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Elanso [62]
3 years ago
5

Ions in a certain volume of 0.20MNaCl(aq) are represented in the box above on the left. In the box above on the right, draw a pa

rticulate diagram that represents the ions in the same volume of 0.10MCaCl2

Chemistry
2 answers:
jonny [76]3 years ago
8 0

Answer:

Four Ca²⁺ and eight Cl⁻ ions.  

Explanation:

If

0.20 mol·L⁻¹ NaCl =  8Na⁺ + 8Cl⁻

Then

0.10 mol·L⁻¹ NaCl =  4Na⁺ + 4Cl⁻

And

0.10 mol·L⁻¹ CaCl₂ = 4Ca²⁺ + 8Cl⁻

The square will contain 4 Ca²⁺ ions and 8 Cl⁻ ions.

It should resemble the diagram below

Diano4ka-milaya [45]3 years ago
5 0

Answer:

Explanation:

Find attached solution

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Answer:

D

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Calculate the pressure of the CO₂ (g) in the container at 425 K.
Elanso [62]

The pressure of the CO₂ = 0.995 atm

<h3>Further explanation</h3>

The complete question

<em>A student is doing experiments with CO2(g). Originally, a sample of gas is in a rigid container at 299K and 0.70 atm. The student increases the temperature of the CO2(g) in the container to 425K.</em>

<em>Calculate the pressure of the CO₂ (g) in the container at 425 K.</em>

<em />

<em />

Gay Lussac's Law

When the volume is not changed, the gas pressure is proportional to its absolute temperature

\tt \dfrac{P_1}{T_1}=\dfrac{P_2}{T_2}

P₁=0.7 atm

T₁=299 K

T₂=425 K

\tt P_2=\dfrac{P_1\times T_2}{T_1}\\\\P_2=\dfrac{0.7\times 425}{299}=0.995 `atm

<em />

6 0
3 years ago
26. All atoms area. positively charged, with the number of protons exceeding the number of electronsb, negatively charged, with
user100 [1]
(26) All atoms area...<span><span>with the number of protons equaling the number of electrons

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(28) </span>As a consequence of the discovery of the nucleus by Rutherford, which model of the atom is thought to be true?...<span>Protons. electrons, and neutrons are evenly distributed throughout the volume of the atom.

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If an atom has 5 protons and 4 neutrons and is not in an excited state, how many electrons would Bohr say the atom has?
Gnom [1K]
A it is 4 i hope it helped you

3 0
3 years ago
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What is the relationship between specific heat and the rate of heating?
s344n2d4d5 [400]

Answer:

the rate of heat transfer is directly proportional to the mass flow rate.

Explanation:

There is an elementary equation from basic thermodynamics that states that the rate of heat transfer (Q) equals the mass flow rate (M) times a Constant (the specific heat of water) times the Delta T (fluid temp out minus fluid temp in): Q = M x C x Delta T In other words, the rate of heat transfer is directly proportional to the mass flow rate.

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3 years ago
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