Describe the trends in atomic radii by checking the correct box. atomic radii from the left to right across a period tend to: increase. decrease. atomic radii from the top to the bottom of a group tend to: increase. decrease.

Answers

Answer 1

Answer:

1st is decrease

2nd increase

Explanation:

I just did it

Answer 2

Answer:

1. Decrease 2. Increase

Explanation:

Edge 2023


Related Questions

Which statement best describes how light and lenses work together?
Do someone no the answer

Answers

Answer:

Answer A

Explanation:

When light enters a lense it bends and changes direction, and then does this again when it leaves. leaving the correct image in the center

Name the compound
i: (CH3)2CHCOOH ​

Answers

Answer:

methylpropanoic is your answer

Are all the atoms in the same plane for cyclohexanone.

Answers

Answer:

the atoms in cyclohexanone are not in the same

Explanation:

but they are in a benzene ring! Cyclohexane has only sigma bonded carbons with bonds that stick out of the plane

Which animal feels no pain when they are exposed to acid?.

Answers

Researchers have found out why the African nak.ed mole-rat, one of the world's most unusual mammals, feels no pain when exposed to acid. The animals have an altered ion channel in their pain receptors that is inactivated by acid and makes the animals insensitive to this type of pain.

hope it helps...!!!

In a chemical reaction, when particle size is reduced, the rate of reaction increases because of increased surface area of the
reactants.
Why would increased surface area increase reaction rate?
-0)
A)
It increases the number of collisions among particles.
B)
It decreases the activation energy.
It increases the concentration.
D)
It decreases the temperature.

Answers

Answer:

option A

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An increased surface area would increase the reaction rate because it increases the number of collisions among particles.

What is rate of a reaction?

Rate of a reaction is the speed or length of time it takes for a reaction to take place.

The rate of a chemical reaction can be affected by the following:

Increase in surface area of reactantsIncrease in temperature

According to this question, when particle size is reduced, the rate of reaction increases because of increased surface area of the reactants.

This is because the increase in surface area increases the number of collisions among particle.

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What's the name of this molecule?

Answers

Answer:

option d

Explanation:

Water is able to act as an acid in some reactions.
T/F

Answers

Answer:

True.

Explanation:

Water can act as a base or an acid. This means it is amphiprotic.

Order the following pH values from most acidic to least acidic (most basic).
5.7
7.0
1.2
9.1

Answers

1.2, 5.7, 7.0, 9.1 in order most acidic to least

Answer: 1.2 to 5.7 to 7.0 to 9.1

Explanation: Highest acidic begins with 1


10 grams CH10 + excess O2 → ? grams CO2 + H2O

Answers

Answer:

20  gm  CO2

Explanation:

CH10   mole weight = ~ 22 gm

  each 22 gm CH10 produces 44 gm CO2

        44 / 22 = x / 10 = 20 gm

A solid substance turns directly into a gas. Which term describes this change?
deposition
evaporation
melting
sublimation

Answers

Answer:

sublimation

Explanation:

Deposition is like dew forming

evaporation is going from liquid to gas

melting is going form solid to liquid ( like ice does when it warms)

sublimation is going from solid directly to gas ( like moth balls)

A sample of methane occupies 3. 0 L at 200. C and 1. 4 ATM. What is the volume of the gas at STP?

Answers

Answer:

2.42 liters

Explanation:

P1V1/T1 = P2V2/T2       T 'S are in K

 STP is    273.15 K  and  1 atm

1.4(3) / 473.15   =   (1) ( V) /273.15

V = 2.42 liters

An aqueous solution has a hydroxide ion concentration of 1.20 × 10–2 M at 25°C. Calculate the pOH of the solution.

Answers

Given↷

[OH-] = 1.20 × 10^–2 MTemperature = 25°To find↷

pOH of the solutionAnswer ↷

pOH = 1.92Solution ↷

[OH-] = 1.20 × 10^–2 MpOH = - log [OH^1-]pOH = - log [1.20 × 10^–2]pOH = 1.92

Let's see

25°C is normal room temperature denotion

pOH

[tex]\\ \rm\Rrightarrow -log[OH^-][/tex]

[tex]\\ \rm\Rrightarrow -log[1.2\times 10^{-2}][/tex]

log(ab)=loga+logb

[tex]\\ \rm\Rrightarrow -log1.2-log10^{-2}[/tex]

[tex]\\ \rm\Rrightarrow -0.0791812460476+2[/tex]

[tex]\\ \rm\Rrightarrow 2.0791812460476[/tex]

Approximately 2

What is the most significant intermolecular force between water molecules?.

