Answer:
C
Explanation:
Ionic compounds consist of ions, which are formed when elements gain or lose electrons through donating or receiving.
Ionic compounds are formed by atoms that gain/lose electrons and are held together by electrostatic forces. The correct option is C).
What are ionic compounds?Ions are charged particles that occur when an atom (or group of atoms) receives or loses electrons. Ionic compounds are substances made of ions. (A positively charged ion is a cation, whereas a negatively charged ion is an anion.)
When elements share electrons in a covalent connection to create molecules, they produce covalent or molecular compounds.
Chemical compounds include ionic compounds. They were held together by the ionic chemicals from which they were produced.
A marginally soluble ionic substance loses some of its solubility when a common ion is added to a solution because: Reaction to the ionization process known as the common ion effect
Therefore, the correct option is C) Atoms gain/lose electrons and are held together by electrostatic forces.
To learn more about ionic compounds, refer to the link:
https://brainly.com/question/29005103
#SPJ2
Which layer of the sun is responsible for producing the light shown in the picture above?
Chromosphere
Convective Zone
Photosphere
Radiative Zone
Answer:
The photosphere
Explanation:
The photosphere comes from the outermost layer of the sun
Pls give me brainliest
Answer:
nice i think he right
Explanation:
What type of bonding around a central atom would result in a trigonal planar
molecule?
Answer: Three groups bound to it with no lone pairs
i think...
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
What kind of solution would have a Ky value that is much less than 12
A. A strongly basic solution
B. A weakly acidic solution
C. A strongly acidic solution
D. A weakly basic solution
Answer:
The answer is option D.
A weakly basic solution
Hope this helps.
Answer:
Explanation: Apex a weakly acidic solution
The empirical formula is:
A. the actual number of atoms of each element in a molecule.
B. representation of a compound that shows how its atoms are arranged.
C. All of these
D. the relative number of atoms of each element, using the lowest whole ratio.
Reset Selection
Answer:
option c the relative number of atoms of each element using the lowest ratio because empirical formula gives the simplest-whole number ration of each element
e.g. the empirical formula of benzeneC6H6 in CH
Explanation:
I HOPE IT WILL HELP YOU
What is beta radiation?
Answer:
emission at a high speed or energy which often forms electrons
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:
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
Perform the following
mathematical operation, and
report the answer to the
appropriate number of
significant figures.
0.00325136 - 1.76527 =
Answer:
-1.76201864
Explanation:
0.00325136 - 1.76527 = 1.76201864
The concept of significant figures are mainly used by scientist and engineer to know the significance of digits in a measurement. Therefore, -1.76201 is the value on applying mathematical operation.
What is significant figures?Significant figures are the figures that indicate the degree of accuracy of a value. It tells about the precision of a value. It gives an idea about the digits that are necessary to indicate the experimental value.
Rules for counting significant figures are:
Number between 1 to 9 is always significant
Zeroes after a number has got no significance
Zeroes before a number has got no significance
Zeroes between number has got significance
0.00325136 - 1.76527
= -1.76201
Therefore, -1.76201 is the value on applying mathematical operation.
To learn more about Significant figures, here:
https://brainly.com/question/12656148?
#SPJ2
Why does reducing solute particle size increase the speed at which the solute dissolves in water? A. It exposes more of the solute to the water molecules. B. It makes the temperature of the water significantly higher. C. It raises the pressure of the water molecules on the solute. D. It makes the water molecules move around faster.
Answer:A
Explanation:For a given amount of solute, smaller particles have greater surface area. With greater surface area, there can be more contact between particles of solute and solvent.
Answer:
A. It exposes more of the solute to the water molecules.
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 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:
solve the following (3x10^9)(4x10^5)/(6x10^-3)
Answer"
[tex]2(10^{17})[/tex]
Explanation:
You can simply just plug this into your calc and you should get the answer. Alternatively, when you multiply exponents, you add them, so you know you answer would be something times [tex]10^{17}[/tex]. After finding that out, you multiply 3 by 4 (which is 12), and divide by 6, which gives you 2. Multiply the 2 together and you get your answer.
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
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:
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.
Calculate the molar mass of carbon tetrafluoride (CF4) in grams per mole, rounding to proper significant figures, if mc= 12.01 u and mF = 19.00 u.
