Can someone please help me. Like right now please

Can Someone Please Help Me. Like Right Now Please

Answers

Answer 1

Answer:

3rd law

Explanation:

when two objects interact, they apply forces to each other of equal magnitude and opposite direction.


Related Questions

Please help!! only right answers!! will mark brainlest.

Answers

Answer:

7.35 *2

Explanation:

Because I mole of Na2o is made of 2 moles of NaOH

please help this is very important​

Answers

Answer:

B

Explanation:

WILL MARK BRAINLIEST

Answers

Answer:

B) inertia

Explanation:

Sorry if wrong

B. Inertia



A- free fall is when an item falls freely

B- when an item remains still, unless it is forced

C- momentum is the quantity of motion of a making body

D- maximum velocity of an object

Hope this helps

Identify the pair in whic 1 the formula does not match the name
sulfite, SO32
nitrite, NO3-
hydroxide, OB
dichromate, C 20-2​

Answers

Answer:

hydroxide is the one because it is the one HAHAH

Answer:

hydroxide, OB

Explanation:

hydroxide,OB

A scientist performs an investigation in which thermal energy is removed from a sample of a substance. When the substance begins to change from a gas to a liquid, the scientist measures the temperature of the substance. This temperature is the substance's

A. melting point
B. freezing point
C. evaporation
D. condensation

Answers

answer is condensation

What does pH measure?
A. the density of a solution
B. the salt concentration of a solution
C. the sulfate ion concentration of a solution
D. the hydronium ion concentration of a solution

Answers

Answer:

Option D

Explanation:

Hydronium ion concentration is a measure of pH of a solution.

The mathematical equation for the same is [H3O+] = 10-pH

OR

[H3O+] = antilog (- pH)

Hence, option D is correct

which of these phenomena cause uneven heating of the earth

Land and water have different heat capacities

Land and water have the same rate of heat absorption

The angle of incoming sunlight varies at different places

Air travels from areas of low pressure to areas of high pressure

Winds blow in the same direction across Earth's Surface

Answers

Answer:

The angle of incoming sunlight varies at different places

Answer: This answer is multiple choices.

1. Land and water have different heat capacities.

And

3. The angle of incoming sunlight varies at different places.

Explanation: I kept seeing other people only putting in one answer, so I used this answer from someone else. Credit to them!

Why does water float on corn syrup

Answers

Answer:

density.

Explanation:

A cubic centimeter of water weighs 1 gram. Since a cubic centimeter of vegetable oil weighs less than 1 gram, oil will float on water. Corn syrup is more dense than water so 1 cubic centimeter of corn syrup weighs more than 1 gram. Therefore, corn syrup sinks in water.

Answer:

Click on the photo to see the full attachment

help with this........

Answers

A, I’m not sure if it’s correct tho

Difference between Displacement and Double Displacement reaction​

Answers

Answer:

please follow me

Explanation:

A displacement reaction is the one when a more reactive substance displaces a less reactive one from its salt solution whereas a double displacement reaction is the one where a mutual exchange of ions happens between two compounds.

Sublimation is snow or ice changing to a gas without melting. What must happen to the molecules for this to happen?

Answers

Answer:Sublimation is the conversion between the solid and the gaseous phases of matter, with no intermediate liquid stage. For those of us interested in the water cycle, sublimation is most often used to describe the process of snow and ice changing into water vapor in the air without first melting into water.

Explanation:

The combustion of ethene,C2H4,is an exothermic reaction. Use the information below to determine the amount of energy given off when 1000g of ethene is conbusted C2H4+3 O2-> 2CO2 + H20

Answers

Answer:

[tex]Q=-50,307kJ[/tex]

Explanation:

Hello there!

In this case, since following reaction:

C2H4+3 O2-> 2CO2 + 2H2O

Has an enthalpy of combustion of ethene is about -1411.1 kJ/mol (can be found on goo gle), it is possible to calculate the total amount of energy that is released when 1000 grams of ethene are burned as shown below:

[tex]Q=-1411.1 \frac{kJ}{molC_2H_4} *\frac{1molC_2H_4}{28.05gC_2H_4}*1000gC_2H_4 \\\\Q=-50,307kJ[/tex]

Best regards!