Answers

Answer:

cohesive force

Explanation:

The combustion of propane (C3H8) produces CO₂ and H₂O:
C₂H8 (g) +5O₂ (g) → CO₂ (g) + 4H₂O(g)
The reaction of 5.5 mol of O₂ will produce ____ mol of H2O

Answers

Answer:

4.4 moles of water

Explanation:

Propane is C3H8. Is the chemical equation, you wrote C2H8 which is wrong. Type everything properly and give a check before finally posting the question.

The chemical equation that is given, is not properly balanced. The BALANCED equation would be

C3H8 + 5O2 → 3CO2 + 4H2O

From this balanced chemical equation, we see that 5 moles of oxygen produce 4 moles of water.

5 moles of Oxygen → 4 moles of water

1mole of oxygen → [tex]\frac{4}{5}[/tex] moles of water

5.5 moles of oxygen → ([tex]\frac{4}{5}[/tex] × 5.5) moles of water = 4.4 moles of water

∴ The reaction of 5.5 mol of O2 will produce 4.4 mol of H2O. [Answer:]

Answer:

5.5

Explanation:

First, you will need to balance the equation ( the equation in your question is not balanced....typo?)

C2 H8    + 4 O2   ===> 2 CO2   + 4 H2O

Now, from the balanced equation:

O2 : H2O =  4/4 = 1/1

SO   5.5 MOLES  OF  O2  PRODUCES 5.5 MOLES  H20  

Hypothesis for candy bar density lab

Need answer ASAP!!!!!

Answers

Goodbar candy bars are the most dense because they contain peanuts, and milk chocolate and dark chocolate candy bars are intermediate and of similar density because they only contain chocolate

Which part of experimental design is most important to a scientist when replicating an experiment?.

Answers

Answer:

A split-plot design lets us replicate our treatments twice using only 24 runs in a single time period, hence it is the most efficient use of resource.

Explanation:

hope this helps

What is a large area of air with the same temperature?.

Answers

Sorry this is late but it would be the air mass

Hope this halpes :))


Which electrode gets heavier in an electrolytic cell?
OA. The electrode where reduction occurs
OB. The electrode that is donating electrons
C. The electrode with the higher reductive potential
OD. The electrode that is being oxidized

Answers

Answer:

The answer is the cathode. This electrode would get heavier in an electrolyte cell. This electrode would have the conventional current leaving then a polarize electrical device. A conventional current would be the one describing the direction where the electronic charges move.

Explanation:

aka... The electrode where reduction occurs.

Answer:

a. the electrode where reduction occurs

Explanation:

What is the molarity of HCl found in a titration where 30 mL of HCl is titrated with 15 mL of 0.1 M NaOH

Answers

The molarity of HCl is found in a titration where 30 mL of HCl is titrated with 15 mL of 0.1 M NaOH is 0.05 M.

What is molarity?

Molarity is the measure of the concentration of any solute per unit volume of the solution.

The reaction is [tex]\rm NaOH(aq)+HCl(aq) \rightarrow H2O(l)+NaCl(aq)[/tex]

The ratio is 1:1

Step1- to calculate the equal moles of HCl

[tex]\dfrac{0.1\;mol\;NaOH}{ L} \times 15\;ml = 1.5\; mmol[/tex]

Step2: Calculate the molar concentration

[tex]\dfrac{1.5 \; m mols\;HCl}{ 30\;ml\;HCl} = 0.05 \;M \;HCl[/tex]

Thus, the molarity of HCl is 0.05 M.

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An increase in blood carbon dioxide content causes hemoglobin to ________. release all bound carbon dioxide molecules bind more oxygen molecules bind more H release more oxygen molecules denature

Answers

An increase in blood carbon dioxide content causes hemoglobin to release more oxygen molecules. Details about hemoglobin can be found below.

What is hemoglobin?

Hemoglobin is the iron-containing substance in red blood cells that transports oxygen from the lungs to the rest of the body.

Hemoglobin consists of a protein (globulin) and heme (a porphyrin ring with an atom of iron at its centre). This justifies its oxygen affinity.

However, excess carbon dioxide in the blood causes blood pH to decrease, resulting in hemoglobin proteins releasing more oxygen molecules.

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Question 3 (1 point)
Electrochemical processes involve redox reactions because electrons are transferred.
O True
O False
Question 4 (1 point)
The activity series of metals helps determine the result of chemical reactions.
O True
O False

Answers

An electrochemical process involves any process that has to do with the transfer of elecrons.

What is an elecrochemical process?

