plss help :(((
What volume is indicated on each of the graduated cylinders below? The unit of volume is mL. Make sure to check the units of graduation to get the most accurate reading possible

Answer:

Density is 2.7 g/ml³

Explanation:

[tex]density = \frac{mass}{volume} \\ [/tex]

mass » 13.5 g

volume » 5 ml³

[tex]density = \frac{13.5}{5} \\ \\ = 2.7 \: {g \: ml}^{ - 3} [/tex]

Answer:

[tex]\boxed {\boxed {\sf 2.7 \ g/mL}}[/tex]

Explanation:

Density is a substance's mass per unit volume. The formula for calculating density is as follows.

[tex]\rho= \frac{m}{v}[/tex]

The mass of the rock is 13.5 grams and the volume of the rock is 5 milliliters.

Substitute these values into the formula.

[tex]\rho= \frac{13.5 \ g}{5 \ mL}[/tex]

Divide.

[tex]\rho= 2.7 \ g/mL[/tex]

The density of the rock is 2.7 grams per milliliter.

Answer:

magnesium chloride: MgCl2

zinc sulphide: ZnS

sodium sulphate: Na2SO4

calcium bicarbonate: Ca(HCO3)2

Answer:

264.7

Explanation:

26470 cm = 264.7 m

just move the decimal over two spaces.

Four covalent bonds are formed as carbon dioxide (CO2) is formed from carbon in Group IVA and oxygen in Group VIA.

The periodic table is composed of eighteen groups and eight periods. The common thread that holds all the elements in a group is that they all have the same number of valence electrons in their atoms. The elements in the same period all have the same highest energy level.

Oxygen in group Group VIA has six valence electrons while carbon in group Group IVA has four valence electrons. Hence, the chemical bond in carbon dioxide CO2 must contain four covalent bonds as shown in the image attached to this answer.

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Answer:

Four Covalent bonds

Explanation:

Answer:

Bases are substances that dissolve in water to release hydroxide ions ... Chalk and oven cleaner are examples of familiar products that contain bases

Answer:

molecular formula = molar mass ÷ empirical formula

n = 142 ÷ 142

n = 1

molecular formula (P2O5)1 = P2O5

Answer:

Explanation:

cant see the screen really

Answer :

a chemical equation in

which the electrolytes in aqueous

solution are expressed as dissociated

ions.

Have good day !!

Answer:

b be a pure substance

Explanation:

Taking into account the definition of physical change and chemical change, the correct option is option b. removing the pulp (solid) from the orange juice using a juice strainer is a physical change.

Two types of changes can be distinguished: physical changes and chemical changes.

A physical change is a change that makes something different without changing the composition of the material.

In other word, a physical change is a transformation in which the nature (composition) of matter does not change, so that the substances involved are the same before and after the change.

On the other hand, chemical changes are considered to be those in which the substances involved are transformed into totally different ones.

In other words, chemical changes refer to the process that involves one or more substances that become new substances with different nature and properties.

In this case, removing the pulp (solid) from the orange juice using a juice strainer is a physical change because the pulp and the orange juice are the same before and after the change and their properties do not change.

In summary, the correct option is option b. a physical change.

Learn more:

Answer:

1s22s22p63s23p64s23d9

Explanatihe neutrlon:

Tell electronic configuration of Copper? ​

Copper is atomic # 29 so it has 29 protons.

The neutralatom must have 29 negative charges to balance the 29

positive charges, so it has 29 electrons.

Our electron configuration must account for all 29 electrons

Look at a Periodic Table

cture from

find copper #29

let us  "AUF-BAU"  ( buld up) the copper electronic configuration from the Periodic Table.copper #29 is in th 4th row.

