Please help! Please!!!
Look at the picture down below to answer the question!
>>Select the 2 that apply.
Q: An unsaturated hydrocarbon is represented by which structural formula(s)?
>>Choose two from the picture below that matches with the question above!

Answer:

A. It's the same as the original piece

Explanation:

The piece of matter is the same as that of the original piece.

When the mass of the two new pieces are combined, it the same as the single and whole one.

Mass is the amount of matter contained within a substance.

The proton is a postitive charge, therefore, being 1 (proton) matched to positive. Whilst neutron (2) is matched to neutral. Thus electron (3) is matched to negative.

Answer:

x is horizontal

y is vertical

Explanation:

Answer:

. Name a soluble compound that could be added to precipitate all of the iron ions from the solution.

Sodium Hydroxide.

Answer: Well take this for an example and see if it helps with 50 grams of sucrose

Explanation:

Explanation:

And we have to calculate the number of moles of sucrose present in a  

lb

mass of sucrose:

Moles of sucrose

=

454

⋅

g

342.30

⋅

g

⋅

m

o

l

−

1

=

1.33

⋅

m

o

l

.

Now it is a fact that in a  

mole

of stuff there are  

6.022

×

10

23

individual items of stuff.........

So  

1.33

⋅

m

o

l

×

6.022

×

10

23

⋅

m

o

l

−

1

≅

8

×

10

23

individual

sucrose molecules

Answer:

melting point, hardness, odor, temperature

Answer:

170.4L

Explanation:

The reaction equation is given as:

        N₂  +   3H₂  →    2NH₃  

Mass of NH₃    =  35.5g

Problem:

How many liters of H₂ are needed to produce 35.5g of NH₃  

Solution:

To solve this problem, let us find the number of moles of NH₃;

           Number of moles  = [tex]\frac{mass}{molar mass}[/tex]

Molar mass of NH₃   = 14 + 3(1)  = 17g/mol

 So;

            Number of moles  = [tex]\frac{35.5}{17}[/tex]  = 5.07mole

From the balanced reaction equation:

               2 mole of NH₃   will be produced from 3 mole of H₂  

               5.07mole of NH₃ will produce  [tex]\frac{5.07 x 3}{2}[/tex]   = 7.61mole of H₂

At STP;

       1 mole of gas will occupy 22.4L

     7.61 mole of H₂ will occupy 7.61 x 22.4  = 170.4L

Answer:

inclined plane ; is that device.

ANSWER:

all of them

Explanation:

preciseness is measured by how many decimal places are used not by accuracy. since all of these are to the same decimal place they are all equally precise even if they are inaccurate.

Answer:

ummm the sun isn’t colder in winter actually the sun continues to get hotter every day?

its colder in winter because were roating further away From the sun…

Answer:

6cm^3

Explanation:

240/40=6

6 cm^3

Answer:Fe

Explanation:

Answer:

chemical structure determines the molecular geometry of ca compound by prtraying the arrangement of atoms and chemical bonds in the molecule..

Explanation:

hope this helps any <3

Answer:

Chemical Family means a group of elements in the Periodic Table or, more commonly, compounds that share certain physical and chemical characteristics and have a common name.

A period in the periodic table is a row of chemical elements.

metalloid is an element (e.g. arsenic, antimony, or tin) whose properties are intermediate between those of metals and solid nonmetals or semiconductors.

The empirical formula = the molecular formula = C₁₀H₂₀O

Given

m =  0.15 g menthol

V = 0.0337 L

T = 150 +273 = 423 K

P = 100.2 kPa =0.99 atm

Required

molar mass

The molecular formula

Solution

Ideal gas law :

PV=nRT

n=PV/RT

n=0.99 x 0.0337/0.082 x 423

n=9.6 x 10⁻⁴

n =  mass/Molar mass

Molar mass = mass/n

Molar mass = 0.15/9.6 x 10⁻⁴

Molar mass = 156.25 g/mol

The empirical formula of Menthol : C₁₀H₂₀O

(The empirical formula)n= molecular formula

(C₁₀H₂₀O)n=156.25

(12.011.10+1,007.20+15,999)n=156.25

(156.25)n=156.25

n=1

Answer:

Aluminum

Explanation

The volume of the metal is found by subtracting the final volume by the Intel volume giving 7

And the formula for density is mass divided by volume hence minus 7 by 18.9 giving 2.7

The ability for a substance to flow is fluidity.

Only liquid and gaseous substances have the ability to flow from one point to other as they have weak intermolecular force in it.

Fluidity is the quantity which gives idea about the ability of that substance to flow. At normal conditions at room temperature, any substance has the tendency to distort its shape in order to flow or take the shape of the container it is enclosed in.

Hence the ability for a substance to flow is fluidity.

To know more about fluidity, visit the below link:

https://brainly.in/question/466917

#SPJ2

Answer:

its definitely a physical change as the way you see it now is different then before

Answer:

b

Explanation:

because it changed colors

Answer:

I think B is the answer so hope

Answer:

It's C

Explanation:

Answer:D

Explanation:trust me bro

Answer:

D

Explanation: I took the test

[tex] \huge\sf{ \pink{{\purple{\fbox{ \blue{\fbox{\pink{ANSWER}}}}}}}} [/tex]

[tex]{\huge{\underline{\small{\mathbb{\blue{HOPE\:HELPS\:UH :)}}}}}}[/tex]

Answer:

Explanation:

The number of atoms in a substance can be found by using the formula

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

N = 3.21 × 6.02 × 10²³

We have the final answer as

Hope this helps you

Answer:

The answer is Bicarbonate ions.

Answer:

C. Carbonic base

Explanation:

EDG2021

Answer:

Modern periodic law states that the properties of elements are dependent on their atomic numbers and elements show similar properties at regular interval of increasing atomic number.

3. Ionic Bond .

Reason : The elements from Group I are metals ( they lose electrons )

The elements from Group 17 are non-metals ( they Gain electrons

Answer:

1.2 × 10^22 atoms.

Explanation:

Firstly, cations refers to the positively charged atom in the ionic compound, which is Na+.

Given the mass of NaCl as 1.17g, the number of moles of NaCl can be calculated this:

Molar mass of NaCl = 23 + 35.5

= 58.5g/mol

Mole = mass/molar mass

Mole = 1.17/58.5

Mole = 0.02moles

Using Avagadro's number, 6.022 × 10^23 atoms of Na+ are in 1 mole of NaCl.

In 0.02 moles of NaCl, there are 0.02 × 6.022 × 10^23 of Na+

0.1204 × 10^23 atoms

1.2 × 10^22 atoms of Na+ (cation)

Answer:

Aluminiun

Explanation:

Answer:

the electronic configuration of Li is

=》 2, 1

and in spdf configuration it's 1s^2 2s^1

Answer: [He] 2s1

Explanation:

Electrons per shell: 2,1

Atomic number: 3

Electronegativity: 0.98

Atomic mass: 6.941 u

Discoverer: Johan August Arfwedson

Period: Period 2 element