Help asappppp quickly only right answers aloud

if you add a little amount of an acid to an alkali, the pH of the solution will decrease. The pH at equivalence will depend on the relative strength of the acid present in solution.

have a great day!

Decomposition processes should appear here on Chemistry previous modules DBA, When I'm done with the DBA, I'll respond to this query.

Opposition or antagonism to a force, effect, or movement is a reactionary act, process, or occurrence. especially: a reaction to a particular treatment, circumstance, or stimulus; leaning toward a past and typically antiquated political or social system or policy.

Combination, disintegration, single-replacement, twofold, and combustion are the five fundamental types of chemical reactions. You can classify a reaction into one of these groups by looking at the reactants and products.

To know more about reactions visit:

https://brainly.com/question/28984750

#SPJ1

Answer: I was asked to classify equations, balance equations, and define + explain the law of conservation of mass

Answer:

Explanation:

dilute hydrochloric acid is added to distilled water to increase the ionization of water.

The if/else statement that determines the presence of a fever based on temperature as follows:

We consider a scenario where the temperature of a system is being evaluated.

If the measured temperature is found to be greater than 98.6 degrees Fahrenheit (37 degrees Celsius), it indicates an elevated body temperature, commonly associated with fever.

In this case, we assign the value "true" to the variable "fever."

On the other hand, if the measured temperature is less than or equal to 98.6 degrees Fahrenheit (37 degrees Celsius), it suggests that the body temperature is within the normal range, and we assign the value "false" to the variable "fever."

This variable "fever" acts as a representation of whether a fever is present or not based on the temperature observation.

This logical statement allows us to assess the presence of a fever by comparing the measured temperature against the standard threshold commonly associated with elevated body temperature.

To know more about Body temperature here: brainly.com/question/26866637

#SPJ11

Answer:

12 mL

Explanation:

Según la pregunta;

V / V% concentración del fármaco = 12%

volumen de la solución = 100 ml

De;

V / V% = volumen de fármaco / volumen de solución

volumen de fármaco = V / V% × volumen de solución

volumen de fármaco = 12/100 × 100

= 12 mL

The % yield of Ca(OH)₂ : 62.98%

Percent yield is the compare of the amount of product obtained from a reaction with the amount you calculated

General formula:

Percent yield = (Actual yield / theoretical yield )x 100%

An actual yield is the amount of product actually produced by the reaction. A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients

Reaction

CaO + H₂O ⇒ Ca(OH)₂

mass CaO= 4.2 g

mol CaO(MW=56,0774 g/mol) :

\(\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{4.2}{56,0774 g/mol}\\\\mol=0.075\)

mol Ca(OH)₂ based on mol CaO

mol ratio CaO : Ca(OH)₂,= 1 : 1, so mol Ca(OH)₂ = 0.075

mass Ca(OH)₂(MW=74,093 g/mol) ⇒ theoretical

\(\tt mass=mol\times MW\\\\mass=0.075\times 74,093 g/mol\\\\mass=5.557~g\)

% yield :

\(\tt =\dfrac{actual}{theoretical}\times 100\%\\\\=\dfrac{3.5}{5.557}\times 100\%\\\\=62.98\%\)

Answer:

A

Explanation:

Mass is a measure of the amount of matter in an object.

The mass of a substance measures the amount of matter it contains. Therefore, option A is correct.

Mass can be explained as an intrinsic property of an object. Mass can be described the amount of matter in a body. Different atoms or different particles with the same amount of matter possess nonetheless different masses.

Mass can be experimentally determined by the body's inertia, meaning the resistance to an acceleration of the body when a net force is applied. The mass evaluates the strength of the gravitational attraction to the bodies.

The S.I. base unit of measurement of mass can be represented by the kilogram (kg) but it is not the same as that of weight. Mass can be defined as generally measuring the weight utilizing a spring scale, rather than a balance scale and comparing it to already known masses.

A body on the Moon will weigh less than on Earth due to the lower gravity on the moon but still have equal mass. Paul and Karen determined that the mass of a sample was 50 g which is the amount of matter it contains.

Learn more about mass, here:

brainly.com/question/13040516

#SPJ2

Answer:

Gas

Explanation:

The question is asking solid, liquid or gas. Gas particles are the smallest.

(a) sp2- hybrid orbital of C1 and p-orbital of O1 , because, central atom i.e. carbon has sp2-hybridization and in surrounded oxygen atom last electrons enters in p-orbital. (b) 1200 bond angle, because shape is trigonal planar.

