How does calcium and potassium react differently with water and why

Answers

Answer 1

Answer: calcium with water:
When a metal reacts with water( cold water or hot water) then the products formed are metal hydroxide and hydrogen gas.

Metal + steam --------> Metal hydroxide + Hydrogen

Calcium reacts with cold water to form calcium hydroxide and hydrogen gas:

potassium with water.

Potassium reacts violently with cold water to form potassium hydroxide and hydrogen gas:

2K(s)+ 2H2O(l) --------> 2KOH(aq) + H2(g) + heat.
In this reaction so much heat is produced get hydrogen gas formed catches fire and burns explosively.

Related Questions

The bright-red color of highway safety flares comes from strontium ions in salts such as Sr(NO3)2 and SrCO3. Burning a flare produces strontium ions in excited states, which then emit red photons at 606 nm and several wavelengths between 636 and 688 nm. Calculate the energy (in Joules per mole) of the 649 nm emission.
_____ are a type of organic compound.a. Chlorides b. Carbonates c. Hydrocarbons d. Nitrous oxides
The law of conservation of mass states that mass is neither created nor destroyed during a chemical reaction. This can be gleaned from the third postulate in Dalton's series. Magnesium oxide decomposes into magnesium and oxygen. If 16.12 g of magnesium oxide decomposes to form 9.72 g of magnesium, what mass of oxygen gas is also released in the reaction?
What is Aqua Auras mineral family/class?
What is the work done when a volume increases from 3 litersto 5 liters at 6 atm of pressure? (Conversion factor: 1 L atm = 100))

How are sound energy and light energy similar?A.
They are both carried from place to place by particles.
B.
They are both kinds of mechanical energy.
C.
They both need a medium to travel through.
D.
They both have a wavelength and a frequency.
Explanation

Answers

HOPE THIS WILL HELP U

D. They both take the form of a wave and have frequency :)

Which belief is the basis of Ptolemy's geocentric model of the solar system?

Answers

Answer:

"Earth-centered," or "geocentric" Ptolemy thought that all celestial objects — including the planets, Sun, Moon, and stars — orbited Earth. Earth, in the center of the universe, did not move at all.

Explanation:

Answer:

Geocentric

Explanation:

Its the belief that earth was the center of the solar system instead of the sun

Which type of bond will form between two chlorine atoms?

Answers

The link between the same atom is always non-polar Covalent.Is Covalent because there is no possibility of an atom donating electrons to the other, since they are equal and need the same number of electrons, and is why the formal charge non-polar (electronegativity) of two atoms is equal. When there is no difference of formal charges (dipole moment) between the atoms, the connection is always apolar.

hope this helps!

1. Use the chemical equation of Photosynthesis to answer the following prompts.Answer in complete sentences.
6CO2 + 6H2O --> C6H12O6 +602
1. Identify evidence that a chemical reaction has occurred.
2. What element is the most abundant in this chemical reaction?
3. Identify the number of protons, neutrons, and electrons found in the most
abundant element.
4. Identify where we would find the protons, neutrons, and electrons in the
atom of this element.
5. Identify the group and period of the element on the Periodic Table.
swer

Answers

Answer:

1. The evidence that chemical reaction has occurred can be found in the change of the reagents present after the reaction, that is formation of glucose in the area where the reaction is taking place

2. The most abundant element of the chemical reaction is oxygen which has a total quantity of 18 atoms in the reaction

3. The oxygen atom has an atomic number of 8 and therefore contains 8 protons and 8 neutrons and (therefore) 8 electrons (to be neutral, electronically)

4. The protons and the neutrons of the atom, oxygen, are located in the nucleus, while the electron are found in the different orbitals surrounding the atom

5. The element, oxygen, symbol, O, belongs to the group 16 of period 2 in the periodic table

Explanation:

Which gas occupies the highest volume at STP?0.02 mol of O20.1 mol of Cl21 mol of N22 mol of H2

Answers

The correct answer is the fourth option. The gas, 2 mol of H2, occupies the highest volume at STP since at STP the volume of this gas is approximately 44.8 mol as compared to other options this has the greatest amount. At STP, 1 mol of a gas is said to be equal to a volume of 22.4 L.

A protein made up of 125 amino acids contains an isoleucine residue at position 54 in its polypeptide chain. which amino acid could be substituted for this isoleucine and be expected to cause the least disruption in the protein's three-dimensional structure?

Answers

To minimize disruption to a protein’s three-dimensional structure when substituting an amino acid, you typically look for amino acids with similar properties. In this case, you have isoleucine (I) at position 54, which is an aliphatic, nonpolar amino acid. Amino acids with similar properties to isoleucine in terms of aliphatic and nonpolar characteristics include leucine (L) and valine (V).

So, substituting isoleucine at position 54 with leucine or valine would be expected to cause the least disruption in the protein’s three-dimensional structure because they share similar properties. These substitutions involve changing one aliphatic, nonpolar amino acid with another, which is less likely to significantly affect the protein’s overall structure and function.

Other Questions

when this equation is correctly balanced using smallest whole numbers, what is the coefficient of O2(g)

4. How many protons are there in this atom?5. How many neutrons are there in this atom? 6. How many electrons are there in this atom? 7. What is the atomic weight of this atom? 8. Does the mass on the periodic table round to the mass this atom has? 9. What atom is this? 9p+ 10 n° 10. For each electron shown, write on the diagram to indicate which orbital (1s, 2s, 2p,...) each electron is in. 11. Draw the orbital filling diagram for this atom. (Orbital filling is the thing with the boxes and the arrows). 12. Write the electron configuration (1s"2s*) for this atom.

All organic molecules have what element in common

The ratio of H2 gas to O2 gas will always remain 2:1, and the ratio of H2 gas to H2O gas will remain 1:1 so if the gas volumes are measured at the same temperature and pressure: 44.8 liters of H2 + _____ liters of O2 → ____ liters of H2O