What does a negative AHf for a molecule mean?
A. Energy was added when the molecule changed phases.
B. Energy was added when the molecule was formed from its
elements.
C. Energy was released when the molecule was formed from its
elements.
O D. Energy was released when the molecule went through a phase
change.
SUBMIT

Answers

Option D I got it right

ANSWER: C (ENERGY WAS RELEASED WHEN THE MOLECULE WAS FORMED FROM ITS ELEMENTS.)

HOPE THE OTHER PERSON IS WRONG!

An equinox occurs when the:

sun is farthest away from the equator
sun is directly over the equator
north pole is tilted away from the sun
south pole is tilted away from the sun

Answers

Answer: sun is directly over the equator

Explanation:

There are only two times of the year when the Earth's axis is tilted neither toward nor away from the sun, resulting in a "nearly" equal amount of daylight and darkness at all latitudes.

calculate the molarity of 0.57 moles NaHCO3 in 61.2 mL of solution. Report your answer 4 places after the decimal don’t forget to round.

Answers

Answer:

The correct response is "9.313 M".

Explanation:

According to the question, the values are:

Moles of solute,

= 0.57 moles

Liters of solution,

=  61.2 mL

or,

= 0.0612 L

Now,

The molarity will be:

= [tex]\frac{Moles \ of \ solute}{Liters \ of \ solution}[/tex]

On putting the given the values in the above formula, we get

= [tex]\frac{0.57}{0.0612}[/tex]

= [tex]9.313 \ M[/tex]

What happens when Sulphuric acid is added into Barium Chloride solution?​

Answers

Answer:

white precipitate of barium chloride is formed

In the combustion of octane, 2 C8H18 +25 O2 --> 16 CO2 + 18 H2O, if 376.0 liters of carbon dioxide formed at STP, then the volume of oxygen used was A. 587.5 L B. 240.6 L C. 839.3 L D. 299.1 L

Answers

Answer:

587.5 L (Option A)

Explanation:

The reaction is:

2 C₈H₁₈ + 25O₂  → 16CO₂  + 18H₂O

We know that in STP conditions 1 mol of any gas is contained in 22.4L

Then, we can make a rule of three, to determine the moles of produced carbon dioxide.

22.4L is the volume for 1 mol

376 L will be the volume for  (376 . 1) 22.4 = 16.78 moles at STP conditions.

Stoichiometry is 16:25.

16 moles of CO₂ are produce by the reaction of 25 moles of O₂

Then, 16.78 moles of CO₂ were produced by (16.78 . 25) /16 = 26.2 moles.

Now, the rule of three again.

1 mol of oxygen gas is contained at 22.4L, at STP conditions

26.2 moles might be contained at (26.2 . 22.4)/1 = 587.5 L

which statement best describes a chemical property related to the particles that make up a material

A. nickel is a good conductor of electricity because the metallic bonds between its atoms allow electrons to move freely.
B. demand is a hard substance because its atoms are joined together by covalent bonds.
C. metallic bonds between its ions cause silver to be a highly malleable material.
D. chlorine is highly reactive with other elements because its atoms have 7 valence eletrons.

Answers

The statement that best describes a chemical property related to the particles that make up a material is A) nickel is a good conductor of electricity because the metallic bonds between its atoms allow electrons to move freely. Option A

Chemical properties describe how substances undergo chemical reactions or interactions with other substances. In this case, the statement about nickel highlights a specific chemical property related to its ability to conduct electricity.

Nickel is a metallic element with a unique atomic structure. It possesses metallic bonds, which involve the sharing of electrons between atoms within a metal lattice. In metallic bonding, the valence electrons of metal atoms are delocalized, meaning they are not strongly associated with any specific atom but are free to move throughout the material.

The presence of these mobile electrons in nickel enables it to conduct electricity effectively. When a potential difference is applied across a conductor like nickel, the mobile electrons can move in response to the electric field, carrying electrical charge from one point to another.

