What is the volume of a box that has a length of 5 cm a width of 7 cm and a height of 9 cm

Answers

Answer 1

Answer:

V = L × w × h

V = 5 × 7 × 9

V = 315 cm³


Related Questions

What do we call the (+) ion in an ionic bond? *
O Cation
O Anion
O Metalloid
O Covalent

Answers

Answer:

cation

Explanation:

a cation is an ion with a postitive charge. This (cat)ion (+) = cats are good , anion (onion) are not good (-)

as distance from nucleus increases , energy of shells decreases, correct the wrong statement​

Answers

as distance from nucleus increases , energy of shells also increases

Which are examples of harmful mutations? Check all that apply. One that causes a person to have a light patch of hair color one that changes a mouse's eye shape but not its eyesight O one that allows a moth to blend into its environment one that reduces a bean plant's ability to make food one that increases the plants susceptibility to disease

Answers

Answer:

one that reduces a bean plant's ability to make food

one that increases the plants susceptibility to disease

Explanation:

Genetic mutation refers to the changes in the arrangement of the bases that make up a gene. This sudden change may have positive or negative consequences for the individual specie.

Some genetic mutations actually alter a gene's sequence of bases but do not alter the function of the particular protein that the gene in question makes.

The two options chosen in the answer shows situations in which a genetic mutation causes harm to the organism involved.

Answer:

2, 4, and 5

Explanation:

after the nutrients are extracted, where does the food go, waiting to be expelled?

Answers

Answer:

Nutrients advance through the alimentary canal to the stomach and small intestine, and waste materials continue from the small intestine to the colon (large intestine) and anus.

Explanation:

It's how many atoms are in two water molecules (H2O)?

Answers

Answer:

The chemical formula for water is H2O which means that every molecule of water has 2 atoms of hydrogen (H) and one atom of oxygen (O). Here comes the key part. From the Periodic Table of Elements, one sees that one mole of hydrogen atoms weighs 1 gram while one mole of oxygen atoms weighs 16 grams.

Explanation:

:)

The number of atoms present in two water molecules is 6 atoms. 4 hydrogen atoms and 2 oxygen atoms.

What are atoms?

Atoms are the basic unit of a substance. An atom is made of a nucleus, protons, neutrons and electrons. Different atoms combines to form a molecule and molecules combines to form compounds.

Water has the formulas H₂O, thus one molecule of water contains 2 hydrogen and one oxygen. Therefore, two molecules of water that is (H₂O)₂ have 4 hydrogen and 2 oxygens thus, a total of 6 atoms.

Hence, the number of atoms present in two molecules of water is 6.

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Can somebody please help me with this ASAP!

Answers

What is the problem talking about can you explain it
If you put the elements and the amount under both the products and reactants it can really help!

What is the role of gravity in the solar system?

Answers

Answer:

Explanation:

Gravity is what holds the planets in orbit around the sun and what keeps the moon in orbit around Earth. ... Gravity creates stars and planets by pulling together the material from which they are made. Gravity not only pulls on mass but also on light.

WILL GIVE 5 STAR RATING AND BRAINLIEST IF YOU ANSWER FIRST AND CORRECTLY

What are the total number of elements in C₄H₉OH ?

Answers

Theres three elements i'm assuming. C (carbon), H (hydrogen), O is Oxygen.

what would you expect to see if a piece of copper metal is placed in a solution that contains nickel(II) ions?
A. copper atoms become copper(II) ions
b. nickel ions become solid nickel
c. no reaction happens
d. a precipitate forms that contains copper and nickel ions​

Answers

Answer:

c. no reaction happens

Explanation:

Let me take your mind back to the idea of electrode potentials of metals. Remember that the more negative the electrode potential of a metal, the more reducing the metal is. Metals with more negative electrode potentials displace metals with less negative electrode potentials from their aqueous solutions.

The electrode potential of nickel is -0.25 V while that of copper is +0.34 V. Hence, copper is lower than nickel in the activity series and can not displace it from aqueous solution.

This implies that, if a piece of copper metal is placed in a solution that contains nickel(II) ions, no reaction happens .

the advantage of asexual reproduction is.
a. There are no genetic mutations
b. reproduction doesn't require a mate
c. increase genetic variation ​

Answers

b. reproduction doesn’t require mate

Answer:

1.) Genetic Variation, 2.) reproduction doesn't require a mate.

Explanation:

These are the only two that actually make sense in the blanks, So trust me or trust the other two answers.Your choice.

