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nikklg [1K]
3 years ago
15

Solutions and colloids are similar in that both are suspensions true or false?

Chemistry
1 answer:
Molodets [167]3 years ago
7 0
The answer is True.:D
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A calorimeter holds 50 g water at 22.0°C. A sample of hot iron is added to the water. The final temperature of the water and iro
makkiz [27]

The change in enthalpy associated with the change in the water’s temperature is 1254 J.

<h3>What is specific heat?</h3>

The amount of heat required to increase the temperature of one gram of a substance by one Celsius degree is known as specific heat.

Enthalpy change will be calculated as:

ΔH = -cmΔT, where

m = mass of water = 50g

c = specific heat of water = 4.18J/g°C

ΔT = change in temperature = 28 - 22 = 6 °C

On putting values in the above equation, we get

ΔH = -(4.18)(50)(6) = -1254 J

Hence change in enthalpy of the reaction is -1254 J.

To know more about enthalpy change, visit the below link:

brainly.com/question/11628413

#SPJ1

7 0
2 years ago
What happens when oil is poured into water? How does this explain the saying “like dissolves like”
Amanda [17]
I can't explain the like dissolves like part but the water and oil I can

when oil is poured into water the oil will stay at the top of the water meaning that water is more dense than oil
7 0
4 years ago
Read 2 more answers
(BRAINLIEST FOR CORRECT AND BEST EXPLAINED ANSWER) What properties distinguish solids, liquids, gases, and plasma from each othe
Svet_ta [14]
A solid has a definite shape and volume. A liquid has a definite volume, but takes the shape of its container. A gas lacks either a defined shape or volume. Plasma is similar to a gas in that its particles are very far apart, but a gas is electrically neutral and plasma has a charge.
3 0
3 years ago
Read 2 more answers
How many grams (of mass m) of glucose are in 285 ml of a 5.50% (m/v) glucose solution?
ZanzabumX [31]
The percentage of glucose given is m/v. This means that the given percentage of volume consists of mass.
In this solution, percentage of glucose is 5.5% m/v.
This means that 5.5% of the volume is the mass of glucose.
Given volume is 285 mL. 
Therefore mass of glucose is 5.50% of 285 mL = (5.5*285)/100
mass of glucose = 15.67 g
4 0
3 years ago
The carbon-carbon bond length in ethylene is ________ than the carbon-carbon bond length in ethane, and the HCH bond angle in et
tigry1 [53]

Answer:

shorter

longer

Explanation:

The carbon-carbon bond length in ethylene is <u>shorter</u> than the carbon-carbon bond length in ethane, and the HCH bond angle in ethylene is <u>longer</u> the HCH bond angle in ethane.

The objective of this question is to let us understand the concept of Bond Length and Bond angle among the unsaturated aliphatic hydrocarbons (i.e alkanes, alkenes and alkynes).

The variation in bond angles of  unsaturated aliphatic hydrocarbons  can be explained by two concepts; The valence shell electron pair repulsion (VSEPR) model and hybridization.

The VSEPR model determines the total number of electron pairs surrounding the central atom of a species. The total number of electron pairs  consist of the bond pairs and lone pairs. All the electron pairs( lie charge ) will then orient themselves in such a way to minimize the electrostatic repulsion between them.

As the number of the lone pairs increases from zero to 2 ; the bond angles diminish progressively.

However;

Hybridization is the mixing or blending of two or more pure atomic orbitals (s,p and d) to form two or more hybrid atomic orbitals that are identical in shape and energy . e.g sp, sp² , sp³  hybrid orbitals etc .

The shape of the geometry of this compound hence determines their bond  angle.

The shape of the geometry of ethane is tetrahedral which is 109.5° in bond angle while that of ethylene is trigonal planar which is 120°.

This is why the HCH bond angle in ethylene is longer  the HCH bond angle in ethane .

6 0
4 years ago
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