Atomic orbitals are generally specific through a mixture of numerals and letters that constitute precise residences of the electrons related to the orbitals—for example, 1s, 2p, 3d, 4f. The numerals, referred to as primary quantum numbers, imply strength degrees in addition to relative distance from the nucleus. The simple names s orbital, p orbital, d orbital, and f orbital refer to orbitals with angular momentum quantum number ℓ = 0, 1, 2, and 3 respectively.

To learn more about atomic orbitals check the link below:

https://brainly.com/question/20319149

#SPJ4

Answer:

Six

Explanation:

Mᵣ                           =  46

Aᵣ(C) = 0.522 × 46 =  24

Difference              =  22

Less 1 O                  = -16

Aᵣ(H)                        =   6

The relative atomic mass of the H atoms is 6.

The molecule contains six hydrogen atoms.

Answer:

D

Explanation:

Nitrogen^2, Oxygen^2, Aluminum, Zinc

the others have combination

Answer: It will change to gas

Explanation: It will change to gas because of evaporation. When the heat intensifies it will happen.

To begin with, sucrose is C12H22O11. Additionally, we must determine how many moles of sucrose there are in a pound of sucrose:

The moles of sucrose are 454g, 342.30g, mol1, and 1.33mol.

Is sucrose a good sugar to use?

Brief Summary According to a University of California, Davis study that was published in the Journal of Clinical Endocrinology and Metabolism, sucrose, the more "natural form of sugar," may be just as harmful to your health as HFCS.

Is sugar a healthy food?

Your body only receives sugar when you consume sucrose like soda or candy, and typically too much of it. The threat is present here. You run the risk of major health problems if you consume too much added sugar (fructose or sucrose) in your diet.

To know more about sucrose visit:

https://brainly.com/question/3850162

#SPJ1

Take the 298 K reaction as an example. E° = 0.617 V What is the value of E when [Sn2+] and [Fe3+] are equal to 0.50 M. Sn2*(aq) + 2FE3*(aq) Sn4*(aq) + - 2F22*(aq)

In a chemical reaction, reactants undergo a chemical reaction and transform into products through a chemical process. For instance, when humans breathe in oxygen, it combines with glucose to create carbon dioxide, water, and energy. The response is provided below. C6H12O6 + O2 = 6CO2 + 6H2O + Energy.

When atoms establish or break chemical bonds, chemical processes take place. Reactants are the substances that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.

To know more about reaction visit:-

https://brainly.com/question/28984750

#SPJ4

There is one mole of strontium, four moles of hydrogen, two moles of carbon, and six moles of oxygen in one mole of Sr(HCO3)2. The given compound is strontium hydrogen carbonate (Sr(HCO3)2). The formula shows that each molecule contains one strontium (Sr), two hydrogen (H), two carbon (C), and six oxygen (O) atoms.

To determine the number of moles of each element in one mole of Sr(HCO3)2, we need to use the following steps:Calculate the molecular weight of the compound by adding the atomic weights of its elements:

Molecular weight of Sr(HCO3)2 = (1 x atomic weight of Sr) + (2 x atomic weight of H) + (2 x atomic weight of C) + (6 x atomic weight of O)

Atomic weight of Sr = 87.62 g/mol

Atomic weight of H = 1.01 g/mol

Atomic weight of C = 12.01 g/mol

Atomic weight of O = 16.00 g/mol

Therefore, the molecular weight of Sr(HCO3)2 is: Molecular weight of Sr(HCO3)2

= (1 x 87.62) + (2 x 1.01) + (2 x 12.01) + (6 x 16.00)

Molecular weight of Sr(HCO3)2 = 267.63 g/mol

Find the number of moles of each element in one mole of the compound:

Moles of Sr in 1 mole of Sr(HCO3)2

= 1Moles of H in 1 mole of Sr(HCO3)2

= 4Moles of C in 1 mole of Sr(HCO3)2

= 2Moles of O in 1 mole of Sr(HCO3)2 = 6

Therefore, there is one mole of strontium, four moles of hydrogen, two moles of carbon, and six moles of oxygen in one mole of Sr(HCO3)2.

To learn more about strontium visit;

https://brainly.com/question/11679125

#SPJ11

Spent lead-acid batteries are exempt from hazardous waste regulations if they are regenerated to produce new lead-acid batteries.