Repeat this calculation using Slater's rules to estimate the screening constant, S, and calculate Zeff for these two ions. Express your answers using two decimal places. Enter your answers numerically separated by a comma. 50 A 6 A 0 21 ? S. Zeff C, Zeff K+ =

Answers

Answer:

Cl^- = 5.75

K^+ = 7.75

Explanation:

Now let us calculate the effective nuclear charge four K^+ and Cl^- from Slater's rule.

Given that Cl^- and K^+ has electronic configuration of; [Ne] 3s2 3p6 (they are isoelectronic species)

We compute S as follows;

For n - 2 level, S= 1

For n - 1 level, S= 0.85

For ns,np level S= 0.35

Note: S= screening or shielding constant

1s2, S=2 ×1 = 2

2s2 2p6, S= 8×0.85 = 6.8

3s2 3p6, S= 7 × 0.35 = 2.45

The electron under study is not considered hence seven out of eight electrons in the shell are considered

Hence

S= 2 + 6.8 + 2.45 = 11.25

Since Cl^- has 17 electrons;

Zeff(Cl^-) = 17 - 11.25 = 5.75

For K^+

Zeff = 19 - 11.25 = 7.75

The expression of the speed of light can be written as: (C =

Answers

Answer:

The expression of speed of light can be written as "c".

Explanation:

The speed of light is denoted by c. It is originated from the Latin word celeritas which means "speed".  Its value is 3×10⁸ m/s.

It is related to the frequency and wavelength as follow,

Speed of light = wavelength × frequency

c = λ × f

λ = c/f

This formula shows that both frequency ad wavelength are inversely related to each other.

Frequency is taken in Hz.

It is the number of oscillations, wave of light make in one second.

Wavelength is designated as "λ" and it is the measured in meter. It is the distance between the two crust of two trough.

NH3 is a _______________

Answers

Answer:

compound

Explanation:

Answer:

your answer would be compound

during chemical reaction do atoms change into a new substance
true or false

Answers

Answer:

t

Explanation:

because for atoms to change they have to have some kind of chemical action to get new life

True


Because of chemical action
Hope it helped you

pls help me with this question

Answers

Answer:

I think its a and c

Explanation:

im smrt

the second question is d. density!

hope this helps ;)

anwser this ASAP please

Answers

Answer:

Its D :)

Or not i haven't done this in a while-

If we know the force of an object in Newtons) and we know how fast the object accelerates in ms"), then we can easily find the mass of the object by
dividing the _ by the _

Answers

Answer:

If we know the force of an object in Newtons) and we know how fast the object accelerates in ms"), then we can easily find the mass of the object by

dividing the force by the mass

PLS HELP!! ASAP!! 10 POINTS!!

From Dalton's atomic theory, a few parts were disproven over the course of years of experiments. Which part was modified by the discovery of subatomic particles?

That matter is made of atoms.
If the same elements are in a two different compounds, their ratio will always be the smallest whole number ratio for that compound.
That atoms cannot be divided.
That all atoms of an element are exactly the same

Answers

The indivisibility of an atom was proved wrong: an atom can be further subdivided into protons, neutrons and electrons. ... According to Dalton, the atoms of same element are similar in all respects. However, atoms of some elements vary in their masses and densities. These atoms of different masses are called isotopes.

Match each description below with the name of the local wind system being described. warm, dry downslope wind affecting Southern California monsoon wind blowing from a valley up a mountain slope valley breeze a seasonally changing wind Santa Ana wind generated by cold thunderstorm downdrafts haboob

Answers

Answer:

warm, dry downslope wind affecting Southern California - Santa Ana wind

a seasonally changing wind- monsoon

wind blowing from a valley up a mountain slope - valley breeze

generated by cold thunderstorm downdrafts - haboob

Explanation:

The Santa Ana wind occurs in early autumn. They bring hot and dry weather to areas around the South-West coast. They move at high speeds, affecting most parts of Southern California.

Monsoon is a seasonal wind that blows across Southern Asia. It usually blows in summer. It is a a seasonally changing wind.

Valley breeze is an example of convection current in nature. It is produced by rapid warming of the valley floor leading to the expansion of air making it to flow up the slopes. At night, radiation from the surface cools the slopes. This leads to the rise of cooler and denser air which drains into the valley.

Haboob is generated by cold thunderstorm downdrafts. It is associated with large sandstorms and dust storms.

I will give you brainliest

Answers

Answer:

Plumbing System

Explanation:

Answer:

C plumbing system

Explanation:

Infrastructure is the basic structures needed for the operation of society

Select the correct answer from each drop-down menu.

Why do some transition metals have multiple oxidation states?

