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Hatshy [7]
3 years ago
6

Is the formation of a hydrate a physical or chemical process

Chemistry
2 answers:
Mnenie [13.5K]3 years ago
8 0

Formation of hydrates is considered to be a chemical change.

Lesechka [4]3 years ago
8 0
Chemical process is correct
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WaNnA Be BRaINleSt; A satellite was in two separate crashes. In both crashes, the satellite had the same mass. Engineers want to
mr Goodwill [35]

Answer:

Explanation:

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3 0
3 years ago
Determine the concentration of a solution (M) made by dissolving 18.8 g of sodium chloride (NaCl) in 750.0 mL of solution.
Viefleur [7K]

Answer:

0.429 M

Explanation:

To find the molarity, you need to (1) convert grams to moles (using the molar mass), then (2) convert mL to L, and then (3) calculate the molarity (using the molarity ratio).

(Step 1)

Molar Mass (NaCl): 22.990 g/mol + 35.453 g/mol

Molar Mass (NaCl): 58.443 g/mol

18.8 grams NaCl               1 mole
--------------------------  x  ------------------------  =  0.322 moles NaCl
                                     58.443 grams

(Step 2)

1,000 mL = L

 750.0 mL                1 L
------------------  x  -----------------  =  0.7500 L
                            1,000 mL

(Step 3)

Molarity (M) = moles / volume (L)

Molarity = 0.332 moles / 0.7500 L

Molarity = 0.429 M

5 0
2 years ago
A. 24.5 g of ammonia NH3 = how many moles of ammonia?
Art [367]
23.9 11.00 would be the wrong answer because I guessed
4 0
3 years ago
A 10.0cm3 volume of alcohol has a mass of 7.05g. What is the density of the alcohol in grams per cubic centimeter
ExtremeBDS [4]

Answer:

0.705 g/cm³

Explanation:

Step 1: define density

The (volumetric mass) density of a sample or substance, is this sample or substance its mass per unit volume and can be defined through following formula:

ρ = m/v

with ρ = density (kg/m³)

m = mass of the substance (kg )

v = volume (m3)

Step 2: change datat SI-units

10.0 cm³ = 10^-5 m³

7.05 g = 0.00705 kg

ρ = 0.00705 kg / 10^-5 m³  = 705 kg / m³

To convert this to g/cm³ we have to divide by 1000

ρ = 0.705 g/cm³

To control this we calculate 7.05g / 10cm³ = 0.705 g/cm³

The desnity of the alcohol is 0.705 g/cm³

7 0
4 years ago
Balance these equations!<br> 1)<br> AIBr; +<br> K-<br> KBr +<br> AI
Tema [17]

Answer:

Instructions on balancing chemical equations:

Enter an equation of a chemical reaction and click 'Balance'. The answer will appear below

Always use the upper case for the first character in the element name and the lower case for the second character. Examples: Fe, Au, Co, Br, C, O, N, F.     Compare: Co - cobalt and CO - carbon monoxide

To enter an electron into a chemical equation use {-} or e

To enter an ion specify charge after the compound in curly brackets: {+3} or {3+} or {3}.

Example: Fe{3+} + I{-} = Fe{2+} + I2

Substitute immutable groups in chemical compounds to avoid ambiguity.

For instance equation C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced,

but PhC2H5 + O2 = PhOH + CO2 + H2O will

Compound states [like (s) (aq) or (g)] are not required.

If you do not know what products are enter reagents only and click 'Balance'. In many cases a complete equation will be suggested.

Reaction stoichiometry could be computed for a balanced equation. Enter either the number of moles or weight for one of the compounds to compute the rest.

Limiting reagent can be computed for a balanced equation by entering the number of moles or weight for all reage

Explanation:

3 0
3 years ago
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