Hazardous wastes are waste which present harm or danger to the environment as the plants. animals, and humans living in that environment,

Hazardous wastes include:

Spent lead-acid batteries are exempt from hazardous waste regulations if they are regenerated to produce new lead-acid batteries.

In conclusion, hazardous wastes pose threats to the environment.

Learn more about wastes at: https://brainly.com/question/3406415

#SPJ1

The aqueous solution with the lowest freezing point and highest boiling point is 0.100 M sucrose.

Freezing point depression and boiling point elevation are directly proportional to the molality (moles of solute per kilogram of solvent) of a solution. Since 0.100 M sucrose has the highest concentration of solute, it will also have the greatest effect on both freezing point depression and boiling point elevation. NaCl, CaCl2, and Na3PO4 have similar molalities, so they will have similar effects on freezing point depression and boiling point elevation.A colligative property is a physical characteristic that depends on the quantity of solute supplied rather than the type of solute; for example, the freezing point will be lowered by the same amount of degrees Celsius whether we add 1000 sugar or salt particles to water.

Learn more about freezing point here:

https://brainly.com/question/3121416

#SPJ4

CH3NH−(pKa=40) and CH2=CH− (pKa=44)  are the bases that cannot deprotonate acetylene. Therefore, the correct answer is b) Only I and III.

Acetylene is an alkyne, and it has a pK_a of 25. Therefore, only bases with a higher pK_a can deprotonate it. In this case, only CH3NH− (pKa=40) and CH2=CH− (pKa=44) have higher pK_a values, and they are the only bases that cannot deprotonate acetylene. CO2−3 (pka=10.2) and (CH3)3CO− (pka=18) have lower pK_a values, so they can deprotonate acetylene.

Therefore, the correct answer is b) Only I and III.

You can learn more about Acetylene at

https://brainly.com/question/15346128

#SPJ11

Answer:

Helium is a noble gas, so it's nonreactive. In contrast, hydrogen is very reactive. It would be dangerous to have explosive balloons.

Answer:

Explanation:

A neutral titanium atom will have 22 electrons. Therefore, its electron configuration will be 1s2 2s2 2p6 3s2 3p6 4s2 3d2.

Answer:

Na2S + 2HCl -------------------> 2NaCl + H2S.

2NaCl --------------------------> 2Na + Cl2

Na2S + 2HCl ---------------> 2NaCl + H2S

Explanation:

Stoichiometry Is one of important aspect of Chemistry that will be taught to student learning chemistry. It shows the relationship between the reactants and the product. For instance, the amount a reactant reacts to form the products and the amount of products formed.

The balanced chemical reaction for the equation of reaction given in the question is given below;

Na2S + 2HCl -------------------> 2NaCl + H2S.

One mole of Na2S reacts with 2 Moles of HCl to produce 2 moles of NaCl and one mole of H2S.

2NaCl --------------------------> 2Na + Cl2

Two moles of NaCl breaks down into 2 moles of Sodium(solid) and one mole of Chlorine.

Na2S + 2HCl ---------------> 2NaCl + H2S

One mole of N2S reacts with 2 moles of HCl to produce 2 moles of NaCl and one mole of H2S.

-2832.79 kJ heat is produced by combustion of 125 g of methanol under standard state condition.

The typical enthalpy of methanol combustion,

It implies that:

When methanol is burned, it produces 726.1 kJ of energy.

Methanol's molar mass is 32.04 g/mol.

So,

When methanol is burned, 32.04 g of it produces 726.1 kJ of energy.

When methanol is burned, it produces 726.1/32.04 kJ of energy.

125 g of methanol is released during burning (726.1/32.04)

energy of 125 kJ

kilojoules (kJ) released: 2832.79

The basic aliphatic alcohol and an organic compound, methanol has the chemical formula CH3OH. It has a pronounced alcoholic odor resembling that of ethanol and is a colorless, colorless, light, volatile liquid that is combustible.

To know more about energy visit :

https://brainly.com/question/1932868

#SPJ4

The equilibrium constant for the un-catalyzed reaction is 0.9

The enzyme triose phosphate isomerase catalyzes the reaction in the forward direction as part of the glycolytic pathway. It follows simple Michaelis-Menten kinetics.

