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Nadusha1986 [10]
3 years ago
12

____ NaBr + ____ Ca(OH)2 ___ CaBr2 + ____ NaOH

Chemistry
1 answer:
Alja [10]3 years ago
4 0

Answer:

<u>2</u> NaBr + <u>1</u> Ca(OH)2 ---> <u>1</u> CaBr2 + <u>2</u> NaOH

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A man walks 3km to the west in3hrs. what is he velocity.
umka21 [38]
V = displacement /time
= 3/3 = 1km/hr
6 0
4 years ago
For the reaction of C 2H 4( g) with O 2( g), to form CO 2( g) and H 2O( g), what number of grams of CO 2 could be produced from
maksim [4K]

Answer:

4.58g of CO₂ could be produced

Explanation:

Based on the reaction:

C₂H₄(g) + 3O₂(g) → 2CO₂(g) + 2H₂O(g)

<em>1 mole of C₂H₄ reacts with 3 moles of oxygen to produce 2 moles of CO₂</em>

<em />

To solve this question we must find the moles of each reactant in order to find limiting reactant. With limiting reactant we can find the moles -And the mass- of CO₂ produced:

<em>Moles C₂H₄ -Molar mass: 28.05g/mol-</em>

2.0g * (1mol / 28.05g) = 0.0713moles

<em>Moles O₂ -Molar mass: 32g/mol-</em>

5.0g * (1mol / 32g) = 0.156moles

For a complete reaction of 0.0713 moles of C2H4 are required:

0.0713 moles C₂H₄ * (3 moles O₂ / 1 mol C₂H₄) = 0.214 moles of O₂

As there are just 0.156 moles, O₂ is limiting reactant.

The moles of CO₂ produced are:

0.156 moles O₂ * (2mol CO₂ / 3mol O₂) = 0.104 moles CO₂

The mass is -Molar mass CO₂: 44.01g/mol-

0.104 moles CO₂ * (44.01g / mol) =

<h3>4.58g of CO₂ could be produced</h3>
4 0
3 years ago
Candle wax melts low temperature, it is not conductive to electricity, it is insoluble in water and partially soluble in solvent
igomit [66]

electrostatic and ionic are definitely not the answer because they have high melting point

hydrogen bonds are too weak and not permanent.

so the answer is apolar as it is soluble in polar solvents (water)

5 0
3 years ago
Read 2 more answers
The ions Cr3+ and O2- combine to form the ionic compound chromium oxide. In what proportions do these ions combine to produce a
Anit [1.1K]
To find the ratio of the the combination for the ion, write the charge of the cation as the subscript for the anion, and the charge of the anion as the subscript of the cation. This will make the charges effectively cancel and you will be left with a neutral ionic compound. Remember, that an ionic compound is made up of a metal and a nonmetal.
For Cr3+ and O2-, you will get the neutral compound to be Cr₂O₃.

The proportion these ions combine in is 2 to 3. 2 ions of Cr3+ and 3 ions of O2-

Your answer is D) 2:3
6 0
4 years ago
Read 2 more answers
Mass of A = 320 g
slamgirl [31]

Answer:

Mass of A=320g

Volume of A=64cm3

Density of B =3g/cm3

Volume of B = 27 cm3

(Not drawn to scale)

and the density of cube A =5.0g/cm3

Please mark me a brainlist

4 0
3 years ago
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