A hot metal plate at 150°C has been placed in air at room temperature. Which event would most likely take place over the next few minutes? Molecules in both the metal and the surrounding air will start moving at lower speeds. Molecules in both the metal and the surrounding air will start moving at higher speeds. The air molecules that are surrounding the metal will slow down, and the molecules in the metal will speed up. The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.

Answers

Answer 1

Answer:

last option is correct.

Air molecules surrounding the metal will speed up and metal molecules will slow down

Explanation:

the metal cools when placed in room temperature air which causes surrounding air to heat up.

the speed of molecules slow down for any material which cools and molecules speed increases when any material heats up


Related Questions

Radhika loves to eat sweets and chocolates. She asks her mother for the same before and after every meal. Explain if this is an example of bad eating habit or healthy eating habit?

Answers

Answer: Radhika loves to eat sweets and chocolates. She asks her mother for the same before and after every meal. This is an example of bad eating habit.

Explanation:

Both sweets and chocolates contain high amount of fat and sugar. When Radhika is eating the same before and after every meal then it means she is consuming it in excess.

When we eat too much of sweets and chocolates then its remains get deposited in between our tooth and when they remain over there for hours then more amount of bacteria is formed.

Due to this bacteria our tooth starts to decay.

Hence, it is advised even by the doctors to eat sweets and chocolates occasionally and not regularly.  

Thus, we can conclude that Radhika loves to eat sweets and chocolates. She asks her mother for the same before and after every meal. This is an example of bad eating habit.

23. What type of chemical reaction is: CH, + 0→ CO2 + H20
a. Combustion
b. Neutralization
C. Synthesis
d. Double Replacement

Answers

Answer:

combustion

Explanation:

bsnszisb idiej jeiieyv

the answer is combustion

What happens to the intensity of light emitted from stars the further away the star is from us?

Answers

Answer: stars vary in their effective temperature and colour. A hot star radiates more energy per second per metre surface area than a cooler star. Does this then mean that a hot star is going to appear brighter to us than a cooler one? The answer to this actually depends on a few factors

Explanation: pa brainiest po

list 8 functions of petroleum​

Answers

Petroleum is used as a fuel to power vehicles and machines.

Petroleum products include fuel oils for heating and electricity generation.

It is a feedstocks for making the chemicals and plastics.

We use petroleum to produce electricity.

The part of an atom that has an overall positive charge is called
A)
an electron
B)
the nucleus
C)
the first shell
D)
the valence shell

Answers

Answer: I think it’s B

How many grams of Al will be deposited from molten AlCl3 by a current of 15.0 amp flowing for 24.0 hr ( 1 Faraday = 96500 C)

0.538 g
0.0335 g
363 g
121 g​

Answers

Answer:

121 aprox.

Explanation:

mass/molar mass = Q/CF

where mass=?

molar mass of Al=27

Q=It = 15×24×60×60

C=3

F=96500

The melting and boiling points of table salt and table sugar are given below.

Why does table salt have much higher melting and boiling point than table sugar?
o A strong ion -ion attractions in table salt
O B. weak ion-ion attractions in table sugar
O C. strong ion-ion attractions in table sugar
O
D. weak ion-ion attractions in table salt

Answers

Answer:

weak ion attractions in the table salt

It is a C I took the quiz

Question 12 of 15
Matter can undergo chemical reactions and nuclear reactions. Which
statement is true for both types of reactions?
A. The reactants are changed to form the products.
B. The reactants can be elements or compounds.
C. The products can be elements or compounds.
D. The products can be the same as the reactants.

Answers

Answer:

A. The reactants are changed to form the products.

Explanation:

Chemical reactions are reactions that involves a change in the chemical composition of substances involved while a nuclear reaction is the process of fusing together or splitting the nucleus of an atom. According to this question, matter is said to undergo both types of reaction.

However, one similarity in both chemical and nuclear reactions is that substances called REACTANTS are changed to form PRODUCTS. In nuclear reaction, the atoms joined or split are the reactants while the ones formed are the products.

Answer: A

Explanation:

¿Cuál de los siguientes valores es igual a 1 micrómetro?
O 0,000001 metro
O 0,001 metros
O 1.000 metros
O 1.000.000 metros

Answers

La respuesta es : 0,000001 metro.

*
5. Gravitational potential energy is found in
(1 Point)
a rubber band pulled back ready to be shot
an apple falling from a tree branch
a boy on a skate board gliding up a ramp
a book held high over a desk

Answers

Answer:

A book held high over a desk

Explanation:

Gravitational potential energy, or GPE, is like height energy. The higher up an object is placed, the more GPE it has. Gravitational potential energy is the potential of a certain mass relative to another due to gravity. In this case you have a book held high over a desk and therefore since it's higher up it's going to have more potential energy due to gravity, which is why it has gravitational potential energy. Therefore your answer is "a book held high over a desk".

