which of these gaseous elements is least reactive hydrogen helium nitrogen or oxygen

Answers

Answer 1

Answer: Nobel gases

i dont know what the options were but i hope that helped


Related Questions

wsphorus-SL 3. In the isotope B-11, what does the 11 represent?​

Answers

Answer:

Here boron-11 means the name of the element is boron and the mass number is 11

Explanation:

formulas and nomenclature binary ionic compounds worksheet

Answers

To name the binary ionic compounds it is necessary to observe which is the metal and the non-metal that compose them.

This name is made as follows:

The name of the metal is shown.The name of the non-metal is presented in abbreviated form.Add the suffix "ide" at the end.

An example of this can be seen in the binary ionic composite KCL that receives the name Potassium Chloride, since potassium is the metal and chlorine is the non-metal.

It is important to remember that binary ion compounds are electrically charged ionic molecules formed by a metal and not a non-metal.

You can find more information about ionic bonds at the link below:

https://brainly.com/question/24500453

distinguizh between the 4 states ofmatter

Answers

Answer:

There are four natural states of matter: Solids, liquids, gases and plasma. ... Solids have a definite shape, as well as mass and volume, and do not conform to the shape of the container in which they are placed. Solids also have a high density, meaning that the particles are tightly packed together.

Explanation:

hope this helps! goodluck & enjoy the rest of ur day or night.

Elements join together to form_____.

Answers

Answer:

compounds

Explanation:

The angle formed by the nuclei of two surrounding atoms with the nucleus of the central atom in a structure is called a(n) ________angle. The value predicted for such an angle using the VSEPR theory would be 180 degrees, based upon geometry alone. This is referred to as the___________ bond angle. In practice, this value often deviates from the predicted value for various reasons.

Answers

The bond angle obtained based on the geometry of the molecule alone is known as the predicted bond angle.

When a compound is formed, the less electronegative atom in the compound is called the central atom in the molecule. The angle formed by the nuclei of two surrounding atoms with the nucleus of the central atom in a structure is called a bond angle.

The bond angle is usually based on the geometry of the molecule. The expected geometry can be deviated for certain reasons such as the presence of lone pairs on the central atom in the molecule. The bond angle obtained based on the geometry of the molecule alone is known as the predicted bond angle.

Learn more about bond angle: https://brainly.com/question/6179102

a volume of .5650 will exert

Answers

Answer: A volume of .5650 what? And what unit will be considered?

Please help need to turn in

Answers

Answer:

2. d

3. i

4. e

5. j

6. g

7. a

8. f

9. b

Explanation:

do a few searches when you have time to deepen understanding!

5. j
6. g
4. e
9. b
2. d
7. a
10. h
1. c
3. f

the empirical formula for trichloroisocyanuric acid

Answers

Answer:

OCNCl

Explanation:

The empirical formula for trichloroisocyanuric acid, the active ingredient in many household bleaches, is OCNCl. The molar mass of this compound is 232.41g/mol.

Calculate the number of moles in 1.622 grams of boron.

Answers

Answer:

0.147

Explanation:

Moles equals mass over AR/MR so 1.662 over 11 gives 0.147

When magnesium (Mg) metal is burned in the presence of oxygen (O2), magnesium oxide (MgO) is produced. The properties of magnesium oxide are different than the individual properties of magnesium and oxygen because magnesium oxide is a compound and cannot be separated __________.

Answers

Answer:

a compound

Explanation:

why do the copper square, penny, and the statue of Liberty all soluble in water?

Answers

Answer:

It’s because of the green substance on the copper square, pennies and the Statue of Liberty giving those objects the ability to all be soluble in water.

what element has 12 protons 12 neutrons and 11 electrons

Answers

Answer:

sodium atom

Explanation:

Part 1: Name the type of chemical reaction that occurs when magnesium chloride
solution (MgCl2) reacts with sodium carbonate solution (Na2CO3).
Part 2: Explain why aluminum (AI) would react with copper chloride (CuCl2) but not with
magnesium chloride (MgCl2).

