Ba(NO3)2 + 2LiOH → Ba(OH)2 + 2LiNO3

How many nitrate ions are in the products and the reactants of the chemical equation?
A.
one in the reactants and two in the products
B.
three in the reactants and three in the products
C.
two in the reactants and two in the products
D.
six in the reactants and three in the products

Answer:

answer. the measure. is f=90 the equbaliint is 180

Explanation:

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Answer:

0.112M is molarity of the Na₂S₂O₃ solution

Explanation:

First, the KIO₃ reacts with KI as follows:

KIO3 (aq) + 5 KI (aq) + 6 HCl (aq) → 3 I2 (s) + 6 KCl (aq) + 3 H2O (l)

Then, the I₂ produced reacts with the Na₂S₂O₃ as follows:

2 Na2S2O3 + I2 → Na2S4O6 + 2 NaI

Thus, to solve this question, we need to obtain the moles of KIO₃ that react, then, the moles of I₂ produced -Using the chemical reaction- to find the initial moles of Na₂S₂O₃. With these moles and the volume we can find molarity of the solution:

Moles KIO₃:

21.45mL = 0.02145L * (0.0135mol/L) = 2.896x10⁻⁴ moles KIO₃

Moles I₂:

2.896x10⁻⁴ moles KIO₃ * (3mol I₂ / 1mol KIO₃) = 8.687x10⁻⁴ moles I₂

Moles Na₂S₂O₃:

8.687x10⁻⁴ moles I₂ * (2mol Na₂S₂O₃ / 1mol I₂) = 1.737x10⁻³ moles Na₂S₂O₃

As the volume of the titrated solution is 15.55mL, molarity is:

1.737x10⁻³ moles Na₂S₂O₃ / 0.01555L =

“Many of the objections are long standing but apparently unknown to many geophysicists, while some are peculiar to the new global tectonics. The conclusions drawn, in order of probability, are (1) the continents have almost certainly not moved with respect to each other; (2) convection is not active throughout the whole mantle; (3) even if convection is active in the upper mantle it cannot account for drift; (4) pole positions derived from paleomagnetism, and results of this method of investigation in its global form generally, are afflicted with an unknown cause of error and are in any case too inexact for drift reconstructions.”

(Wesson, 1972)

Answer:

it can affect your growth, like it can stunt your growth and could get health problems. pls make me brainiest.

Answer:

Oxygen mucury carbon dioxide and platinum

Explanation:

Answer:

C. 3

Explanation:

volume = length×width×height

3×3×3=27

Answer:

choice B

58Fe^2+

Explanation:

hope this helped

Answer:The standard Gibbs energy change at 300K for the reaction 2A⇔B+C is 2494.

Explanation:

ΔG = free energy at any moment.

ΔGo = standard-state free energy.

R is the ideal gas constant = 8.314 J/mol-K.

T is the absolute temperature (Kelvin)

lnQ is natural logarithm of the reaction quotient

Answer:

interphase

Explanation:

they spend most time in interphase

answer is below!! hope this helped

A 6.0-V battery does 1200 J of work transferring charge, then 100C charge is transferred.

One or more electrochemical cells with external connections for powering electrical equipment make up an electric battery, which is a source of electric power.

A battery's positive terminal serves as the cathode and its negative terminal serves as the anode when it is delivering electricity.

Electricity is accepted, stored, and released on demand by batteries and similar devices. Like many other common energy sources, batteries store energy through chemistry in the form of chemical potential.

For instance, until they are burned, logs store energy in their chemical bonds for later conversion to heat.

V = 12 V

W = 1200 J

q = ?

V = W / q

12 = 1200 / q

q = 100 C

Thus, A 6.0-V battery does 1200 J of work transferring charge, then 100C charge is transferred.

To learn more about battery follow the link;

https://brainly.com/question/19225854

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Answer:

Food and cell type

Explanation:

Kingdoms are by far the most basic legal structure for living objects. Living objects are classified into realms depending on how they consume food, the kinds of cells that produce their bodies, and the total type of tissue in their bodies.

Answer:

a. Ca(OH)₂ = 74.08 g/mol

b. H₂O₂ = 34 g/mol

c. KCl = 74.55 g/mol

d. NaH₂PO₄  = 119.97 g/mol

Explanation:

In order to determine the molar mass of each compound we need to sum, the molar mass of each element.

a. Ca(OH)₂

40.08 g/mol (Ca) + 2 . 16 g/mol (O) + 2 . 1 g/mol (H) = 74.08 g/mol

b. H₂O₂ → 2 . 1 g/mol (H) + 2 . 16 g/mol (O) = 34 g/mol

c. KCl → 39.1 g/mol (K) + 35.45 g/mol (Cl) = 74.55 g/mol

d. NaH₂PO₄

23 g/mol (Na) + 2 . 1 g/mol (H) + 30.97 g/mol (P) + 4 . 16 g/mol (O) = 119.97 g/mol

Answer:

Explanation:

Chemistry is often referred to as the central science because it joins together physics and mathematics, biology and medicine, and the earth and environmental sciences. Knowledge of the nature of chemicals and chemical processes therefore provides insights into a variety of physical and biological phenomena.

