the formula for nitrogen decoxide is N2O5
Once an action plan is in place, it should not be changed.
Please select the best answer from the choices provided.
ОТ
OF
Answer:
F = False
Explanation:
An action plan is a plan that an individual or a firm creates, that contains their objectives, aims, strategies , which they require to achieve their specific goals.
An action plan is very detailed, streamlined and straight to the point. It contains a series or a number of steps or tasks that an individual must embark on in other to achieve their end goal.
WHEN AN ACTION PLAN AS BEEN PUT IN PLACE OR SET IN MOTION, IT CAN BE CHANGED OR ALTERED. This is because the aim of a action plan is to achieve the end goal of an individual or a firm. As long as the changes made in the action plan does not hinder the achievement of those goals then the action plan can be changed.
Some of the very common reasons why action plans are changed or modified includes:
a) To make the action plan more flexible.
b) To track and monitor your progress in achieving your end goal. If there is a delay, you can easily track it out on your action plan and modify it.
In other to create an action plan, it is very important that the goals of such that individual or firm is very well defined and clear from the beginning. Action plans must always be monitored, and updated regularly.
Answer:
F, false
Explanation:
i took the quiz on edge
How many grams of potassium chloride (KCl) can be dissolved in 68.0g of water at 40°C? Please help.
Answer:
The problem provides you with the solubility of potassium chloride,
KCl
, in water at
20
∘
C
, which is said to be equal to
34 g / 100 g H
2
O
.
This means that at
20
∘
C
, a saturated solution of potassium chloride will contain
34 g
of dissolved salt for every
100 g
of water.
As you know, a saturated solution is a solution that holds the maximum amount of dissolved salt. Adding more solid to a saturated solution will cause the solid to remain undissolved.
In your case, you can create a saturated solution of potassium chloride by dissolving
34 g
of salt in
100 g
of water at
20
∘
C
.
Now, your goal here is to figure out how much potassium chloride can be dissolved in
300 g
of water at this temperature. To do that, use the given solubility as a conversion factor to take you from grams of salt to grams of water
300
g H
2
O
⋅
34 g KCl
100
g H
2
O
=
102 g KCl
You should round this off to one sig fig, since that is how many sig figs you have for the mass of water
∣
∣
∣
∣
¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯
a
a
mass of KCl
=
100 g
a
a
∣
∣
−−−−−−−−−−−−−−−−−−−−−−−
Explanation:
Based on the solubility curve, 27.2 g of KCl will dissolve in 68.0 g of water.
What is a solubility curve?A solubility curve is a curve which plots the amount of solute that can dissolve in a given volume of solvent against changes in temperature.
The solubility of a gives the amount that of solute that can dissolve in a given volume of solvent at a given temperature.
Based on the solubility curve above, 40 grams of potassium chloride (KCl) can be dissolved in 100.0g of water at 40°C.
Solubility of KCl at 40 °C = 0.4 g/g of water
Mass of KCl that can dissolve in 68.0 g of water = 0.4 × 68 = 27.2 g
Therefore, 27.2 g of KCl will dissolve in 68.0 g of water.
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An oil tanker spills a large amount of oil near the ocean shoreline. Which application of chemistry would best solve this problem?
7. What are the coefficients when the equation below is balanced?
CH4 + 02 → __CO2 + ____ H2O
A)1,2,1,2
B)1,3,4,1
C)1,2,3,4
D)2, 2, 1, 2
Answer:
A
Explanation:
Answer:
A
Explanation:
In order to balance an equation,the number of atoms of elements on the right side must equal the number of atoms of the same elements on the left side.After balancing the equation,C has 1 atom on both the left and right side,H has 4 atoms each on both sides of the equation and O has 4 atoms each on both sides of the equation,hence balanced.
2 Pc
What energy transfer is occurring when you make a call on a phone?
A. electrical to chemical
B. heat to sound
C. electrical to sound
O
OD. chemical to light
Reset Selection
Answer:
electrical to sound
Explanation:
The total energy of a system remains constant always. In case of a phone, the battery of phone has chemical items. The chemical energy of the battery gets converted to the electrical energy into the phone. As a result, the electrical energy gets converted to sound energy.
Hence, the correct option is (C) "electrical to sound energy".
Elastic energy is stored when an object is stretched. Is this an example
of potential or kinetic energy?
A. Neither
B. Both
d
C. Kinetic
O
D. Potential
Reset Selection
Answer:
D: potential
Explanation:
1. What is the name for AuCl3?
A)Gold chloride
B)Gold (III) chloride
C)Gold (I) chloride
D)Gold chloride (III)
Answer:
Gold(III) chloride
Explanation:
41. Which pair of compounds could combine to produce an ester?
I. CH3- CH2 - CH2 - CH3
II. CH3- CH2 - CH2-CH2-OH
III. CH3- CH2 - CH2-COOH
IV. CH3- CH2- CH2- COH
a. I and II
b. II and III
c. II and IV
d. III and IV
Answer: b. ii and iii
Explanation:
The ester, Butyl Butanoate is formed when Butanol reacts with Butanoic acid
as seen below;
CH3-CH2-CH2-CH2-OH + CH3-CH2-CH2-COOH ---->
Butanol Butanoic acid
CH3-CH2-CH2-COOCH2-CH2-CH2-CH3 + H2O
Butyl Butanoate Water
Which of the following is a strong acid?
A. HF (Hydrofluoric acid)
B. NH3 (Ammonia)
C. NaOH (Sodium hydroxide)
D. HCI (Hydrochloric acid)
Answer:
D. HCI (Hydrochloric acid)
Explanation:
correct me if im wrong but im pretty sure thats the answer
Initial temperature of metal =
С
Initial temperature of water =
°C
Final temperature of both =
Answer:
52.0 °C
Explanation:
How many moles of AlF3 are present if a scientist isolates 1.28 x 10^27 molecules of AlF3? Show your work in the space below
4.00 moles
2,126 moles
0.00341 moles
2.00 moles
Answer:
The answer is 2,126 moles
To find the number of moles we use the formula;
N = n × L
where
N is the number of entities
n is the number of moles
L is the Avogadro's constant which is
6.023 × 10^23
n = N / L
N = 1.28 x 10^27 molecules
n = 1.28 x 10^27 / 6.023 × 10^23
n =2126.245
n = 2,126moles
Hope this helps
Mixtures and Solutions
A solution is made by dissolving
9.68 g of potassium chloride
(KCI) in 565 g of water.
What is the molality of the solution?
[?] m KCI
Molarm
Answer:
[ 0.23 ] m KCl
Explanation:
Take a look at the attachment below,
565 grams = 565.1000
=0.565 kg (H20)
molar mass (Potassium Chloride),
mass of Potassium + Mass of Chloride,
39.0983 + 35.453
=74 5513 g 1 mol
Given - 968 grams (Potassium chloride)
{ (9.68 g KCI) }
(74.5513 g KCI mol)
0.565 kg H2O
( 0.23 mol / kg ) - about ,
solution =0.23 in KCI
[0.23] m KCI
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What is the formula for CaS
Answer:
Explanation:
Calcium sulfide is the chemical compound with the formula CaS.
What are crystalline solids?
A. Solids with heterogeneous organization
B. Solids with a repeating atomic pattern
O C. Solids with a random atomic structure
D. Solids that break apart in jagged pieces
To solve this we must be knowing each and every concept related to crystalline solids. Therefore, crystalline solids are the solids with a repeating atomic pattern. the correct option is option B.
What is crystalline solids?One form of solid-state material is crystalline solids. Solids are substances with a melting point higher than ambient temperature at atmosphere pressure. Solids are classified into two categories based just on arrangement of their constituents: amorphous solids and crystalline solids.
