Question 25 (2 points) ✓ Saved
Consider these three compounds.
I
II
H
III
H
1
H-C-H
H-C-H
ннннн
! ! ! ! !
H-Ċ-Ċ-Ċ-Ċ-Ċ-H
II 1
Η Η Η Η Η
H H
1
1
H-C-C-C-H
HHH
H HH
1
H-C-C-C-C-H
I 1
Η Η Η Η
Which are isomers?

Answer:

Don't know if the answer is correct or not.

There will be 24 atoms of hydrogen

Explanation:

for H2O there is 2 atoms

Therefore:

12×2=24

163 lb * 1 kg / 2.205 lb * 15.0 mg/kg = 1108.8 mg or about 1.11 g

Answer:

rise to an imbalance in Earth's energy budget

Explanation:

Increased atmospheric greenhouse gas concentrations give rise to an imbalance in Earth's energy budget by initially reducing the amount of emitted thermal infra-red radiation. The result of this imbalance is an accumulation of excess energy in the Earth system over time.

Answer:

Increased atmospheric greenhouse gas concentrations give rise to an imbalance in Earth's energy budget by initially reducing the amount of emitted thermal infra-red radiation. The result of this imbalance is an accumulation of excess energy in the Earth system over time.

Explanation:

hope it helps you

Answer:

39.99g/mol

Explanation:

Na = 22

O= 16

H = 1

= 40g or 39.99g/mol

Answer: 39.99g/mol

Explanation:

right

Answer:

no

Explanation:

The key difference between atomic mass and average atomic mass is that the atomic mass is the mass of an atom, whereas the average atomic mass is the mass of an atom of a particular chemical element calculated by considering isotopes of that element.

Yes, the chemical reaction occurs because new substance is formed and heat energy is released.

Chemical reaction is a process in which one or more substances i.e. the reactants, are converted to one or more different substances i.e. the products so we can conclude that the chemical reaction occurs because new substance is formed and heat energy is released.

Learn more about chemical reaction here: https://brainly.com/question/11231920

Answer:

The density of beryllium is 1.85 g/cm³. Thus given metal is beryllium.

Explanation:

Given data:

Mass of metal = 37 g

Volume of metal = 20cm³

Which metal is this = ?

Solution:

We will solve this problem by using density formula. After finding density we will check from literature which metal has a density similar to our calculated density.

d = m/v

d = 37 g/ 20cm³

d = 1.85 g/cm³

The density of beryllium is 1.85 g/cm³. Thus given metal is beryllium.

Answer:

D

Explanation:

This creates a gap that we call an oceanic trench

:)

Answer:

The concentration of KOH solution is 17.009 moles/litre or 17.009M .

Explanation:

Here , the given reaction is -

[tex]2KOH +H_{2}SO_{4}$\rightarrow$K_{2}SO_{4}+2H_{2}O[/tex]

 2moles of KOH requires 1mole for complete neutralisation.

Therefore ,

2 x number of moles of KOH = 1 x number of moles of [tex]H_{2}SO_{4}[/tex]

2 x (molarity of KOH x volume of KOH) = (Molarity of [tex]H_{2}SO_{4}[/tex] x volume of

[tex]H_{2}SO_{4}[/tex])

1 mole of [tex]OH^- $\rightarrow$[/tex] 1mole of [tex]H^+[/tex]

Molarity (KOH) = concentration (c)

volume (KOH) =15.05ML

Molarity ([tex]H_{2}SO_{4}[/tex] ) = 5.0 M

Volume of ( [tex]H_{2}SO_{4}[/tex] ) = 25.6ML

[tex]\frac{1\times(C \times15.05ml)}{OH^-} = \frac{(2\times 25.6 \times 5)}{H^+}[/tex]

C = [tex]\frac{0.2\times25.6\times5}{15.05}[/tex]

C= 17.009 moles/litre

Hence , the concentration of KOH solution is 17.009 M or moles/litre .

Answer:

Explanation:

Molar weight of HCl is 36.46g/mole

The reaction requires 0.73 g of HCl so it requires

0.73/36.46 = 0.02 mole of HCl

Molarity of HCl is 4.0M = 4mole/liter

0.02/4 = 0.005L = 5mL

5 mL of HCl solution should be used.

Answer:

33%

Explanation:

Since there is only 1 particle for each element in the molecule, 100/ by 3 is 33.

Answer:

latent

Explanation: its latent.

Answer:

latent

Explanation:

Answer:

Acids

Explanation:

i tested it and it is acids. hope this helps :)

Answer:

0.027mole

Explanation:

Answer:

The given  metal is beryllium.

Explanation:

Given data:

Mass of metal = 74 g

Volume of metal = 40 cm³

Which metal is this = ?

Solution:

First of all we will calculate the density.

it is mass divided by volume.

d = m/v

d = 74 g/40 cm³

d = 1.85 g/cm³

In literature it is given that the density of beryllium is 1.85 g/cm³. Thus given  metal is beryllium.

Answer:

750 ml

Explanation:

Given parameters:

Number of students in the class = 15

Volume of solution needed per student  = 50ml

Unknown:

Volume of solution needed for the whole class = ?

Solution:

 The total volume needed for the class;

         = number of students x volume of solution per student

         = 15 x 50

          = 750ml

The volume of solution needed by the teacher for the whole class is 750mL

metallic characteristics:

lustrous

solid at room temperature

in-between characteristics:

amphoteric

semiconducting

nonmetallic:

brittle

Explanation:

i took the instruction got then right :)

The metallic characteristics are lustrous, solid at room temperature

The in-between characteristics are amphoteric and semiconducting.

The nonmetallic characteristics is brittle.

The elements whose properties are intermediate of metals and non-metals is called metalloid.

