____ NaBr + ____ Ca(OH)2 ___ CaBr2 + ____ NaOH
1. ____ NaBr + ____ Ca(OH)2 ___ CaBr2 + ____ NaOH
QUESTION:
____ NaBr + ____ Ca(OH)₂ → ___ CaBr₂ + ____ NaOH
ANSWER:2 NaBr + 1 Ca(OH)₂ → 1 CaBr₂ + 2 NaOH
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2. ____ NaBr + ____ Ca(OH)2 ___ CaBr2 + ____ NaOH
Answer:
NaBr + Ca(OH)2 = CaBr2 + NaOH - Chemical Equation Balancer.
3. 1. ____ NaBr + ____ Ca(OH)2 à ___ CaBr2 + ____ NaOH
Answer:
NaBr + Ca(OH)2 = CaBr2 + NaOH - Chemical Equation Balancer.
4. How many compound/s are there in Ca(OH)2?
Answer:
Calcium hydroxide, Ca(OH) 2 consists of one calcium atom (A r = 40), two oxygen atoms (A r = 16) and two hydrogen atoms (A r = 1).
Explanation:
5. Give names of the following compounds... Their last name should end in __IDE_for ionic 1. LiF2. NaBr3. H24. Na2SO45. MgBr26 .Ca(OH)27. MgS8. CaF29. H2O10.CaO11.Mg(OH)212.H2O213.CO214.LiO15.CuCl2
1. Lithium fluoride
2. Sodium bromide
3. Hydrogen monohydride
4. Sodium sulfate
5. Magnesium bromide
6. Calcium hydroxide
7. Magnesium sulfate
8. Calcium fluoride
9. Water
10. Oxocalcium
11. Magnesium hydroxide
12. Hydrogen peroxide
13. Carbon dioxide
14. Lithium oxide (?)
15. Copper(II) chloride
6. What mass of ca(oh) 2 is present in 500. ml of 0.00500 molar ca(oh) 2?
Answer:
2.778g
Explanation:
Molarity =
Mass of solute /(Gram molecular mass of solute × Volume of solution in litres)
Mass of C a ( O H ) 2 = ( 0.0250 M × 74.093 g m o l × 1.5 L )
Mass of C a ( O H ) 2 = 2.778 g
7. what is cation of Ca+2 , OH-
Answer:
calcium ion
Explanation:
PubChem CID 271
Structure
Calcium ion_small.png
Find Similar Structures
Molecular Formula Ca+2
Synonyms
calcium ion
Calcium cation
Calcium(2+)
Calcium ions
Calcium(2+)ions
More...
Molecular Weight
40.08 g/mol
Dates
Modify
2020-10-31
Create
2004-09-16
Calcium Cation is the metabolically-active portion of calcium, not bound to proteins, circulating in the blood.
NCI Thesaurus (NCIt)
Calcium(2+) is a calcium cation, a divalent metal cation and a monoatomic dication. It has a role as a human metabolite and a cofactor.
8. 1. Calculate the volume of CO2 at 77oF and 765 mmHg required to produce 0.100 kg of Ca(HCO3)2 by its reaction with Ca (OH)2. Equation: CO2 + Ca(OH)2  Ca(HCO3)2
The volume of CO₂ = 29.975 L
Further explanationGiven
T=77 F=25 C = 298 K
P = 765 mmHg= 1.00658 atm
mass Ca(HCO₃)₂ = 0.1 kg = 100 g
Reaction(balanced)
2CO₂ + Ca(OH)₂ ⇒Ca(HCO₃)₂
Required
The volume of CO₂
Solution
Find mol Ca(HCO₃)₂(MW=162,1146 g/mol) :[tex]\tt mol=\dfrac{100~g}{162,1146~g/mol}=0.617[/tex]
Find mol of CO₂From the equation,mol ratio CO₂ : Ca(HCO₃)₂ = 2 : 1, so mol CO₂ :
[tex]\tt 2\times 0.617=1.234[/tex]
Find volume of CO₂Use ideal gas law to find volume
[tex]\tt V=\dfrac{nRT}{P}=\dfrac{1.234\times 0.08205\times 298}{1.00658}=29.975~L[/tex]
Learn moreExample of ideal gas law in real life
brainly.ph/question/2117053
Example Problem And solution Of combined gas laws
brainly.ph/question/2143722
applications involving combined gas law
brainly.ph/question/2341366
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9. How many molecules are there in Ca(OH)2
Explanation:
Calcium hydroxide, Ca(OH) 2 consists of one calcium atom (A r = 40), two oxygen atoms (A r = 16) and two hydrogen atoms (A r = 1)
Correct me if im wrong po :))
10. 3. What general equation represents a decomposition reaction?a. A + B → ABc. AB → A+Bb. A + BC →→ AB + Cd. AB + CD → AD+CB4. Which of the following is an example of a double replacement reaction?a. CaSO4 + Mg(OH)2Ca(OH)2+ MgSO4(aqb. Cla+ NaBr-NaCl+ Bragc. FeBra + NaFe + NaBrd. Pb) + FeSO4(→ PbSO4 + Few
Answer:
3.D.
