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3 years ago

The Density equation is:

Chemistry

1 answer:

Sergeu [11.5K]3 years ago

6 0

Answer:

p=m/v

p equals density M equals mass and v = volume

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The expression CaCO3 → CaO + CO2 is an example of a

sattari [20]

It is a decomposition 'reaction

8 0

4 years ago

Read 2 more answers

How many grams of oxygen are required to react with 12.0 grams of octane(C8H18) in the combustion of octane in gasoline?

solniwko [45]

Answer : 42 grams of oxygen are required.

Explanation :

Step 1 : Write balanced chemical equation.

The combustion reaction of octane with oxygen can be written as,

$2 C_{8}H{18} (g) + 25 O_{2} (g) \rightarrow 16 CO_{2} (g) +18 H_{2}O (g)$

Step 2 : Find moles of octane.

The given mass of octane is 12 g

Molar mass of octane is 114.2 g/mol

The moles of octane are calculated as,

$moles =\frac{grams}{MolarMass} =\frac{12g}{114.2g/mol} = 0.105 mol$

We have 0.105 mol octane.

Step 3: Use mole ratio from balanced equation to find moles of O₂

The mole ratio of octane and O₂ is 2 : 25. Let us use this as a conversion factor.

$0.105 mol C_{8}H_{18} \times\frac{25mol O_{2}}{2molC_{8}H_{18}} = 1.31 mol$

We have 1.31 mol O₂.

Step 4 : Convert moles of O₂ to grams.

The molar mass of O₂ is 32 g/mol.

The grams of O₂ can be calculated as,

$1.31 mol O_{2} \times\frac{32g}{mol} = 42 grams$

42 grams of oxygen are required.

8 0

3 years ago

The density of water is 1.00 g/mL. If your swimming pool holds 208,000 gallons of water, what is the weight of the water in a fi

Natasha2012 [34]

Answer:

12.455≈12.5 tons

Explanation:

1 US gallon of water (gal) = 8.35 pounds of water (lb wt.)

so we divide 208,000 by 8.35 to covert to pounds

then divide the pounds by 2000 to convert to tons.

8 0

3 years ago

a volumetric pipette haas an uncertainty of 0.01 cm what are the lowest and highest possible volumes for a measurement of 0.20cm

Vanyuwa [196]

Answer:

Possible lowest volume = 0.19 cm

Possible highest volume = 0.21 cm

Explanation:

Given Data

uncertainty = 0.01 cm

total volume = 0.20 cm

Possible lowest volume = ?

Possible highest volume = ?

Solution:

Possible lowest volume = total volume - uncertainty

Possible lowest volume = 0.20 cm - 0.01 cm

Possible lowest volume = 0.19 cm

Possible highest volume = total volume + uncertainty

Possible highest volume = 0.20 cm - 0.01 cm

Possible highest volume = 0.21 cm

5 0

3 years ago

What is the atomic radi for Cs and Cs+1

Margaret [11]

Answer:

Atomic radi for Cs=298 Pico mter (pm)

Atomic radi for Cs+ =167 Pico mter (pm)

Explanation:

Cations are always smaller than the neutral atom

3 0

3 years ago