Option B) is incorrect because hardness is a physical property related to the arrangement and bonding of atoms, not a chemical property.

Option C) is also incorrect because malleability is a physical property resulting from the ability of metal atoms to slide past each other when a force is applied, not a chemical property.

Option D) describes the electronic configuration of chlorine, which is a characteristic of its atom but does not directly relate to a chemical property associated with the particles that make up a material.

In summary, option A best describes a chemical property related to the particles that make up a material, specifically nickel's ability to conduct electricity due to the presence of mobile electrons enabled by metallic bonds.

Option A

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which non metal is a good conductor of heat and electricity ?​

Answers

Answer:

Graphite

Graphite is a non-metal and it is the only non-metal that can conduct electricity. You can find non-metals on the right side of the periodic table and graphite is the only non-metal that is a good conductor of electricity.

Answer:

Graphite is a non metal which is a good conductor of heat and electricity .

hope it is helpful to you

61 Cu
29


Write the complete nuclear equations for alpha absorption

Answers

Answer:

⁶¹₂₉Cu + ⁴₂He --->⁶⁵₃₁Ga

Explanation:

Nuclear reactions are reactions which occur with changes in the nucleus of an atom. Nuclear reactions usually occur with the release of large amounts of energy and radiation. Radiactive elements are elements that are involved in nuclearbreactions due to the unstable nature of their nucleus. They disintegrate spontaneously with the emission of radiations. The major types of radiations released during nuclear reactions are;

1, Alpha particles - these are positively charged radiations with strong ionizing power. Each alpha particle is a helium nucleus

2. Beta particles - these are very fast moving stream of electrons. They are negatively charged particles .

3. Gamma radiation - is a form of electromagnetic radiation.

In the alpha absorption of Cu-61, the proton number of the atom increases by 2 while the mass number increases by 4 and the Cu-61 atom is changed to Ga-65 atom. The nuclear equation is given as follows:

⁶¹₂₉Cu + ⁴₂He --->⁶⁵₃₁Ga

why is the volume of hydrogen is doubled the volume of oxygen in electrolysis of water?​

Answers

Explanation:

As you can that water splits into molecules of hydrogen and 1 molecules of oxygen since , number of molecules of hydrogen released is double the number of molecules of oxygen released, volume occupied by hydrogen gas is double the volume occupied by oxygen gas

Which of the following birds is not a second-order prairie consumer?

owl
falcon
eagle
pheasant

Answers

I think it’s a pheasant

What are the products of the following neutralization reaction? (No need to balance)
H2CO3 + NaOH --> ???? ????

A.)H2O + Na2CO3
B.)H30+ + NaCO3
C.)H20 + NaCO3
D.)H30+ + Na2CO3

Answers

H2CO3 + NaOH --> Na2CO3 + H2O

Here salt is Na2CO3.

So, (A) H2O + Na2CO3 is your answer.

What is a covalent compound?


A.a compound with a metal and a nonmetal ion sharing valence electrons
B.stable group of multiple metal nuclei sharing valence electrons
C.a compound with nonmetal ions transferring valence electrons
D.a stable group of more than one type of atom bonded by bonding electron pairs

Answers

A covalent compound is a compound with a metal and a nonmetal ion sharing valence electrons (option A).

What is a covalent compound?

A covalent compound is a molecule formed by covalent bonds, in which the atoms share one or more pairs of valence electrons.

Covalent bond is a type of chemical bond where two atoms are connected to each other by the sharing of two or more electrons.

Chemical compounds are generally grouped into one of two categories as follows;

covalent compounds ionic compounds

Covalent or molecular compounds generally result from two nonmetals reacting with each other. The elements form a compound by sharing electrons, resulting in an electrically neutral molecule.

Examples of covalent compounds are as follows:

watersucroseDNA

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A gas confined in a 515cm3 container exerts a pressure of 107.4kPa at 38.6⁰C. At what Celsius temperature will it exert a pressure of 635.7kPa if it is placed into a 644cm3 container?

