What group of organic compounds include starch?
a Carbohydrates
b Lipids
Thing
C Proteins
d Nucleic Acids

Answer:

the anwcer on edg 2020 is yes  

HOPE THIS HELPS

Explanation:

[tex]1 \: mol MgSO4 \: has \: 4 \: oxygens[/tex]

Thus ;

[tex]2 \: mols \: of \: should \: have \: 8 \: oxygens[/tex]

So the correct answer is (( 8 مول ))

Answers-in-bold:

There are two common temperature scales. On the Fahrenheit scale, water freezes at 32 degrees. The Celsius scale divides the interval between the freezing and boiling points of water into 100 degrees.

Answer:

Yes it is

Explanation:

calcium chloride  releases heat in an exothermic reaction.

yes.

hope is helps! :)

Answer:

group 5, period 7

Explanation:

The density of a substance can be found by using the formula

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

From the question we have

[tex]density = \frac{85}{110} \\ = 0.772727272...[/tex]

We have the final answer as

The substance will float on water since it's density is less than that of water which is

1 g/cm³.

Hope this helps you

Answer:

A solution is a homogeneous mixture consisting of a solute dissolved into a solvent . ... The solute is the substance that is being dissolved, while the solvent is the dissolving medium. Solutions can be formed with many different types and forms of solutes and solvents.

Answer:

A solution is a homogeneous mixture consisting of a solute dissolved into a solvent .

Explanation:

The mass of unreacted zinc = 13 g

The reaction equation is the chemical formula of reactants and products

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reactants and products

Reaction

[tex]\tt Zn+2HCl\Rightarrow ZnCl_2+H_2[/tex]

mol ratio Zn : HCl = 1 : 2

[tex]\tt mol=V\times M\\\\mol=0.1~L(100~cm^3)\times 2~mol/L\\\\mol=0.2[/tex]

[tex]\tt \dfrac{1}{2}\times 0.2=0.1~mol[/tex]

[tex]\tt 0.1\times 65=6.5~g[/tex]

[tex]\tt 19.5-6.5=\boxed{\bold{13~g}}[/tex]

Answer:

1.5 x 10⁵

Explanation:

Scientific notation always starts in the 1's place (1.)

Answer:

He should use black a light purple brown, tan, blue, and just a tiny bit of pink!

Hope this helps!!

Explanation:

If Johnny wanted to show the brightness of the stars, he should use blue, light blue, yellow, orange, red, and white.

The Milky Way is a huge collection of stars, dust and gas .

Hence , Johnny should use blue, light blue, yellow, orange, red, and white.

Learn more about milky way below

https://brainly.com/question/13956361

#SPJ2

Answer:

He

O

Ge

Sr

Ba

Explanation:

An atom gets larger as the number of electronic shells increase; therefore the radius of atoms increases as you go down a certain group in the periodic table of elements.

In general, the size of an atom will decrease as you move from left to the right of a certain period.

Answer:

before it evaporated into the air, it was on the Earth...and it could have been contaminated/dirtied. There isn't a process during evaporation that cleans water...you have to purify it yourself.

Explanation:

Answer:

9.32×10⁻³

Explanation:

Scientific notation is the way to express the large value in short form.

The number in scientific notation have two parts.

. The digits (decimal point will place after first digit)

× 10 ( the power which put the decimal point where it should be)

How to add the number in scientific notation with same exponent.

7.21 ×10⁻³ + 2.11 ×10⁻³

exponent of both values are same thus we will take it common.

[7.21 + 2.11 ]×10⁻³

9.32×10⁻³

Answer:

what is the question

Explanation:

what do you need help with

Answer:

hi..

Explanation:

The lower mantle is hotter and denser than the upper mantle and transition zone. The lower mantle is much less ductile than the upper mantle and transition zone. Although heat usually correspond s to softening rocks, intense pressure keeps the lower mantle solid. Geologists do not agree about the structure of the lower mantle.

hope this helps ._.

very hot at temperatures, i think i would set it to 43 degrees celsius as its much colder and better

hope this helps!

Answer:

make a new friend if you lose one, Its part of life losing people thats what make us people grow and be more mature.

The work by Mark : 100 J

Work is the transfer of energy caused by the force acting on a moving object  

Work is the product of force with the displacement of objects.  

Can be formulated  

[tex]\tt W=F\times d[/tex]

W = Work, J, Nm  

F = Force, N  

d = distance, m  

Mark is using 5N to push the box 20 m,

F = 5 N

d = 20 m

[tex]\tt W=5\times 20\\\\W=100~J[/tex]

Answer:

GAS .assumes the shape and volume of its container

particles can move past one another    

.compressible

lots of free space between particles

.flows easily

particles can move past one another

LIQUID assumes the shape of the part of the container which it occupies

particles can move/slide past one another

.not easily compressible

little free space between particles

.flows easily

particles can move/slide past one another

SOLID .retains a fixed volume and shape

rigid - particles locked into place

.not easily compressible

little free space between particles

.does not flow easily

rigid - particles cannot move/slide past one another

Answer:

Explanation:

Latent heat of fusion of zinc = 7.322 kJ / mol

molecular weight of zinc = 65 g

450 gram = 450 / 65 = 6.92 mole

Heat required to melt 450 g of zinc = 6.92 x 7.322 kJ

= 50.67 kJ .

= 50.7 kJ .

Answer: 1.04 is the density.                   Explanation: Just like a solid, the density of a liquid equals the mass of the liquid divided by its volume; D = m/v.    52.0/50.0=

Answer:

hope it helps..

Explanation:

Number of protons

More information: The atomic number is used to identify an element, and the atomic number is the number of protons in the nuclei of an element. Every element has its own unique number of protons, and therefore, atomic number.

Number of atoms : 2.245 x 10²⁴

A mole is a number of particles(atoms, molecules, ions)  in a substance

This refers to the atomic total of the 12 gr C-12  which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles  

Can be formulated :

N = n x No

N = number of particles

n = mol

No = 6.02.10²³ = Avogadro's number

n= 3.73 moles

Number of atoms :

[tex]\tt 3.73\times 6.02\times 10^{23}=\boxed{\bold{2.245\times 10^{24}}}[/tex]

Answer:

is force acting in one direction

Answer:

hope this helps!

as described by the third of Newton's law of motion of classical mechanics, offices occurs in pairs such that is one object exerts a force on another object, then the second object exerts an equal and opposite reaction Force on the first.

I think the answer should be titanium, the symbol is Ti.

Answer:

Vertebrate Endocrine Glands and Hormones

Unlike plant hormones, animal hormones are often (though not always) produced in specialized hormone-synthesizing glands (shown below). The hormones are then secreted from the glands into the blood stream, where they are transported throughout the body.

Answer:

graduated cylinder and a scale can be used to measure the volume of a substance. hope this is helpful

Explanation:

Answer:

3.41 x 10^7

Explanation:

Answer: If you think about it, B. would be the most reasonable answer with the given factors.