To "build up", start at row 1.  this is the 1st energy level.  there are noly 2 elements H and He, so it is only an "s" robital. with 2 e's.  so

1s2ve 2 e's in an s orbital and 6 in p orbitals,

at row 2 (energy level 2) we have 2 e's in an s orbital and 6 in p orbitals, so

building on top of row 1, we have

1s22s22p6

at row 3 we repeat and so have

1s22s22p63s23p6

at row 4 we start with 2 e in an s orbital at the 4th energy level, so we

have

1s22s22p63s23p64s2

we now enter the d orbtals, and copper has 9 electrons in the d orbitals.  

but these d orbitals are only slightly at energy level 4.  because of their more complex shape, most of the orbital is in the 3rd energy level, so

we buld up for copper, #29

1s22s22p63s23p64s23d9

count the electrons and add them:

2 + 2 +6 +2 +6 +2 +9 = 29  copper's number

Answer:

A. The product formed have more energy than the reactants.

This is because it is an endothermic reaction.

[tex].[/tex]

Answer:

Large-scale nuclear is fission a rare phenomenon on Earth because

atoms that undergo fission aren't concentrated enough to sustain a chain reaction.

Answer:

Atoms that undergo fission aren't concentrated enough to sustain a chain reaction. For example, the decay chain of U-238 is called the uranium series. ... Uranium is find in ores on Earth with very law mass percentage in it, so fission is not possible

Answer:

four covalent bonds

Explanation:

Answer: four covalent bonds

Explanation:

Answer:  Ga, P,Cl, F

Explanation:  

Cl 1314  kJ/mole

F 1681  kJ/mole

Ga 579  kJ/mole

P 1012  kJ/mole

Answer:

a

Explanation:

everything can be broken down to a smaller less useful compounds but never destroyed

Answer:

Theory.

Explanation:

It is called a theory.

Answer:

Both.

Explanation:

In decomposition, two processes occur. Firstly, because of chemical change the colour of the top layer is transformed. And secondly, due to first reaction it turns into bark and it's a physical change.

So both the changes are the part of decomposition reaction.

The decomposition of the bark of fungi is a chemical change. So the correct option is A.

The word decomposition literally means “to break down”. The process usually relates to the disintegration of the complex organic matter into a simpler inorganic matter. It is a very significant and essential process of the ecosystem.

Hence, decomposition is a metabolic process, performed by living organisms. They take up raw materials in the form of complex compounds, turn process and then convert it into simpler compounds.

Bacteria, fungi, and a few other microorganisms are known as decomposers and they can initiate the process of decomposition. They survive on dead organisms by feeding on them.

The dead and decaying animals and plants are able to serve as raw materials. Upon their breakdown, they produce nutrients, carbon dioxide, water, etc. Dead animals, plants, and their remains are called detritus. This detritus is used by plants and are collectively known as saprophytes.

Therefore, the correct option is A.

Read more about decomposers, here

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#SPJ2

Answer:

sorry but I don't understand Spanish

otherwise I will definitely helps you

I don't understand Spanish but you can do this :)

answer/

1 grams Calcium Phosphate to mol = 0.00322 mol

no. of moles= 0.00322×25

no. of moles = 0.0805

Answer:

A

Explanation:

though an ecosystem can support life forms,when they become over populated or unlimited there will be competition for food,Shelta and other basic necessities which will lead to many of these life forms dying

Answer:

0.75 cm

Explanation:

You will convert 1.07 carat into mg then into g. You will multiply its reciprocal by 3.51g/cm to get the answer.

Answer:

yes it is c=mxb okay

Explanation:

Answer:

gkfbhs DC hdshgagfzh

Answer:

How to Convert a Number to Standard Form

Move the decimal point in your number until there is only one non-zero digit to the left of the decimal point. ...

Count how many places you moved the decimal point. ...

Write your scientific notation number as a x 10b and read it as "a times 10 to the power of b."

Explanation:

Answer:

I don't know

Explanation:

is today your test

Answer:

Hey mate.....

Explanation:

This is ur answer.....

Condensation happens when molecules in a gas cool down. As the molecules lose heat, they lose energy and slow down. They move closer to other gas molecules. Finally these molecules collect together to form a liquid.

Hope it helps!

Brainliest pls!

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Answer:

In PCl5, in addition to equitorial bonds which lie in the same plane ,there are axial bonds. Since it suffers more repulsion it is longer than the other bonds. Also these are weak bondsand therefore these bonds can break easily . Because of these reasons,PCl5 is very reactive.