Chloe’s teacher gives her and her lab partner soil samples from different parts of the city: the park, the area next to a pond, the school, and a neighborhood. Chloe’s teacher also gives her a soil tester kit, which determines the pH of the soil. Chloe and her lab partner need to determine the pH of each soil sample and then compare them.
Fill in the blank with the word that best completes the statement.

This investigation is a(an)______investigation.

Answers

Answer:

an

Explanation:

It is AN because investigation starts with I ( i is a vowel). When there are vowels we use An.

Pls mark me brainliest!

Explain why rubbing an alkali like bicarbonate of soda onto an acidic bee sting can ease the pain ?

Answers

Because when a bee stings a person it injects an acidic liquid into the skin which causes the pain/irritation, applying baking soda can help neutralize the acidity of the sting easing inflammation

How many molecules of water vapor participate in the above reaction if 90 g of water vapor are available?

Answers

Answer:

can I see the reaction plz before I answer the question

a sample of silver has a volume of 6 cm^3 and a massage of 36 grams what's the samples density​

Answers

Answer:

6g/cm³

Explanation:

Density of a substance can be calculated as follows:

Density = mass (g)/volume (cm³)

According to this question, a sample of silver has a volume of 6 cm³ and a mass of of 36g. The density will be

Density = 36/6

Density = 6g/cm³​

The pH at the equivalence point in any titration is the pH of the salt solution formed. At the equivalence point of the titration, the solution contains sodium benzoate and water. The passage states that benzoic acid is a weak acid; therefore, its conjugate base, the benzoate anion, is a stronger base than OH- and reacts with water to produce OH- and undissociated benzoic acid. The resulting solution then has a pH > 7, because of the hydroxide ions produced by this reaction. The reaction of an ion such as benzoate ion with water is called hydrolysis.
A. < 4

B. > 4 and < 7

C. = 7

D. > 7

Answers

Answer:

D. > 7

Explanation:

Benzoic acid, HX, is a weak acid that reacts with OH- as follows:

HX + OH- → X- + H2O

Where X- is produced, the conjugate base of benzoic acid.

As benzoic acid is a weak acid, benzoate ion is a strong base. A strong base has pH > 7. Right option is:

D. > 7

an archaeologist discovers an ancient wooden bowl. which isotope would most likely be used to determine its age?

a. carbon-12
b. carbon-14
c. uranium-238
d. oxygen-16

please and thank you to anyone who may know the answer.​

Answers

Answer:

B

Explanation:

Which row represents an ion?
number of
protons
number of
neutrons
number of
electrons
А
1
0
1
B
3
4
3
C С
6
6
6
D
11
12
10​

Answers

Answer:

12123456789012347698

You are given 3 unknown solutions with pH value as 6, 8 & 9.5 respectively. Which solution will contain maximum OH ion

Answers

The answer is 9.5 one as it is more basic so it contains more OH ion
Hope it helps : )

What is the molarity if 60.4 grams of hydrochloric acid was added to 505 mL of water?
M
H - 1.0079 g/mol
Cl- 35.453 g/mol

Answers

Answer:

3.29 M

Explanation:

Molarity refers to the molar concentration of a solution and it can be calculated using the formula below:

Molarity (M) = number of moles (n) ÷ volume (V)

According to this question, the mass of HCl was given to be 60.4 grams and the volume of water as 505 mL.

Using mole = mass/molar mass to convert mass of HCl to moles

Molar mass of HCl = 1.0079 + 35.453 = 36.4609g/mol

mole = 60.4g ÷ 36.4609g/mol

mole = 1.66mol

Volume of water = 505mL = 505/1000 = 0.505L

Molarity, M = 1.66 ÷ 0.505

Molarity of HCl solution = 3.29 M

What has the most direct cause to the increase in the number and ferocity (strength) of storms hitting the Caribbean and the United States in recent years?

Answers

Answer:

High amount of humidity

Explanation:

This is especially common in the Caribbean, where hot temperatures very moisture and warm air provide near-ideal circumstances for hurricane formation, as assessed by the Saffir-Simpson classification and the Power Distribution Index.

"Hurricanes may originate everywhere in the Atlantic basin, from the subtropical central Atlantic to the Gulf coast. However, in order to make this all the way to the West Coast of the United States, the storms must pass over a lengthy length of sea water which is far too small to support hurricanes.

The storm strength is influenced by a lot of factors. Due to world warms and increase in the amount of humidity.

What is causing the increase in storm strength?

Studies has shown due too the warming of the world, hurricanes and other tropical cyclones are said to be more stronger.

This is due to the fact that warmer water gives more of the energy that boast storms. A rise in stronger hurricanes is due to warming never ending.

Learn more about storm strength from

https://brainly.com/question/25775340


Geef de systematische namen van SiF2

Answers

The question is: Give the systematic name of [tex]SiF_{2}[/tex].