Answers

Answer: The temperature at pressure of 635.7 kPa is [tex]2033^0C[/tex]

Explanation:

The combined gas equation is,

[tex]\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}[/tex]

where,

[tex]P_1[/tex] = initial pressure of gas = 107.4 kPa

[tex]P_2[/tex] = final pressure of gas = 635.7 kPa

[tex]V_1[/tex] = initial volume of gas = [tex]515cm^3[/tex]

[tex]V_2[/tex] = final volume of gas = [tex]644cm^3[/tex]

[tex]T_1[/tex] = initial temperature of gas = [tex]38.6^0C=(38.6+273)K=311.6K[/tex]

= final temperature of gas = ?

Now put all the given values in the above equation, we get:

[tex]\frac{107.4\times 515}{311.6}=\frac{635.7\times 644}{T_2}[/tex]

[tex]T_2=2306K=(2306-273)^0C=2033^0C[/tex]

The temperature at pressure of 635.7 kPa is  [tex]2033^0C[/tex]

Which statement describes ionic bonds?
A) a lattice of ions in a sea of electrons.
B) electrostatic attraction between oppositely charged ions.
C) the sharing of electrons between atoms to gain a noble gas configuration.
D) the transfer of electrons from atoms of a non-metal to the atoms of a metal.

Answers

D or A copy of the papers in my

What is the specific heat of silicon if the temperature of a 4.11 g sample of silicon
is increased by 3.8 °C when 11.1 J of heat is added?

Answers

Answer:

The right solution is "0.7107 J/g°C".

Explanation:

The given values are:

Mass,

m = 4.11 g

Temperature,

ΔT = 3.8°C

Heat,

Q = 11.1 J

The specific heat of silicon will be:

⇒  [tex]C=\frac{Q}{m \Delta T}[/tex]

On substituting the values, we get

⇒      [tex]=\frac{11.1}{4.11\times 3.8}[/tex]

⇒      [tex]=\frac{11.1}{15.618}[/tex]

⇒      [tex]=0.7107 \ J/g^{\circ}C[/tex]


Which elements have two electron shells?
Helium
Lithium
Done
B
Boron
Calcium
Oxygen
Lead
Nitrogen
Keep going

Answers

Answer:

Helium (He)

Lithium (Li)

Beryllium (Be)

Boron (B)

Explanation:

The chemical elements which have two (2) electron shells are: Lithium and Boron.

Valence electrons can be defined as the number of electrons present in the outermost electron shell of an atom. Thus, valence electrons is typically used to determine whether or not an atom or group of chemical elements found in a periodic table can form a chemical bond with others.

This ultimately implies that, valency is a property that is typically used in determining the chemical properties of chemical elements.  

An electron shell can be defined as the outermost shell of an atom around the atomic nucleus. Thus, it is considered to be an orbit accompanied by electrons around the nucleus of an atom.

In Chemistry, the chemical elements which have two (2) electron shells are:

Lithium: it has two electrons in its first shell and one electron in its second shell. Boron: it has two electrons in its first shell and three electrons in its second shell.

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does adding acid make a solution more acidic or basic

Answers

Answer:

Adding an acid increases the concentration of H3O+ ions in the solution. Adding a base decreases the concentration of H3O+ ions in the solution. An acid and a base are like chemical opposites. If a base is added to an acidic solution, the solution becomes less acidic and moves toward the middle of the pH scale.

How do you determine if an equation is balanced or unbalanced.

Answers

You have to look at the number of each element on each side and see if they are equal.
For example in the following equation:
N2 + H2 = NH3
If you compare the Nitrogen’s, you see that on the left side you have 2 and on the right you only have one, so you would need to balance this equation.
An example of when you don’t need to balance:
K + H2 -> KH2
In this example, you can see that there is only one potassium (k) on each side. Now, you compare the hydrogens. We can see that there are two hydrogens on both sides. Since both sides have the same of each element, we do not need to balance this equation.
IN SHORT, balance if there are different numbers of one or more elements on both sides. Don’t balance if there are the same amount of each element on both sides.
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