4.A
Explanation:
hope it helps btw brainliest pls
11. Formula weight Ca (OH)2
Answer:
CALCIUM HYDROXIDE. 1305-62-0. Slaked lime. Hydrated lime. Ca(OH)2. More... Molecular Weight. 74.09 g/mol. Component Compounds.
Molecular Formula: Ca(OH)2 or CaH2O2
Molecular Weight: 74.09 g/mol
PubChem CID: 6093208
12. double replacement of Ca(OH)2+HCl
HCl + Ca(OH)2 = CaCl2 + H2O - Chemical Equation Balancer.
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13. The pH of 0.10M Ca(OH)2 solution.
Answer:
Ca(OH)2 is a strong base that dissociates in water to give two OH- ions per formula unit. Thus, the concentration of OH- ions in the solution is 2 x (0.011 M ) = 0.022M . We can calculate the pH of the solution in two equivalent ways .
14. Ca(OH)2 percent composition
Answer:
54%
Explanation:
The atomic mass of Ca is 40.1 g/mol.
The molar mass of Ca(OH) 2 =74g/mol.
1 mole of Ca(OH) 2= 74 g Ca(OH) 2 =40.1 g Ca
The percentage composition of calcium in calcium hydroxide
= 40.1×100
------------------ =54%.
74
15. calculate the number of moles in 111g Ca(OH) 2
Given: 111g Ca(OH)2
Unknown: Moles = ?
Formula:
Moles = Mass × 1mol / Molar Mass
Solution:
Note: Since molar mass is not given, find it first by getting the mass of each element presented in the given.
Ca = 40.1g/mol
O = 16g/mol × 2 = 32g/mol
H = 1.01g/mol × 2 = 2.02g/mol
Molar Mass
= 40.1g/mol + 32g/mol + 2.02g/mol
= 74.12g/mol
Moles
= 111g Ca(OH)2 × 1mol / 74g Ca(OH)2
= 1.5mol Ca(OH)2
Note: The unit for grams was cancelled out, so the unit for moles will remain.
Final Answer: Moles = 1.5mol Ca(OH)2
16. Molar mass1) NaBr2) PbSO43) iron (ii) phosphate4) Ca (OH)25) ammonium sulfide6) Na3PO47) Zn (C2H3O2)28) (NH4)2CO39) C6H12O610) silver fluoride
Answer:
1. 102.894 g/mol
2. 303.26 g/mol
3. 357.48 g/mol
4. 74.093 g/mol
5. 68.154 g/mol
6. 163.94 g/mol
7. 183.497 g/mol
8. 96.09 g/mol
9. 180.156 g/mol
10. 126.866 g/mol
17. What is the Molar Mass of Ca(OH)2? (2 is a subscript)
Molar mass is the sum of all masses. So, if Ca(OH)2. You have to get the atomic mass of each element.
Ca= 40
O= 16
H = 1
M= 40 + 2(16+1)
= 40 + 2(17)
= 40 + 34
Molar Mass = 74 gram/mole
18. How many grams of Ca(OH)2 are needed to neutralize 25.0 mL of 0.100 M HNO3? The reaction proceeds as follows: 2HNO3 (aq) + Ca(OH)2 (s) → H2O (l) + Ca(NO3)2 (aq)
ANSWER:
0.0926 g Ca(OH)2 or 0.093 g Ca(OH)2
EXPLANATION:
19. Given the following reaction: CaBr2 + 2 KOH -------> Ca(OH)2 + 2 KBr What mass, in grams, of CaBr2 is consumed when 96 g of Ca(OH)2 is produced?