Transition metals have multiple oxidation states because of their (a. completely filled b. partially filled c. empty) (s, p, d, or f) sublevel.

Answers

Answer:

because of energy difference between (n1)d and ns orbitals (sub levels) and involvement of both orbital in bond formation

Explaination:

the reason is that there is a difference in energy of orbitals of an atom of transition metal, so there (n1)d orbitals and there ns orbitals both make a bond and for this purpose they lose an electron that is why both sublevels shows different oxidation state.  

Hope this helped you

Transition metals have multiple oxidation states because of their partially filled orbitals . Thus option b is correct.

What are transition metals?

Transition metals are defined as essentially, a configuration attended by reactants during complex formation, as well as the reaction coordinates.

It can also be defined as a very short-lived atomic configuration at a reaction-energy diagram's local energy maximum.

Transition metals are best defined as an element with a partially filled d sub-shell on its atom or that can give rise to cations with an incomplete d sub-shell.

Transition state is defined as a chemical reaction is defined as a certain configuration along the reaction coordinate.

Oxidation state is defined as the total number of electrons that have been deleted or added to an element.

It can also be defined as an atom's charge if all of its links to other atoms were entirely ionic.

Thus, transition metals have multiple oxidation states because of their partially filled orbitals . Thus option b is correct.

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Crystallisation is a separation technique used to separate____ solids from a liquid solvent.

Answers

Answer:

separate soluble solids from liquid

Explanation:

A in Chemistry

Crystallization is a separation technique used to separate solute solids from a liquid solvent.

What is Crystallization?

Crystallization is the process of disuniting or separating two substances or molecules that are mixed, and are of different forms of matter. Such as solid and liquid. The process separates mixtures by three processes. These processes are freezing, precipitation, and deposition.

It is the main process of separating solid from liquid. In this process, the solute came above the liquid in crystal form and this is called precipitation.  

Freezing separates the substance that has a different freezing point.  By deposition, the substance that is solid and called solute is deposited below the liquid in the container.    

                                                                                                                                 

Thus, crystallization separates the solute solids from a liquid solvent.

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⚠️⚠️ period and group PLEAAE CHECK OUT THE QUESTIONNS IMAGE ⚠️⚠️

Answers

Answer:

group 5, period 7

1. Define λmax and explain why it is desirable to do the experimental procedure at λmax? 2. Around what absorbance would you expect the λmax to be with each color solution? (Blue, green, red, yellow) 3. A pipet is used to make the solution dilutions in lab. Suppose in making the dilution, additional distilled water is accidentally added. Will the concentration of the solution be higher or lower that disered? Explain.

Answers

Answer:If you help me with the triple beam balance gizmo then i can do this for you

Explanation:please i need help

The periodic table is a(n) _________________________________ system for the elements.

Answers

Answer:

Sabihin mo

Explanation:

salamat shoppe

What is the activation energy of a reaction?

Answers

Answer:

The activation energy for the forward reaction is the amount of free energy that must be added to go from the energy level of the reactants to the energy level of the transition state. ... Once a reactant molecule absorbs enough energy to reach the transition state, it can proceed through the remainder of the reaction.

Explanation:

Answer: Activation energy is how much energy it takes for a reaction to occur.

Explanation:

A chemist must prepare of aqueous copper(II) sulfate working solution. He'll do this by pouring out some aqueous copper(II) sulfate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in of the copper(II) sulfate stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits.

Answers

Answer:

380 mL

Explanation:

A chemist must prepare 925 mL of 325 mM aqueous copper(II) sulfate working solution. He'll do this by pouring out some 0.792 M aqueous copper(II) sulfate stock solution into a graduated cylinder and diluting it with distilled water. Calculate the volume in mL of the copper(II) sulfate stock solution that the chemist should pour out. Be sure your answer has the correct number of significant digits.

Step 1: Given data

Initial concentration (C₁): 0.792 MInitial volume (V₁): ?Final concentration (C₂): 325 mMFinal volume (V₂): 925 mL

Step 2: Convert "C₂" to M

We will use the conversion factor 1 M = 1000 mM.

325 mM × (1 M/1000 mM) = 0.325 M

Step 3: Calculate the inital volume

We will use the dilution rule.

C₁ × V₁ = C₂ × V₂

V₁ = C₂ × V₂/C₁

V₁ = 0.325 M × 925 mL/0.792 M

V₁ = 380 mL

PLEASE HELP 30 POINTS
Because the rock is irregularly shaped, you used the displacement method to measure its volume.
You used (______) to indirectly find the (_____) of the objects.