Answers

Mg is ahead of Al in the electrochemical series and more reactive than Al hence Al does not react with MgCl2.

A chemical reaction is said to have occurred when new substances are formed. The reaction between magnesium chloride  solution and sodium carbonate solution is a double decomposition reaction since the cations exchange anion partners in the product;

MgCl2(aq) + Na2CO3(aq) ------> MgCO3(s) + 2NaCl(aq)

We must note that a single replacement reaction depends on the relative positions of metals in the electrochemical series. Al can react with CuCl2 because Al is more reactive than copper and ahead of Cu in the electrochemical series. On the other hand, Mg is ahead of Al in the electrochemical series and more reactive than Al hence Al does not react with MgCl2.

Lear more about electrochemical series: https://brainly.com/question/25749323

Why is acetic acid called weak acid?​

Answers

Answer:

because...it is not strong enough proton donor to be entirely converted to hydronium ions in aqueous solution...

Explanation:

lemme know whether that was helpful!

Which of the following is the strongest covalent bond?

Single bond
Double bond
Triple bond
Hydrogen bond

Answers

Answer:

Triple bond is the strongest bond

Triple bonds are stronger than the equivalent single bonds or double bonds, with a bond order of three.

Answer:

single bond.

In a single covalent bond, when the electrons are shared between two s orbitals, the resulting bond is a sigma (σ) bond . Sigma bonds are the strongest covalent chemical bonds....!!

A mechanical pencil is 14 cm long. What is its length in mm?

Answers

Answer:

140mm................

which colour would you expect ekasilicon to be

Answers

Answer:

it would ether be gray to black or silver to gray and black

Explanation:

because of my calculation ekasillicon would be that color because of the eyes and because of your color seeing .

Name the 4 properties of waves.

Answers

Answer:

the 4 properties of waves are frequency, amplitude, wavelength, and speed.

Explanation:

Frequency Amplitude Wavelength and Speed

A protozoan gains shelter as it lives in the intestine of a termites, helping the termite to be able to digest the wood that it eats. This symbiotic relationship between the termite and protozoan is known as:

Answers

Answer:

The ecological relationship between termites and the wood-digesting protozoans that live in their gut is an example of  mutualism. Thank you for posting your question here at brainly. I hope the answer will help you.

what sea animals have moveable spines that they use for protection

Answers

Answer:

sea urchins

Explanation:

Answer:

sea urchins

Explanation:

i took the test

Reactions cannot occur without a certain minimum amount of energy. What is this minimum amount of energy called?
the activation energy
the activated complex
the kinetic energy of reactants
the potential energy of products

Answers

Hello!!
It should be
“the activation energy”

1) How many moles of hydrogen gas can be produced if 0.57 moles of hydrochloric
acid, HCl, reacts with excess solid zinc according to the following chemical
equation?
2 HCl + Zn → Hz + ZnCl2

Answers

Answer: 0.28 mol H2

Explanation:

0.57mol HCl         1mol H2          

                             2mol Hcl

Hydrochloric acid and zinc show the displacement reaction to produce hydrogen gas and zinc chloride. 0.57 moles of hydrochloric acid and excess zinc react to produce 0.28 mol H₂.

What is a displacement reaction?

A displacement reaction is the removal of one of the elements from the reactant with highly active species of the reactivity species to produce the products. It can be a single or double displacement reaction.

The balanced chemical displacement reaction is given as:

2 HCl + Zn → H₂ + ZnCl₂

Here, two hydrochloric acids react with zinc to form one mole of hydrogen gas and one mole of zinc chloride.

Given,

Hydrochloric acid = 0.57 moles

Using proportions to calculate moles as:

If 2 moles of HCl = 1 mole H₂

Then, 0.57 moles = X moles

X = 0.57 ÷ 2

= 0.28 mol H₂

Therefore, 0.57 mole HCl produces 0.28 moles of hydrogen gas.

Learn more about displacement reaction, here:

https://brainly.com/question/13219117

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Nivel de energia maximo de 20Ca

Answers

Por favor provide más información

determine the bond type (NP, Polar, Ionic)

Answers

Answer:

a. NP

b. NP

c. Polar

d. Ionic

e. Polar

Explanation:

The way I did it was using the electronegativity of the elements mentioned and subtracted the pairs. For non polar the difference is 0-0.4, for polar it’s 0.4-2.0, for ionic it’s >2.0. I included the chart I used to find the electonegativity for the elements below.

B: 2.04, P: 2.19, difference is 0.15, so NP

Be: 1.57, Si: 1.9, difference is 0.33, so NP

C: 2.55, Na: 0.93, difference is 1.62, so Polar

Li: 0.98, O: 3.44, difference is 2.46, so Ionic

Mg: 1.31, N: 3.04, difference is 1.73, so Polar

If you really want I can explain why electronegativity affects the types of bonds, just comment below

Answer:

Polar is the correct answer

Explanation:

#CarryOnLearning

Elements that are usually dull, brittle and do not conduct electricity are know as______.


Points: 46

Answers

Answer:

nonmetal

Explanation:

.........

...

.

A student dissolves ethanol (C2H5OH) in distilled water. In another container, he dissolves CaCl2, in distilled water. Will either of the solutions conduct electricity? If so which one?

Plz Help!

Answers

Answer: The CaCl2 solution will conduct electricity.

Answer:

i think that the  CaCl2 solution will conduct electricity

Explanation:

im not sure but if im wrong im sorry

What was the first person who invented a light bulb

Answers

Answer:

Thomas edison would be you're asnwer

Answer: The person who invented the light bulb was Thomas Edison

Explanation:

Mr. Green gave his students a set of items.


They had a toothpick, pencil, paper clip, safety pin, nail, and dime. He also gave them a magnet. He told them to predict which items are magnetic.

How can they test their predictions?
A.
weigh each of the items
B.
see which items stick to the pencil
C.
measure each of the items
D.
see which items stick to the magnet

Answers

Answer:

D. see which items stick to the magnet

Explanation:

To predict which items are magnetic, the students will have to test whether or not each item is attracted to the magnet. Only objects that are magnetic stick to a magnet, so all of the items that stick to the magnet should be magnetic.

Hopefully that's helpful! :)

A 0.03 mol sample of NH4NO3 (s) is placed in a 1 L evacuated flask, which is then sealed and heated. The NH4NO3 (s) decomposes completely according to the balanced equation above. The total pressure in the flask measured at 400 K is closest to which of the following? (The value of the gas constant, R, is 0.082 L atm mol-1 K-1.)
a. 3 atm
b. 1 atm
c. 0.5 atm
d. 0.1 atm
e. 0.03 atm

Answers

The total pressure in the flask measured at 400 K is 1 atm

The correct answer to the question is Option B. 1 atm

From the question given above, the following data were obtained:

Number of mole (n) = 0.03 mole Volume (V) = 1 L Temperature (T) = 400 KGas constant (R) = 0.082 atm.L/Kmol Pressure (P) =?

Using the ideal gas equation, we can obtain the pressure in the flask as follow:

PV = nRT

P × 1 = 0.03 × 0.082 × 400

P = 1 atm

Therefore, the total pressure in the flask measured at 400 K is 1 atm

Learn more on ideal gas equation: https://brainly.com/question/4147359

Answer: a: 3 atm

Explanation:

0.03 mol NH4NO3 decomposes into 0.09 mol of gas total, thus we multiply 0.09 by 0.082 and 400K to get our answer of about 3 atm.

Microscopes are used to see tiny organisms. The specimen is thin kept on the grid in this microscope, and can be magnified more than a million times and can be viewed in the monitor. Name the Microscope

Answers

Answer:

The electron microscope is the answer.

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