 367 g/mol
= 550.5 g
If 1 mole of lead II nitrate produces 2 moles of potassium nitrate
1.5 moles of lead II nitrate produces 1.5 * 2 /1
= 3 moles of potassium nitrate
Mass of potassium nitrate = 3 moles * 101.1
= 303.3 g
Total mass produced = 550.5 g + 303.3 g
= 853.8 g
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Identify at least two physical properties (streak, fracture, etc.) of a mineral while using examples of common minerals that prominently feature those properties. Provide links or screenshots of the discussed minerals to illustrate the highlighted properties. Also, explain what mineral group it belongs to and why.
The two physical properties of a mineral can be color, streak and even cleavage also.
Color, streak, cleavage, hardness, specific gravity, fracture, luster, and crystal structure are only a few of the many diverse characteristics. I'll speak specifically about color and shine as they relate to diamonds and how they significantly impact the value of the individual stone. Diamonds are a type of carbon polymorph.
Polymorphism, as used in materials science, refers to the fact that a solid material can exist in more than one crystal structure or form. Isomerism in the form of polymorphism. The phenomena can be seen in any crystalline substance. A chemical element's polymorphism is referred to as allotropy. Pharmaceuticals, agrochemicals, pigments, dyestuffs, meals, and explosives all have practical applications for polymorphism. "A reversible transition of a solid crystalline phase at a given temperature and pressure (the inversion point) to another phase of the same chemical composition with a different crystal structure," according to IUPAC, describes a polymorphic transition.
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WILL MARK BRAINLEISTTTT
HELPPPPPP
Substitute symbols and formulas for names and write balanced equations for each of the
reactions described below.
a) When copper(II) carbonate is heated, it forms copper(II) oxide and carbon dioxide gas.
b) Ammonium nitrate decomposes to water and dinitrogen monoxide.
c) Barium hydroxide reacts with carbon dioxide to form barium carbonate and water.
d) Sodium reacts with water to produce sodium hydroxide and hydrogen gas.
Answer:
jkrifhcuhixjck
gvudd
Explanation:
dugucdsorfooggigj
a CUCO3(s) + ( I don't have the symbol on my phone ) delta CUo(s) + CO2(g)
b NH4NO3➡️ HNo3 + H2O
c. Ba(OH)2+CO2 ➡️ BaCO3+H20
d Na +H20 ➡️NaOH +h2
Explanation:
I think this should be it , I think that 8s the symbol for hydrogen gas if its not correct I'm sorry
Suppose The Reaction Temperature X( In ∘C) In A Certain Chemical Process Has A Uniform Distribution With A=−6 And B=6. (A)
The reaction temperature X in a certain chemical process follows a uniform distribution with parameters A = -6°C and B = 6°C.
What is the probability density function (PDF) of the uniform distribution in this case?In a uniform distribution, the probability density function (PDF) is constant within a given interval and zero outside that interval. Since the reaction temperature follows a uniform distribution with parameters A = -6°C and B = 6°C, the interval for the temperature values is [-6, 6].
The PDF of a uniform distribution is given by:
\(\[ f(x) = \frac{1}{B - A} \]\)
Substituting the values, we have:
\(\[ f(x) = \frac{1}{6 - (-6)} = \frac{1}{12} \]\)
This means that the PDF of the reaction temperature X in the chemical process is \(\frac{1}{12}\) within the interval [-6, 6], and it is zero outside this interval.
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