Answer:
Ca(OH)2 = 1236576
Explanation:
20. Q. How many moles of Ca atoms are contained in 77.0 grams of Ca(OH)2?
Answer:
Calcium Hydroxide has three atoms 5 atoms in each molecule.
Explanation:
hope it's will help you
21. which of the following represent the correct formula of a compound? A. KCI B. CA(CIO3)3C. NaBr D.Cu2O3
Answer:
A.KCI.
Explanation:
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22. 6-10. How many grams of Ca(OH)2 are needed to neutralize 25.0 mL of 0.100 M HNO3? The reaction proceeds as follows: 2HNO3 (aq) + Ca(OH)2 (s) → H2O (l) + Ca(NO3)2 (aq)
First, let's write a balanced chemical equation for the reaction:
2HNO3 (aq) + Ca(OH)2 (s) → H2O (l) + Ca(NO3)2 (aq)
From the equation, we can see that one mole of Ca(OH)2 reacts with 2 moles of HNO3.
To calculate the number of moles of HNO3 in 25.0 mL of 0.100 M solution:
0.100 mol/L x 0.0250 L = 0.00250 mol HNO3
Since 2 moles of HNO3 react with 1 mole of Ca(OH)2, we need half as many moles of Ca(OH)2 as HNO3. Therefore:
0.00250 mol HNO3 x 1 mol Ca(OH)2 / 2 mol HNO3 = 0.00125 mol Ca(OH)2
Finally, we can calculate the mass of Ca(OH)2 required using its molar mass:
0.00125 mol Ca(OH)2 x 74.093 g/mol = 0.0926 g Ca(OH)2
Therefore, approximately 0.0926 grams of Ca(OH)2 are needed to neutralize 25.0 mL of 0.100 M HNO3.
23. 1. NaBr2. CaO3. Li2O4. MgBr25. Be(OH)2
Answer:
1. Sodium Bromide
2. Calcium Oxide
3. Lithium Oxide
4.Magnesium Bromide
5. Beryllium hydroxide
24. Name the following ionic compound. Patulong po 1.) NaBr 2.) CaO 3.) Li2O 4.) MgBr2 5.) Be(OH)2
Answer:
1-Sodium bromide
2-Oxocalcium
3-Lithium oxide
4-Magnesium bromide
5-Beryllium Hydroxide
Answer:
1)SODIUM BROMIDE
2)CALCIUM OXIDE
3)LITHIUM OXIDE
4)MAGNESIUM BROMIDE
5)BERYLLIUM HYDROXIDE
Explanation:
25. _Ca3P2 + H2O _ Ca(OH)2 + PH3
QUESTION:
_ Ca₃P₂ + _ H₂O → _ Ca(OH)₂ + _ PH₃
ANSWER:1 Ca₃P₂ + 6 H₂O → 3 Ca(OH)₂ + 2 PH₃
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26. Formula weight Ca (OH) 2
Answer:
74.09 g/mol
(IHopeIHelpedYou)
27. 1. 48.0 mL of Ca(OH)2 solution was titrated with 19.2 mL of 0.385 M HNO3. Determine the molarity of the Ca(OH)2solution.
Answer:
Ca(OH)2 + 2HNO3 ==> Ca(NO3)2 + 2H2O
mols HNO3 = M x L = ?
Look at the coefficients. mols Ca(OH)2 = 1/2 mols HNO3.
Then M (Ca(OH)2 = mols/L
28. How many NH3 molecules are produced by the reaction of 4.0 mol of Ca(OH)2 according to the following equation:(NH4)2SO4+Ca(OH)2⟶2NH3+CaSO4+2H2O
Answer:
1 mol Ca(OH)2 produces 2 mol NH3
4 mol Ca(OH)2 will produce 8 mol NH3
1 mol NH3 contains 6.022*10^23 molecules NH3
8 mol NH3 contain 8*6.022*10^23 = 4.8*10^24 molecules NH3
29. Zoida dissolves 35 g Ca(OH)2 in 125 g of water. Find the % by mass of Ca(OH)2 in a solution.
Answer:
35 digit 125 rose ok bye ingat po kayo
Answer:
Ewan
Explanation:
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30. 3 Ca(OH)2+ Al2(SO4)3 → __CaSO4+ __ Al(OH)3
[tex]\tt{\huge{\red{Answer:}}}[/tex]
3 Ca(OH)₂ + Al₂(SO₄)₃ → 3 CaSO₄ + 2 Al(OH)₃
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