Crystalline solids are solids with a regular but three-dimensional arrangement of component units including such (atoms, molecules, or ions). Crystalline solids are the solids with a repeating atomic pattern.
Therefore, crystalline solids are the solids with a repeating atomic pattern. the correct option is option B.
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A sample of liquid mercury is heated from 20°C to 40°C. Which measurement of the sample will increase during this process? volume, density, mass
its volume this is the answer because the mercury will turn into gas. gas has more volume because it takes up more space as it spreads.
Answer: It’s Volume
Explanation:
If you want to lift a 30-kg box to a height of 1 m, how much work will it take?
A. 300 J
B. 147 J
C. 294 J
D. 30 J
If we want to lift a 30 kg box to a height of 1 m Ans is 294 J
Explanation:
Ans is 249 J
Write the equilibrium expression for the following reaction. Based upon the value of K, would you expect more or less product to be in the equilibrium mixture? Why?
Answer:
1. K = [CaCO3] [H2]⁴/ [CaO] [CH4] [H2O]²
2. More products are obtained at equilibrium since the equilibrium constant is very large.
Explanation:
1. Determination of the expression for the equilibrium constant, K.
The equilibrium constant, K for a given reaction is simply the ratio of concentration of the products raised to their coefficient to the concentration of the reactants raised to the coefficient.
The balanced equation for the reaction is given below:
CaO(s) + CH4(g) + 2H2O(g) —> CaCO3(s) + 4H2(g)
Therefore, the equilibrium constant, K for the above equation is:
K = [CaCO3] [H2]⁴/ [CaO] [CH4] [H2O]²
2. From the question given, the equilibrium constant is 2344.
Since the equilibrium constant is very large, it therefore means that more product are obtained at equilibrium.
4. Which of the following statements correctly describe atoms? Select all that apply.
A)Atoms have mass,
B)Atoms are the basic unit of a chemical element.
C)Matter is made of atoms.
D)Atoms take up space.
Answer:
all of the above
Explanation:
adams take up space they take up mass they are the basic chemical unit and matter is made of adams
Answer:
All of them except "Elements are the basic unit of atoms."
Explanation:
I took the quiz :D
Does a precipitate form when a solution of calcium chloride and a solution of mercury(I) nitrate are mixed together? Write the net ionic equation.
Answer : Yes, a precipitate form when a solution of calcium chloride and a solution of mercury(I) nitrate are mixed together.
The net ionic equation will be,
[tex]2Hg^{+}(aq)+2Cl^{-}(aq)\rightarrow Hg_2Cl_2(s)[/tex]
Explanation :
In the net ionic equations, we are not include the spectator ions in the equations.
Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.
The given balanced ionic equation will be,
[tex]CaCl_2(aq)+2HgNO_3(aq)\rightarrow Ca(NO_3)_2(aq)+Hg_2Cl_2(s)[/tex]
The ionic equation in separated aqueous solution will be,
[tex]Ca^{2+}(aq)+2Cl^{-}(aq)+2Hg^{+}(aq)+2NO_3^{-}(aq)\rightarrow Hg_2Cl_2(s)+Ca^{2+}(aq)+2NO_3^{-}(aq)[/tex]
In this equation, [tex]Ca^{2+}\text{ and }NO_3^-[/tex] are the spectator ions.
By removing the spectator ions from the balanced ionic equation, we get the net ionic equation.
The net ionic equation will be,
[tex]2Hg^{+}(aq)+2Cl^{-}(aq)\rightarrow Hg_2Cl_2(s)[/tex]
Taking into account the definition of net ionic equation, a precipitate of Hg₂Cl₂ is formed when a calcium chloride solution and a mercury (I) nitrate solution are mixed.
The net ionic equation is a chemical equation for a reaction that lists only the species that participate in the reaction.