Options for the 1st fill in the blank:
- a balance
- calculations
- a graduated cylinder
Options for the 2nd fill in the blank:
- density
- mass
- area

Answers

Answer:

balance for the 1st and mass for the 2nd

Two chemicals A and B are combined to form a chemical C. The rate, or velocity, of the reaction is proportional to the product of the instantaneous amounts of A and B not converted to chemical C. Initially, there are 100 grams of A and 50 grams of B, and for each gram of B, 2 grams of A is used. It is observed that 10 grams of C is formed in 7 minutes. How much is formed in 28 minutes? (Round your answer to one decimal place.) grams What is the limiting amount of C after a long time? grams How much of chemicals A and B remains after a long time? A grams B grams At what time is chemical C half-formed? t = min

Answers

Answer:

Follows are the solution:

Explanation:

A + B = C

Its response decreases over time as well as consumption of a reactants.  

r = -kAB

during response A convert into 2x while B convert into x to form 3x of C

let's  y = C

y = 3x

Still not converted sum of reaction  

for A: 100 - 2x

for B: 50 - x

Shift of x over time  

[tex]\frac{dx}{dt} = \frac{-k(100 - 2x)}{(50 - x)}[/tex]

Integration of x as regards t  

[tex]\frac{1}{[(100 - 2x)(50 - x)]} dx = -k dt\\\\\frac{1}{2[(50 - x)(50 - x)]} dx = -k dt\\\\\ integral\ \frac{1}{2[(50 - x)^2]} dx =\ integral [-k ] \ dt\\\\\frac{-1}{[100-2x]} = -kt + D \\\\[/tex]

D is the constant of integration

initial conditions: t = 0, x = 0

[tex]\frac{-1}{[100-2x]} = -kt + D \\\\\frac{ -1}{[100]} = 0 + D\\\\D= \frac{-1}{100}\\\\[/tex]

hence we get:

[tex]\frac{-1}{[100-2x]}= -kt -\frac{1}{100}\\\\or \\\\ \frac{1}{(100-2x)} = kt + \frac{1}{100}[/tex]

after t = 7 minutes , [tex]C = 10 \ g = 3x[/tex]

[tex]3x = 10\\\\x = \frac{10}{3}[/tex]

Insert the above value x into [tex]\frac{1}{(100-2x)}[/tex] equation [tex]= kt + \frac{1}{100}[/tex] to get k.  

[tex]\to \frac{1}{(100-2\times \frac{10}{3})} = k \times (7) + \frac{1}{100} \\\\ \to \frac{1}{(100- 2 \times 3.33)} = \frac{700k + 1}{100} \\\\ \to \frac{1}{(100-6.66)} = \frac{700k + 1}{100}\\\\ \to \frac{1}{93.34} = \frac{700k + 1}{100} \\\\[/tex]

[tex]\to 100 = 93.34(700k + 1) \\\\ \to 100 = 65,338k + 700 \\\\ \to 65,338k = -600 \\\\ \to k = \frac{-600}{ 65,338} \\\\ \to k= - 0.0091[/tex]

therefore plugging in the equation the above value of k  

[tex]\to \frac{1}{(100-2x)} = kt +\frac{1}{100} \\\\\to \frac{1}{(100-2x)} = -0.0091t + \frac{1}{100}\\\\\to \frac{1}{(100-2x)} = \frac{1 -0.91t}{100}\\\\\to \frac{1}{2(50-x)} = \frac{1 -0.91t}{100}\\\\\to \frac{1}{(50-x)} = \frac{1 -0.91t}{50}\\\\\to 50= (1-0.91t)(50-x)\\\\\to 50 = 50-45.5t-x-0.91tx\\\\\to x+0.91xt= -45.5t\\\\\to x(1+0.91t)= -45.5t\\\\\to x=\frac{-45.5t}{1+0.91t}[/tex]

Let y = C

, calculate C:

y = 3x

[tex]y =3 \times \frac{-45.5t}{1+0.91t}[/tex]

amount of C formed in 28 mins

[tex]x = \frac{-45.5t}{1+0.91t} ,[/tex] plug t = 28

[tex]\to x = \frac{-1274}{1+25.48} \\\\\to x = \frac{-1274}{26.48} \\\\\to x= -48.26[/tex]

therefore amount of C formed in 28 minutes is = 3x = 144.78 grams

C: [tex]y =3 \times \frac{-45.5t}{1+0.91t}[/tex]

y= 136.5 =137

A neutral atom of an element has three energy levels and two valence electrons. Which element in the periodic table does this describe?​

Answers

Answer:

I think it is Lithium...

Explanation:

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