Answer: The systematic name of [tex]SiF_{2}[/tex] is silicon difluoride.

Explanation:

The given compound has chemical formula [tex]SiF_{2}[/tex]. It shows that there is one atom of silicon and two atoms of fluorine are present.

So, the number "two" will be represented by the prefix "di" while naming this compound.

Hence, systematic name of this compound is silicon difluoride.

Thus, we can conclude that systematic name of [tex]SiF_{2}[/tex] is silicon difluoride.

Based on the enthalpy changes given for the reactions, which reactions are endothermic?

Answers

Explanation:

yan po sana makatulong

pa brainliest na din po thanks

Valence electrons are important when drawing molecular structures because
a. They are closest to the nucleus of the atom and do not participate in chemical
bonding
b. They are closest to the nucleus of the atom and participate in chemical
bonding
c. They are farthest away from the nucleus of the atom and do not participate in
chemical bonding
d. They are farthest away from the nucleus of the atom and participate in
chemical bonding

Answers

Answer:

d

Explanation:

Valence electrons are in the outermost shell. They form chemical bonds with other elements, not any other electrons. Hope this helps!

A gas occupies 25.3 at pressure of 790.5 mmHg. Determine the volume if the pressure is reduced to 8.04 mmHg

Answers

Answer:

2487.51.

Explanation:

As per Boyle's law temperature remaining constant the volume of an ideal gas is inversely proportional to its pressure.

pV= k

therefore, p1V1 = p2V2

here V1 = 25.3, p2 = 8.04mm Hg

pressure p1 = 790.5 mm Hg

this means that

25.3×790.5 = 8.04V2

⇒V2= 2487.51

Hence, the required volume is, 2487.51.

Identify which statement is true about "Elements and Compounds" 1 A. Individual elements join together and constitute a compound B. Compounds have same type of atoms C. Chemical symbols represent Compounds D. Elements can be broken down into smaller substances

Answers

Answer: The Correct option is A.

Individual elements join together and constitute a compound

Explanation:

This is because Elements refer to a substance that contain a single atom.

Element is a single entity.

Compound is a substance that consist of two or more elements which are chemically join together. Elements make up a compound.

_ As + _ NaOH → _Na3ASO3 + __ H2

Answers

Answer:

2As + 6NaOH =2Na3AsO3 +3H2

Explanation:

2As + 6e- = 2As³ ,this is an oxidation reaction

6H¹ +6e- =6H⁰ ,this is reduction process

the above reaction exhibit a redox redox reaction As acts as a reducing agent while NaOH acts as an oxidizing agent.

A neutron collides with a nitrogen atom, resulting in a transmutation. Balance the equation.
on + '
NX+1H
Identify the unknown product by identifying the unknown letters.
Ais
Z is
X is

Answers

Answer:

The answer is ¹³₆C

Explanation:

searched it up

Which greenhouse gas is produced when fossil fuels are burned for energy?
A. Petroleum
B. Methylamine
C. Helium
D. Carbon dioxide

Answers

D Carbon dioxide it is a green house gas

Answer:

D. Carbon Dioxide

Select the statement that is most correct regarding chemical bonds. A. multiple bonds between two atoms are not possible with covalent bonding B. hydrogen bonds are very weak and can only occur when polar covalent bonds are present C. Ionic bonds involve the sharing of electrons D. Covalent bonds involve the transfer of one or more electrons from one atom to another

Answers

Answer:

hydrogen bonds are very weak and can only occur when polar covalent bonds are present

Explanation:

Hydrogen bonds are weak intermolecular interactions that occur when hydrogen is covalently bonded to a highly electronegative atom.

Owing to the difference in electro negativity between hydrogen and the highly electronegative atom, the bond is a polar covalent bond.

This hydrogen bond is a weak bond but accounts for properties such as high melting and boiling points of small molecules such as water and ammonia.

A3B8 + C2 ---> AC2 +

B2C

1. What is the balanced equation for the combustion reaction?

Answers

Answer:

A₃B₈ + 5C₂ –> 3AC₂ + 4B₂C

Explanation:

A₃B₈ + C₂ –> AC₂ + B₂C

The equation can be balance as illustrated below:

A₃B₈ + C₂ –> AC₂ + B₂C

There are 3 atoms of A on the left side and 1 atom on the right side. It can be balance by writing 3 before AC₂ as shown below:

A₃B₈ + C₂ –> 3AC₂ + B₂C

There are 8 atoms of B on the left side and 2 atoms on the right side. It can be balance by writing 4 before B₂C as shown below:

A₃B₈ + C₂ –> 3AC₂ + 4B₂C

There are 2 atoms of C on the left side and a total of 10 atoms on the right side. It can be balance by writing 5 before C₂ as shown below:

A₃B₈ + 5C₂ –> 3AC₂ + 4B₂C

Now, the equation is balanced.

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