Answer:

Science chemistry is the investigation of issue, examining its design, properties and conduct to see what happens when they change in substance responses. Thusly, it very well may be viewed as a part of actual science, close by stargazing, physical science and studies of the planet including geography.

Explanation:

.Science chemistry is fundamental for meeting our essential requirements of food, clothing, cover, wellbeing, energy, and clean air, water, and soil. Substance advances improve our personal satisfaction in various ways by giving new answers for issues in wellbeing, materials, and energy use.

Here are the absolute best motivations to concentrate on science.

,Science assists you with figuring out your general surroundings. ...

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comprehend item marks.

,,,Science can assist you with pursuing informed choices. ...

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Answer:

-15-12-14=-13

Explanation:

we simplify by opening the bracket

Answer:

The ball speeds up

Explanation:

Answer: The concentration of hydrogen ions is [tex]10^{-11}M[/tex] and the concentration of hydroxide ions is [tex]10^{-3}M[/tex]. Thus the concentration of hydroxide ions is more than the concentration of hydrogen ions.

Explanation:

pH or pOH is the measure of acidity or alkalinity of a solution.

pH is calculated by taking negative logarithm of hydrogen ion concentration.  

[tex]pH=-\log [H^+][/tex]

[tex]pOH=-\log[OH^-][/tex]

Putting in the values:

[tex]11=-\log[H^+][/tex]

[tex][H^+]=10^{-11}M[/tex]

[tex]pH+pOH=14[/tex]

[tex]pOH=14-11=3[/tex]

[tex]3=-log[OH^-][/tex]

[tex][OH^-]=10^{-3}M[/tex]

Thus the concentration of hydroxide ions is more than the concentration of hydrogen ions.

Answer:

4.0359398 × 10^-23 g

Explanation:

All explanations or thoughts led to that answer

Answer:

Increased

Explanation:

We know that the higher the temperature the higher the rate of reaction. This implies that as the temperature is increased, a reaction tends to proceed faster.

This follows from the collision theory, the higher the temperature, the higher the energy of the reacting particles hence they collide with each other faster and more effectively.

Thus the rate of reaction( or reaction time) for the carton of milk on the counter was increased.

Answer:

thermal energy: the part of total internal energy that can be transferred (a portion of the kinetic energy)

heat is the thermal energy that flows from one substance to another due to a temperature difference.

Thermal energy is measured in temperature change.

Thermal energy transfer stops when thermal equilibrium is achieved (Both substances at the same temperature).

conduction: Transfer of thermal energy through a solid object like heat transferring up a metal spoon from a hot cup of coffee.

convection: the transfer of thermal energy due to the movement of a liquid or gas caused by differences in temperature. Only in a fluid (liquid or gas). Breezes, ocean currents.

radiation: Transfer energy with or without matter. Warming from the Sun, microwave oven.

Answer:

Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas. Radiation is the transfer of thermal energy through thermal emission. Hope this helps!

Explanation:

Answer:

Answer:

-1464 kJ/mol

Explanation:

The balanced equation for the reaction is given as;

C2H4(g)+3O2(g)→2CO2(g)+2H2O(l) ΔH∘1=?

The enthalpy of the reaction is given by the equation;

Enthalpy of reaction = Enthalpy of products - Enthalpy of reactants

Products:

2CO2(g)+2H2O(l)

Enthalpy of Products = 2 (−394) + 2(−286)

Enthalpy of Products = -1360 kJ/mol

Reactants:

C2H4(g)+3O2(g)

Enthalpy of Reactants = 2 (52) + 3(0)

Enthalpy of Reactants = 104 kJ/mol

Enthalpy of Reaction =  -1360 - 104 = -1464 kJ/mol

Answer:

hello your question is incomplete attached below is the complete question

answer : attached below

Explanation:

The Lewis structure given in the question is incorrect attached below is the correct Lewis structure.

Lewis structure of a molecule is the representation of the valence electrons in a molecule

Answer:

When solid ice gains heat, it changes state from solid ice to liquid water in a process called melting. Ice cubes in a cold drink, for example, gradually melt. This process is called evaporation. Water vapor (steam) mixes with the air and seems to disappear.

Answer:

melting

when solid ice gains heat, it changes state from solid ice to liquid water in a process called melting

this is correct answer

I hope it's helpful for u ...

Answer:

9.2288 L

Explanation:

The equation of the reaction is given as;

2 Ca(NO3)2 → 2 CaO + 4 NO2 + O2

From the reaction;

2 mol of Ca(NO3)2 produces 4 mol of NO2

Converting 33.8g to Number of moles;

Number of moles = Mass / Molar mass

Number of moles = 33.8 g / 164.088 g/mol

Number of moles = 0.206 mol

2 = 4

0.206 = x

Solving for x;

x = 0.206 * 4 / 2

x = 0.412 mol

At STP;

1 mol = 22.4 L

0.412 mol = x

Solving for x;

x = 0.412 * 22.4 = 9.2288 L

Answer:

the highest frequency

Explanation:

Answer:

0.04

Explanation:

Answer:

Lithium has a smaller atomic radius than potassium

Explanation:

Lithium has fewer electrons therefore fewer orbitals (1s2, 2s1) vs Potassium with more electron and therefore orbitals (1s2, 2s2, 2p6, 3s2, 3p6, 4s1)