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nika2105 [10]
3 years ago
11

What is the symbol for an ion with a 3+ charge, 28 electrons, and a mass number of 71

Chemistry
1 answer:
zhenek [66]3 years ago
7 0

Answer:

Ga3+ is a gallium cation

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Water (2230 g ) is heated until it just begins to boil. If the water absorbs 5.73×105 J of heat in the process, what was the ini
shutvik [7]

Answer: 38.5^0C

Explanation:

To calculate the initial temperature of the water:

q=m\times c\times (T_{final}-T_{initial})

where,

q = heat absorbed = 5.73\times 10^5J

c = specific heat of water = 4.18J/g^oC

m = mass of water = 2230 g

T_{final} = final temperature of water = 100^0C

T_{initial} = initial temperature of metal = ?

Now put all the given values in the above formula, we get:

5.73\times 10^5J=2230g\times 4.18J/g^oC\times (100-T_i)^0C

(100-T_i)=61.5

T_i=100-61.5)=38.5^0C

Thus, the initial temperature of the water is 38.5^0C

5 0
3 years ago
In a calorimeter, 10 g of ice melts with a heat of fusion of 334 J/g. How much heat is released?
jeka57 [31]

Answer:

No heat is released.

Explanation:

A substance absorbs heat when it melts.

The formula for the heat absorbed is

q = m\Delta_{\text{fus}}H

Data:

m = 10 g

\Delta_{fus) H=\text{334 J/g}

Calculations:

q = 10 \times 334 = \text{3340 J = 3.34 kJ}\\\text{The ice }\boxed{\textbf{absorbs 3.34 kJ}} \text{ when it melts}.

6 0
3 years ago
If 76.4 grams of ammonium chloride are used, how many grams of water are
Ira Lisetskai [31]

Answer:

6

Explanation:

4 0
3 years ago
50 POINTS
Marina86 [1]

Answer:

A mixture whose components are soluble in each other. ... a solution that has water as its solvent; most have an ionic substance as the solute, may contain a liquid ... The suspensions of particles larger than individual ions or molecules, but the ... This effect is used to determine whether a mixture is a true solution or a colloid.

process of solute particles being surrounded by water molecules arranged in a ... solution. homogeneous mixture consisting of a solute dissolved into a solvent. ... apart from the crystal, the individual ions are then surrounded by solvent particles in a ... are intermediate in size between those of a solution and a suspension.

A suspension is a heterogeneous mixture in which some of the particles ... The particles in a suspension are far larger than those of a solution, so gravity is … ... Particle size: 0.01-1nm; atoms, ions or molecules, Particle size: ... solutions because the individual dispersed particles of a colloid cannot be seen.

Explanation:

8 0
3 years ago
A solid precipitate is formed from the reaction of lead nitrate and sodium chromate.
Serhud [2]
I believe it's Filtration.
4 0
3 years ago
Read 2 more answers
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