Answer:
molar mass of carbon tetrafluoride (CF4) is
(12.01 × 1 ) + ( 4 × 19.00)
= 12.01 + 76
= 88.01u
= 88u
Hope this helps
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:
Use the chemical equation to find the answers. BaSO4 + H2SO4 → Ba(HSO4)2 Identify how many oxygen atoms are in the product. Identify how many oxygen atoms are in the reactant.
Answer:
Since the equation is balanced, So it have same number of oxygen in the reactants and well as product.
Oxygen in product = 8
Oxygen in reactant = 8
Answer:
Explanation:
i got prove thoooooo
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
Learn more about Solutions at https://brainly.com/question/24372553
#SPJ2
1. Convert 0.00006125 to scientific notation
Answer:
6.125 × 10^-5
Explanation:
You have to move the decimal place 5 times to the right. Remember in scientific notation the first number, (the number that comes before the 10) has to be between 1.0 and 9.99...
Which of the following inter-particle forces has the lowest potential energy?
A. ion-ion interaction
b. hydrogen bonding
c. dipole-dipole interaction
d. ion-dipole moment
Answer:
b. hydrogen bonding.
Explanation:
Hope it helps.
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.
To know more about endothermic reactions, visit;
https://brainly.com/question/23184814
#SPJ7
a sample of 30 11th graders were asked to select a favorite pattern out of 6 choices. The following display shows what their favorite color patterns where. The counts have been recorded in the accompanying table according to pattern and the number of students who selected that pattern. What is the missing value in the table? A.11 B.9 C.8 D.10
Answer:
B.9
Explanation:
Students: 30
Total counts: 21 + ?
3+6+6+4+2 = 21
30-21 = 9
The missing value in the table is 9
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:
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.
Learn more about solubility curve at: https://brainly.com/question/14366471
#SPJ2
What volume of air at 25°C and 1.00 atm can he stored in a 10.0 L high-pressure air tank if compressed to 25°C and 175 atm? please show your work!
Answer:
0.057 L
Explanation:
Data obtained from the question include:
Initial temperature (T1) = 25°C
Initial pressure (P1) = 1 atm
Initial volume (V1) = 10 L
Final temperature (T2) = 25°C
Final pressure = 175 atm
Final volume =.?
From the data obtained from the question, we can see that the temperature is constant. Therefore, we shall apply the Boyle's law equation to determine the new volume of air. This is illustrated below:
P1V1 = P2V2
1 x 10 = 175 x V2
Divide both side by 175
V2 = 10/175
V2 = 0.057 L
Therefore, the volume of air which can be stored when the tank is compressed is 0.057 L
What is the change in enthalpy of the first reaction below, given the enthalpies
of the other two reactions?
2NO(g) + O2(g) + 2NO2(g)
N,(8)+ O2(g) → NO(g)
N,(8)+O2(g) + NO2(g)
AH = 90 kJ/mol
AH° = 34 kJ/mol
A. 56 kJ
B. -112 kJ
C. 124 kJ
D. -248 kJ
Answer:
The correct option is;
B. -112 kJ
Explanation:
The parameters given are;
N (g) + O₂ (g) → NO (g) ΔH = 90 kJ/mol
N (g) + O₂ (g) → NO₂ (g) ΔH = 34 kJ/mol
The required chemical reaction is given as follows;
2NO (g) + O₂ (g) → 2NO₂ (g)
Therefore, the heat of formation of 2 moles of NO = 2 × 90 = 180 kJ
The heat of formation of 2 moles of NO₂ = 2 × 34 = 68 kJ
Hence, given that the heat of formation of O₂ at room temperature = 0 kJ/mol, we have;
Change in enthalpy of the chemical reaction = Heat of formation of the products - Heat of formation of the reactants
Change in enthalpy of the chemical reaction = 68 kJ - 180 kJ = -112 kJ
Change in enthalpy of the chemical reaction = -112 kJ.
Answer:
-112
Explanation:
got it right on test
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
Which of the following sources is considered to be most reliable for scientific
information?
A. Legislation regarding environmental issues
B. Article in an academic journal
C. Interpretation of a journal article
D. Political commentary on research
Answer:
The answer is D
Explanation:
Pls mark as brainliest