Typical cellular concentrations:

triose phosphate isomerase = 0.1 nM

dihydroxyacetone phosphate = 5 µM

glyceraldehyde-3-phosphate = 2 µM

So, equillibrium constant is

K = \(\frac{[P]}{[S]}\)

K = \(\frac{ glyceraldehyde-3-phosphate}{dihydroxyacetone phosphate}\)

Therefore, The equilibrium constant for the un-catalyzed reaction is 0.9

Learn more about equillibrium here;

https://brainly.com/question/25657597

#SPJ4

The dichotomous key for the identification of gram-positive bacteria, the next test you would do after identifying a gram-positive staphylococcus that is positive for catalase production but negative for coagulase is to make a lawn of bacteria on a Mueller Hinton agar plate and test for novobiocin sensitivity.

The information provided, if you have identified a Gram-positive staphylococcus that is positive for catalase production but negative for coagulase, the next test to perform according to the dichotomous key for the identification of Gram-positive bacteria (found in Experiment 16 ppt) would be to make a lawn of bacteria on a Mueller Hinton agar plate and test for novobiocin sensitivity.

learn more about bacteria here.

https://brainly.com/question/14805232

#SPJ11

The formulas for the given entities are described as follows:

a) [Cr(H2O)5Cl]2+

b) [Rh(NH2)4(NO2)2Br]3+

c) C4H16Cl3N4Ru.

d) [Rh(H2O)2(Cl)2]3+

e) Cl4H6N2Pt+2

Coordination compounds are molecules that poses one or a couple of metal facilities this is sure to ligands (atoms, ions, or molecules that donate electrons to the metal). These complexes may be impartial or charged. When the complicated is charged, it's miles stabilized through neighboring counter-ions

The formula for pentaaquachlorochromium(III) chloride is [Cr(H2O)5Cl]2+.

The formula for tetraamminedinitrorhodium(III) bromide is [Rh(NH2)4(NO2)2Br]3+

The formula for dichlorobis(ethylenediamine)ruthenium(III) is C4H16Cl3N4Ru.

The formula for diaquatetrachlororhodate(III) is [Rh(H2O)2(Cl)2]3+ .

The formula for triamminetribromoplatinum(IV) is Cl4H6N2Pt+2.

To learn more about coordination compound check the link below:

https://brainly.com/question/28304985

#SPJ4

The chemical formula of mentioned substances is as follows 1) SO₃ 2) K\(^+\) and NO₃\(^-\) 3) ΔH 4) Cu 5) Hg (l) 6)ZnCl₂.

Chemical  formula is a way of representing the number of atoms present in a compound or molecule.It is written with the help of symbols  of elements. It also makes use of brackets and subscripts.

Subscripts are used to denote number of atoms of each element and brackets indicate presence of group of atoms. Chemical formula does not contain words. Chemical formula in the simplest form  is called empirical formula.

It is not the same as structural formula and does not have any information regarding structure.It does not provide any information regarding structure of molecule as obtained in structural formula.

Learn more about chemical formula,here:

https://brainly.com/question/29031056

#SPJ4

KNO3 stock solution has a 6.0M concentration. The formula C1V1 = C2V2 may be used to determine how much stock solution is required to create 10.0L of a 1.2M solution of KNO3.

The stock solution's concentration is given as C1 (6.0M), and the required stock solution volume is given as V1. C2 is the target solution concentration (1.2M), whereas V2 is the required solution volume (10.0L). When the formula is rearranged to account for V1, we obtain V1 = (C2V2)/C1.

According to the data entered, V1 is equal to (1.2M * 10.0L)/6.0M, or 2.0L. In order to create 10.0L of a KNO3 solution at 1.2M, 2.0L of the stock solution is required. The concentration of the stock solution and the intended outcome must be kept in mind.

Learn more about  stock solution  at:

https://brainly.com/question/17018950

#SPJ1

Answer: A-Nebulae can form stars, comets cannot

Explanation: Simply comets get destroyed and Nebulae are often star-forming regions, such as in the "Pillars of Creation" in the Eagle Nebula. In these regions, the formations of gas, dust, and other materials "clump" together to form denser regions, which attract further matter, and eventually will become dense enough to form stars.

While Nebulae is a body of interstellar cloud, made of cosmic dust, hydrogen etc , Comets are balls of rocks, frozen gases, that revolve the Sun.

Nebulae can form stars, but comets cannot. Option A is correct

Nebulae is a different body of interstellar cloud, they are made out of cosmic dust, hydrogen, helium, and molecular clouds.

While Comets are balls of rock, frozen gases, and other particles that revolve around the Sun.

Read more about Galaxy

https://brainly.com/question/2905713