In other words, an ionic equation is a chemical equation where electrolytes in aqueous solution are written as dissociated ions. Usually this is a salt dissolved in water, where the ionic species are followed by (aq) in the equation, to indicate that they are in aqueous solution.
The balanced equation will be:
CaCl₂(aq) + 2 HgNO₃(aq) → Ca(NO₃)₂(aq) + Hg₂Cl₂(s)
where (aq) means aqueous and (s) solid.
Taking into account that:
All Cl⁻, Br⁻ and I⁻ salts are soluble. All salts of NO₃⁻, C₂H₃O₂⁻, ClO₃⁻ and ClO₄⁻ are soluble.The total ionic equation in separated aqueous solution will be:
Ca²⁺(aq) + 2Cl⁻(aq) + 2 Hg⁺(aq) + 2NO₃⁻(aq) → Ca²⁺ + 2NO₃⁻(aq) + Hg₂Cl₂(s)
A spectator ion is an ion that appears both as a reactant and as a product in an ionic equation.
Spectator ions can be either cations (positively charged ions) or anions (negatively charged ions).
When writing a net ionic equation, spectator ions found in the original equation are ignored. Thus, the total ionic reaction is different from the net chemical reaction.
In this case, Ca²⁺ and NO₃⁻ are the spectator ions because they appear unchanged in both the product and the reagent. So these ions cancel out by writing the net ionic equation and you get:
2Cl⁻(aq) + 2 Hg⁺(aq) → Hg₂Cl₂(s)
Since Hg₂Cl₂ is an insoluble salt, it will precipitate.
Finally, a precipitate of Hg₂Cl₂ is formed when a calcium chloride solution and a mercury (I) nitrate solution are mixed.
Learn more:
https://brainly.com/question/18896765?referrer=searchResultshttps://brainly.com/question/10553963?referrer=searchResultshttps://brainly.com/question/7018960https://brainly.com/question/24099019?referrer=searchResultshttps://brainly.com/question/10538922?referrer=searchResultsWhich type of reaction involves the release of energy into the surroundings? Options: endothermic reactions
exothermic reactions
Answer:
exothermic reaction
Explanation:
The definition of exothermic is:
describing a process that involves the release of energy into the surroundings by substances undergoing change.
Think of ex-othermic as energy exiting/ released and en-dothermic as energy entering.
Answer: it’s endothermic
Explanation:
Which animal group actually saw a drop in the number of endangered and threatened species between 1995 and 2005?
a Fish
b. Reptiles
c. Birds
d. Mammals
Answer:
Mammals
Explanation:
In 1865 a pond was surrounded by open fields today the same area is swampy and surrounded by a forest which process is responsible for this change?
Answer:
It is erosion
Explanation:
Ecological succession, the process by which the structure of a biological community evolves over time.
What is meant by ecological succession?Ecological succession is the process by which the mix of species and habitat in an area changes over time. Gradually, these communities replace one another until a climax community like a mature forest is reached, or until a disturbance, like a fire, occurs. Ecological succession is a fundamental concept in ecology.
Why does ecological succession occur?Ecological succession occurs due to the changes in the physical environment and population of species. It may also occur when the conditions of an environment suddenly and drastically change. For example, forest fires, wind storms, and human activities all greatly alter the conditions of an environment.
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What is an alloy? A. A substitution of one metal for another metal B. A metal with a changed oxidation state C. A combination of metal with another element D. A layering of one metal over another metal
The correct answer is the combination of a metal with another element.
An alloy is a combination of two or more metallic elements to make a stronger material. For instance, there are bronze alloys, brass alloys, and coin alloys.
We can confirm that an alloy is a combination of one metal with another metal because stainless steel is made of an iron and chromium alloy (iron is a metal; chromium is also a metal). Therefore, we can confirm that option C is the best choice.
What is an endothermic reaction?
O A. A reaction that produces heat
O B. A reaction that uses radiation waves
C. A reaction that absorbs heat
O D. A reaction that contains enthalpy
Answer:
C. A reaction that absorbs heat
Explanation:
I do not know Latin, but roughly speaking 'Endo' means inside, and 'thermic' means heat.
