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4 years ago

What is metric and dimensional analysis

Chemistry

1 answer:

ollegr [7]4 years ago

8 0

Answer:

Metrics are measures of quantitative assessment commonly used for assessing, comparing, and tracking performance or production.

Dimensional analysis is the analysis of the relationships between different physical quantities by identifying their base quantities and units of measure and tracking these dimensions as calculations or comparisons are preformed

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i have an unknown volume of gas at a pressure of 0.50 atm a temperature of 325 k. If i raise the pressure to 1.2 atm, decrease t

Ronch [10]

Assuming that the number of mols are constant for both conditions:
$\frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}$
Now you plug in the given values. V_1 is the unknown.
$\frac{0.50 atm*V_1}{325K} = \frac{1.2 atm* 48 L}{230K}
$
Separate V_1
$V_1= \frac{1.2 atm* 48 L * 325K }{230K*0.50 atm }$
V= 162.782608696 L

There are 2 sig figs

V= 160 L

3 0

3 years ago

What is the net ionic equation of the reaction of FeCl2 with NaOH? Express you answer as a chemical equation including phases.

Lilit [14]

Answer:

Fe²⁺(aq) + 2OH⁻(aq) → Fe(OH)₂(s)

Explanation:

To determine the reaction, we define the reactants:

FeCl₂, NaOH

We dissociate them:

FeCl₂(aq) → Fe²⁺(aq) + 2Cl⁻ (aq)

NaOH (aq) → Na⁺ (aq) + OH⁻(aq)

Salts from chloride are soluble, except for Ag⁺, Pb²⁺, Hg₂²⁺, Cu⁺

The OH⁻ and the Fe²⁺ bonds to make a precipitate.

So, the molecular complete equation is:

FeCl₂(aq) + 2NaOH(aq) → Fe(OH)₂(s) ↓ + 2NaCl(aq)

When we dissociate the elements, we get the net ionic equation but as we produced an state's change, the compound stays the same.

We cancel the spectators ions (the ones, that are repeated)

Fe²⁺(aq) + 2Cl⁻ (aq) + 2Na⁺ (aq) + 2OH⁻(aq) → Fe(OH)₂(s) + 2Na⁺(aq) + 2Cl⁻(aq)

Fe²⁺(aq) + 2OH⁻(aq) → Fe(OH)₂(s)

5 0

3 years ago

ATOMS , help me solve this , and thx for your help

lys-0071 [83]

Answer:

im not sure

Explanation:

4 0

3 years ago

Read 2 more answers

A substance is considered more efficient at storing energy when its specific heat enables it to resist changes in temperature. s

joja [24]

Water stores energy more efficiently than air under equal conditions.

It requires more energy to heat water than it does to heat air because water has a significantly larger heat capacity and specific heat than air. Compared to air, which has a specific heat of 1.005 J/g degreesC, water has a specific heat of 4.186 J/g degreesC.

Specific heat:

The amount of heat required to raise the temperature per unit mass is known as specific heat capacity. The heat in Joules required to increase the temperature of 1 gram of sample by 1 Kelvin or degree Celsius is often stated. Water is an excellent temperature regulator since it has a very high specific heat capacity.

To learn more about Specific heat refer : brainly.com/question/21141291

#SPJ4

7 0

2 years ago

4. Conservation of Mass is one of the key concepts to this unit. How do you

vesna_86 [32]

Answer:

There is no reaction available for us to see.

Explanation:

However, the law of conservation of mass states that the number of atoms in the reactants side must equal the amount of atoms on the product side in a chemical equation. This is because mass cannot be created or destroyed. As a result, we must balance chemical equations to have the same number of atoms of each element on both the reactant and products sides. Additionally, with chemical reactions, all elements within the reaction must remain in the reaction. There cannot be new elements formed or lost in chemical reactions. Hope this helped!

4 0

3 years ago

What is metric and dimensional analysis ​

What is metric and dimensional analysis