Free Show 10 Questions 10 Marks 7 Mins Latest RRB Group D Updates Last updated on Jan 5, 2023 RRB Group D PET Admit Card Released for ECoR, WR & SR on 4th January 2023. RRB Group D PET Schedule released for RRB Ajmer. RRB Group D Scorecard Link is active now. Candidates can check their individual scores now. RRB Group D PET Schedule has been Released on 26th December 2022 for various zones. The RRB Group D Results & Cut-Off declared on 22nd & 23rd December 2022! The exam was conducted from 17th August to 11th October 2022. The RRB (Railway Recruitment Board) is conducting the RRB Group D exam to recruit various posts of Track Maintainer, Helper/Assistant in various technical departments like Electrical, Mechanical, S&T, etc. The selection process for these posts includes 4 phases- Computer Based Test Physical Efficiency Test, Document Verification, and Medical Test.
Last updated date: 03rd Jan 2023 • Total views: 214.2k • Views today: 21.40k Answer Verified Hint: We know that 1 mole of the substance is the basic unit which used to express the amount of substance. The 1 mole of substance contains the same amount of substance which is present in 12g of carbon-12 atom. The 1 mole of substance contains \[6.023 \times {10^{23}}\]of elementary entities. Complete step by step solution: Note: Calcium hydroxide is the slaked lime which is white powdery in appearance. It is not very soluble in water and it is a hexagonal crystal in structure. It is soluble slightly in acids and glycerol. It is used in the paper industry and in the process of sewage treatment. Related Questions Question 1 Which element has the symbol \[{\text{Sb}}\] ? Question 2 Which element has the symbol \[{\text{Sb}}\] ? Question 3 Write the chemical
formula of the combination of the following ions: Question 4 What is the chemical formula of Ammonium phosphate? Question 5 The simplest formula of a compound containing $50\% $ of an element $X$ (Atomic weight Question 6 What is the chemical formula of Washing soda? Question 7 The molecular formula of magnesium acetate is: Question 8 Formula of phosphoric acid is ${H_3}P{O_4}$. A metal M forms chloride of the formula $MC{l_2}$. What is the formula of its phosphate? Question 9 Formic acid is: Toll Free:1800-120-456-456 Mobile:+91 988-660-2456 (Mon-Sun: 9am - 11pm IST) Questions?Chat with us How many atoms are there in a mole of Ca OH 2?So, each molecule of ${\text{Ca}}{\left( {{\text{OH}}} \right)_{\text{2}}}$ has a total of five atoms, one of calcium, two of oxygen and two of hydrogen.
How many hydrogen atoms are present in 2 molecules of Ca OH 2?The correct answer is Two. Calcium hydroxide (Ca(OH)2) contain two hydrogen atoms molecule.
What elements are present in Ca OH 2?Ca(OH)2 is the molecular formula for the chemical compound called calcium hydroxide. The formula shows that this compound is made from the chemical elements calcium (Ca), oxygen (O), and hydrogen (H).
Is Ca OH 2 a single atom?In the case of Ca(OH)2, there are one calcium atom, two oxygens atoms, and two hydrogen atoms.
|