There are several types of chemical reactions, two of the important reactions are endothermic and exothermic. An endothermic reaction absorbs heat. The correct option is C.
What is endothermic reaction?The chemical reaction which proceed with the absorption of heat energy is defined as the endothermic reaction. In an endothermic reaction, the system gains heat and hence the enthalpy change ΔH will be positive.
In endothermic reaction, because of the absorption of heat, the enthalpy of the products will be more than that of the reactants. An example of endothermic reaction is shown as:
N₂ (g) + O₂ (g) → 2NO (g) ΔH = 180.5 kJ
So in endothermic reactions, the reactants absorb heat energy from the surroundings to produce the products. These reactions reduce the temperature of the surrounding area and thereby creates a cooling effect.
Thus the correct option is C.
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how does temperature affect spontaneity?
a. if triangleH and triangleS have opposite signs, the temperature will determine spontaneity.
b. if the temperature is high enough, any reaction will become spontaneous
c. temperature will affect spontaneity only if triangleH and triangleS are both positive
d. if triangleH and triangleS have the same sign, the temperature will determine spontaneity
PLEASE HELP TYSM!!!
Answer:
The correct option is d.
d) If ΔH and ΔS have the same sign, the temperature will determine the spontaneity
Explanation:
Consider the table attached at the bottom which shows Spontaneity and the sign of Enthalpy and Entropy terms.
We can clearly see from the table how temperature effects the Spontaneity.
If the signs of ΔH and ΔS are opposite, the spontaneity doesn't depend on the temperature.
If the signs of ΔH and ΔS are same, then the temperature effects the Spontaneity. If both have negative signs, reaction is spontaneous at low temperature. If both have positive signs, reaction is spontaneous at high temperature.
Answer:
D.
Explanation:
A pE x
Which statement is accurate about mass or weight?
Answer:
Mass is a scaler quantity while weight is a vector quantity
Explanation:
Hope it helps
Answer:
mass helps it
Explanation:
they can't change the mass only it can
What is chromatography used for? Select all that apply. ]
dissolving substances
separating liquids in a mixture
crystallizing substances
separating gases in a mixture
Answer:
Separating liquids in a mixture
Separating gases in a mixture
Explanation:
Chromatography is the separation of a mixture by passing it in solution or gas through a medium where the components move at different rates.
Answer:
separating liquids in a mixture
separating gases in a mixture
Explanation:
The six kingdom system was designed
to account for great variation in the
kingdom that contained the
Answer:
prokaryotes
I got it right
Which best describes the relationship between heat, internal energy, and thermal energy?
O Internal energy is heat that flows, and heat is the part of thermal energy that can be transferred.
Internal energy is thermal energy that flows, and thermal energy is the part of heat that can be transferred.
O Thermal energy is heat that flows, and heat is the part of internal energy that can be transferred.
O Heat is thermal energy that flows, and thermal energy is the part of internal energy that can be transferred.
Answer:
D) Heat is thermal energy that flow, and thermal energy is the part of internal energy that can be transformed.
Enthalpy of a molecule is the internal energy of a molecule. It can be due to translational motion, rotational motion, vibrionic motion or electronic motion. Therefore the correct option is option D
What is Enthalpy?Enthalpy term is basically used in thermodynamics to show the overall energy that a matter have. Enthalpy is directly proportional to specific heat capacity of a substances
Mathematically,
Enthalpy=mass of metal× specific heat capacity of metal× Change in temperature.
Enthalpy of a reaction can be calculated by substracting the total energy of reactant from the total energy of the product
Heat is thermal energy that flows, and thermal energy is the part of internal energy that can be transferred. Energy can neither be created nor be destroyed
Therefore the correct option is option D
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What is beta radiation?
Answer:
emission at a high speed or energy which often forms electrons