An electrochemical process involves any process that has to do with the transfer of elecrons. These process include redo reactionand electron transport chains.

It is a true statement that the actiivity series helps to detect the products in a reaction because a metal that is lower in the series is always displaced by a metal that is higher in the series.

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Which of the molecules below is propyne? two carbons are double bonded to each other; the pair is single bonded to h above left, below left, and below right, and to c h 3 above right. two carbons are double bonded to each other; the pair is single bonded to c h 3 above left and right, and to h below left and right. an h is single bonded to c, which is triple bonded to another c, which in turn is single bonded to a c with h above and below and yet another c to the right; the final c is bonded to h above, below, and right. an h is single bonded to c, which is triple bonded to another c, which in turn is single bonded to a c which is bonded to h above, below, and right.

Answers

Propyne is is composed of only hydrogen and carbon. It is a hydrocarbon molecule.

What is propyne

The molecule propyne is hydrocarbon. This means that it is composed of only hydrogen and carbon. The molecule contains three carbon atoms and four hydrogen atoms as shown.

The structral formula that corretly reperesents the molecule called propyne is shown in the image attaced to this answer.

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Answer:

C.

Explanation:

_____ are considered dietary proteins.
A. apples
B. oils
C. eggs
D. potatoes

Answers

Answer:

Eggs

Explanation:

Apple = fruit

Oils = fat

Potatoes = Carbs

And eggs are the only proteins

Eggs because they have a lot of protein

Which is not a property of bases Group of answer choices react with metals to produce hydrogen gas react with acids to form a salt and water bitter taste slippery feel

Answers

Answer:

react with metals to produce hydrogen gas

Explanation:

NaOH is a common base and is a strong base. Look what happens with it reacts with a metal:
OH- (aq) + Li(s) --> LiOH. It forms a salt not H2

(I removed spectator ions)

Divers get "the bends" if they come up too fast because the gas in their blood expands, forming bubbles in their blood. If a diver has 5.0 mL of gas in his blood under a pressure of 250. atm then rises instantaneously to a depth where his blood has a pressure of 50.0 atm, what will the volume of gas in his blood be?

Answers

Solve without converting volume into dm³ as it will led into same answer

According to Boyles law

P1V1=P2V25(250)=50V21250=50V_2V_2=25mL

According to Boyle's law, the volume of gas in his blood  will be 25 ml at constant temperature.

What is Boyle's law?

Boyle's law is an experimental gas law which describes how the pressure of the gas decreases as the volume increases. It's statement can be stated as, the absolute pressure which is exerted by a given mass of an ideal gas is inversely proportional to its volume provided temperature and amount of gas remains unchanged.

Mathematically, it can be stated as,

P∝1/V or PV=K. The equation states that the product of of pressure and volume is constant for a given mass of gas and the equation holds true as long as temperature is maintained constant.

According to the equation the unknown pressure and volume of any one gas can be determined if two gases are to be considered.That is,

P₁V₁=P₂V₂

substitution gives V₂=250×5/50=25 ml.

Therefore, the volume of gas in his blood  will be 25 ml at constant temperature.

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In calculating a percent yield, you need a theoretical yield. Where does the theoretical yield come from?

Answers

Answer: Calculated results

Explanation:

Ba(C204) + K(IO3) = Ba(IO3)2 + K2(C2O4)

Answers

Explanation:Reaction Type

Double Displacement (Metathesis)

Net Ionic Equation

Ba(C2O4) + 2K(IO3) = Ba(IO3)2 + K2(C2O4) might be an ionic equation. Calculate the net ionic equation for Ba(C2O4)(s) + 2K(IO3)(aq) = Ba(IO3)2(aq) + K2(C2O4)(aq).

A nearly complete skeleton, ____ is a classic example of a Neanderthal with many defining Neanderthal characteristics. Group of answer choices Taung Child La Ferrassie 1 Piltdown Man KNM-ER 1805

Answers

Answer:  La Ferrassie 1

Explanation: La Ferrassie 1, often referred to as LF1, is a male Neanderthal skeleton estimated to be 70–50,000 years old. It was discovered at the La Ferrassie site in France by Louis Capitan and Denis Peyrony in 1909. The skull is the most complete Neanderthal skull ever found.

What is specific heat capacity?

Answers

Answer:

The energy needed to change the temp of a substance

Explanation:

A balloon is filled with 100.0 Lair at 1.300 atm pressure. what pressure is needed to change the volume to 25.00 L

Answers

Answer:

4 atmospheric pressure is needed to get a volume of 25 litres

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