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By definition

The electronegativity of an element is defined as the relative ability of an atom to attract electrons from another atom to chemically bond and form a compound.

In other words, electronegativity is a measure of the attractive force that one atom exerts on the electrons of another when a chemical bond forms.

The polarity of a chemical bond occurs when there is an asymmetric distribution of the electron cloud of the bond around the two atoms that form said bond. This happens when both atoms have different electronegativity.

This is, the polarity of a bond is determined by the difference in electronegativity between the atoms that form it.

If the atoms forming the bond have very similar electronegativities, the bond is nonpolar.

On the contrary, if the difference in electronegativity is appreciable, the bond is polar and the electrons are not shared in a balanced way, creating electric dipoles.

There are molecules whose bonds are polar and yet the molecules are nonpolar due to their geometry. This causes the dipole moments of the individual bonds to be canceled and, globally, the molecule will be apolar.

That is, the different dipole moments cancel each other out.

In summary, its is possible for a molecule to have a polar bond but have an overall polarity of nonpolar.​

Learn more about polarity:

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Answer:

C

Explanation:

I PROMISE you its right :D

Answer:

1. Atmosphere ⇒ Ocean ⇒ Marine Plants ⇒ Sediments ⇒ Natural Gas .

2. Atmosphere ⇒ Land Plants ⇒ Natural Gas.

Explanation:

Hello,

In this case, it is widely known there are two ways in which natural gas is formed:

1. Atmosphere ⇒ Ocean ⇒ Marine Plants ⇒ Sediments ⇒ Natural Gas .

In this one, the carbon dioxide in the atmosphere, is able to get through the ocean and in touch with marine plants which have the capacity to undergo photosynthesis and yield sugars which are subsequently fixated in the soil as sediments containing fossil fuels, coal and/or natural gas.

2. Atmosphere ⇒ Land Plants ⇒ Natural Gas.

In this one, the carbon dioxido also in the atmosphere is captured by the land plants which use it to undergo photosynthesis and subsequently fix it into the underground as fossil fuels, coal and/or natural gas as well.

Best regards.

Natural gas occurs naturally in the atmosphere and includes various forms of gases. Natural gases are formed from the atmosphere through the ocean or land.

The carbon cycle is the pathway of the formation and its flow in the different spheres of the planet.

The first pathway of the natural gas formation is explained as:

The natural gas or the carbon dioxide from the air or the atmosphere moves towards the ocean and marine plants that use them in the photosynthesis that laters get fixed as sediments in the ocean beds.

The second pathway of the natural gas formation is explained as:

The carbon dioxide from the air moves towards the land and is captured by the plants to use as reactants in process of photosynthesis. The carbon captured by the plant is fixed as fossils in the underground soil.

Therefore, natural gas can be formed by land and oceanic plants.

Learn more about natural gas here:

https://brainly.com/question/21634981

Answer:

[tex]2HNO_2(aq)+Ca(OH)_2(aq)\rightarrow H_2O(l)+Ca(NO_2)_2(aq)[/tex]

Explanation:

Hello.

In this case, considering that the reaction between nitrous acid and calcium hydroxide yield both water and calcium nitrite as a neutralization chemical reaction:

[tex]HNO_2(aq)+Ca(OH)_2(aq)\rightarrow H_2O(l)+Ca(NO_2)_2(aq)[/tex]

As it is not balanced due to the two nitrites at the right, we obtain:

[tex]2HNO_2(aq)+Ca(OH)_2(aq)\rightarrow H_2O(l)+Ca(NO_2)_2(aq)[/tex]

Which means that 2 before the nitrous acid balance both nitrogen and oxygen.

Regards.

hello ; i don't understand your answer Explanation:

Answer:

[tex]\huge\boxed{\sf 6x}[/tex]

Explanation:

[tex]\sf x+ 2x + 3x\\\\Take\ x\ common\\\\x(1+2+3)\\\\x(6)\\\\\bold{6x}\\\\ \rule[225]{225}{2}[/tex]

Hope this helped!

Answer: Sodium

Explanation: The sodium has only one electron at the outer layer.

Hope this helps! :)

Answer:

Explanation:

The reaction that is described goes as follows:

2AgCl + Mg(OH)2 ---> MgCl2 + 2AgOH

The precipitate here is the MgCl2 salt.

I hope it helped!

Answer:

I believe your answer would be Perio

Explanation:

Answer:

Periods :)

Explanation:

I dont know if thats what youre asking but thats what theyre called, there isnt another name

Answer:

FeO

Explanation:

The balanced reaction equation is

MnO−4(aq)+5Fe2+(aq)→ Mn2+(aq)+5Fe3+(aq)

Number of moles of KMnO4 reacted = 0.01621 M × 42.17/1000 = 6.84 × 10^-4 moles

Since

1 mole of MnO4^- reacted with 5 moles of Fe^2+

6.84 × 10^-4 moles of MnO4 will react with 6.84 × 10^-4 moles × 5 = 34.2 × 10^-4 moles of Fe^2+

Mass of Fe^2+ reacted = 34.2 × 10^-4 moles of Fe^2+ × 56gmol-1 = 0.192 g of Fe

Hence % of iron in the sample = 0.192/0.2729 × 100 = 70.4%

% of oxygen = (0.2729 -0.192)/0.2729 × 100 = 29.6%

Empirical formula of the compound is obtained by

70.4/56, 29.6/16

1.257, 1.85

Divide through by the lowest ratio

1.257/1.257, 1.85/1.257

1, 1

Hence the empirical formula is FeO

Answer:

0.20 moles is used

Explanation:

molarity =given wt / gm mw ×1000/v(ml)

Explanation:

I hope you benefit

this is the correct coefficient...

Answer:

the answer is a A

Explanation:

Answer:

Compare

Explanation: