what are the useful of carbon monoxide?​

Answer:

please clear ur ques with image

it's unable to be understood

...

Answer:

chemical reaction between those a b c it's a reaction which occurs when heating

Answer:

Explanation:

Two sig digits means that 5239 becomes 52 with some zeros behind it. How many?

There were 2 numbers after the 2. So two sig digits would become 5200

If the third digit from the left is a 5 or more then the answer would be

5300.

Answer:

2.764 °C

Explanation:

ΔT = 2 x 1.86 C/m x 0.743m = 2.764C That means the freezing point of the solution is 2.764C less than the pure solvent (water)

Answer:

The right option is (c) toaster

Answer:

[tex]\boxed {\boxed {\sf B. \ 0.5 \ M}}[/tex]

Explanation:

Molarity is a measure of concentration in moles per liter. The formula for calculating molarity is:

[tex]molarity= \frac{moles \ of \ solute}{ liters \ of \ solution}[/tex]

There are 2 moles of a compound or the solute. There are 4 liters of water or the solution.

Substitute the values into the formula.

[tex]molarity = \frac{ 2 \ mol}{ 4 \ L}[/tex]

Divide.

[tex]molarity= 0.5 \ mol /L[/tex]

1 mole per liter is equal to 1 Molar, so the solution's molarity of 0.5 mol/L is equal to 0.5 M.

[tex]molarity = 0.5 \ M[/tex]

The molarity of the solution is 0.5 Molar and choice B is correct.

Answer:

HCl is a polar covalent compound, because of electronegativity difference between Cl(3.5) and hydrogen (2). Hence in this way, the bond between HCl breaks and they formed ions in the polar solvent like water .

Answer:

Explanation:

25 yard [3 feet / 1 yard] [12 inches / 1 foot] = 25 * 3 * 12 = 900 inches in 25 yards.

Always put the unit you are going to on top and the unit you are coming from on the bottom.

So in this example, you want to going to feet to start with. That's on top. Yards are on the bottom of the first bracket.  In second bracket feet are on the bottom, inches are what you are going to on the top.

Answer:

A.

Electron pairs in the valence shell of an atom have a tendency to attract other nearby electron pairs.

Answer:

true is your answer

Explanation:

hope it helps

Answer:

It is C. -1

Explanation:

[tex] { \underline{ \sf{ \blue{christ \: † \: alone}}}}[/tex]

Answer:

B. decreases

Explanation:

The solubility of gases in a liquid is inversely proportional to the temperature, it means that if you increase the temperature, the solubility decreases.

Answer:

The answer is below

Explanation:

A) The method of  extracting essential oils from aromatic plants is important however, the process of distillation is the main method for extracting the aromatic parts of plants.

B) The condenser fan plays an important role on circulating the air across the coil to facilitate heat transfer. The condenser refrigerant and pumps it to a coil in the form of a hot gas.

1 meter = 1000 km

2500 meter = 2500/1000 km

= 2.5 km

Answer:

b. stainless steel

Explanation:

b) stainless steel is not good condoctor of heat

Answer:

32.4°C

Explanation:

Consider the following expression:

P•V/T =P'•V'/T'

Where P and P' are respectively the initial and the final pressure, V and V's are respectively initial and final volume, and T and T' are respectively initial and final temperature.

We know that the pressure cannot change, so it means that P = P'

We also know that the volume must be increased in 20%, and if we multiply the volume by 1.2 is like increase it in 20%, so we can write that V' = 1.2•V, and changing a little more we can write that V'/V = 1.2

So let's do some maths:

P•V/T = P'•V'/T'

T'•P•V/T = P'•V'

T'•P•V = P'•V'•T

T'=P'•V'•T/P•V

We know that P'=P so the division is equal to 1:

T'= 1•V'•T/V

We also know that V'/V = 1.2, so:

T' = 1.2•T

And we know the value of T, it's 27, so now we just have to solve it:

T' = 1.2•27

T' = 32.4°C

Oxygen gas O2 is a compound, a molecule and a pure substance.

Oxygen gas is a compound because it contains more than one atom( two oxygen atoms) that are chemically combined together.

Oxygen gas is a molecule because it can exist independently as a unit and the oxygen atoms are covalently bound.

It is a pure substance because it contains only oxygen molecules.

Learn more: https://brainly.com/question/19922822

Answer:

Atomic number ---> number of protons in the nucleus of an atom

Atomic mass ----> the total mass of protons, neutrons, and electrons in an atom

6.94 is much more closet to 7.016, so Li 7 is more abundant

Answer:

a reactant is a substance that is at the beginning of a Chemical reaction while a product is a substance that is present at the end of a chemical reaction.in other words a reactant is a substance used up in a chemical reaction to produce something while a reactant is what is produced after a chemical reaction.

I hope this helps

In achemical reaction when two or more substances combine or interact; they are known as reactants.

Products are the substances formed after a chemical reaction.

Answer:

Abiotic factors are the non-living components of the ecosystem, including its chemical and physical factors.

Hope this helps.

Answer:

Abiotic factors of ecoystem are non-living creatures present on ecosystem.

Answer:

chemistry - the science that studies the properties of substances and natural fenomens .

...........

Answer:

The Basic definition of Chemistry is:-

Chemistry is the scientific study of the properties and behavior of matter. It is the natural science that covers the elements that make up matter to the compounds that is composed of atoms, molecules and ions.

Answer:

sodium chloride

hope that helped :)

Answer:

Chlorine is a greenish yellow gas at room temperature and atmospheric pressure. ... yielding chlorine water, and from this solution a solid hydrate of ideal ...

Answer:

Age. ...

Residency. ...

Residence and Physical Presence.

Good Moral Character.

Attachment to the Constitution.

Language.

U.S. Government and History Knowledge.

Oath of Allegiance.

These are some requirements for obtaining citizenship .

Answer:

53.9541 pound force...

The pots and other articles made from clay hardened by heat is called ceramics..

HOPE IT'S HELPFUL FOR U MATE!!!!

Answer:

crucial premise in the study of illness behavior is that illness, as well as the illness experience, are shaped by psychological, social, and cultural factors irrespective of the genetic, physiological, or other biological bases of disease. Hence, as used here, illness and disease are distinct.

Answer:

The polar nature of water splits the acid molecules into its cations and anions. Cations and anions are charged particles and are free to move inside the aqueous medium. As a result when a potential difference has applied the solution to conduct electricity.

Explanation:

hope it helps