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Debora [2.8K]
2 years ago
14

An empirical formula shows the actual number of atoms of each element in a compound.

Chemistry
1 answer:
My name is Ann [436]2 years ago
7 0

Answer:

true

Explanation:

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martha needs to determine the density of gasoline she has determined the mass to be 1250g and the volume to be 1500ml what is th
Dahasolnce [82]

We know that the equation for density is:

D=\frac{m}{V}

where D is the density, m is the mass in grams, and V is the volume.

Given two of the variables, we can then solve for density:

D=\frac{1250g}{1500mL}=\frac{0.833g}{mL}

Therefore, we now know that the density of the gasoline is 0.833g/mL.

6 0
3 years ago
Balanced equation: SiO2 + 4 HF --> SiF4 + 2H2O
Arlecino [84]
C. 25 Miles

This is because you have 12.5 moles of water and using the ratio this is 2 (molar ratio). Therefore the molar ratio for HF is 4, so 12.5 x 2 = 25 moles
3 0
2 years ago
How many grams of calcium hydroxide must react to give 3.09 g of Ca3(PO4)2?
emmainna [20.7K]
Molar mass:

Ca(OH)₂ = 74.093 g/mol
Ca₃(PO₄)₂ = 310.17 g/mol

Mole ratio:

<span>2 Na</span>₃<span>PO</span>₄<span> + 3 Ca(OH)</span>₂<span> = Ca</span>₃<span>(PO</span>₄<span>)</span>₂<span> + 6 NaOH
</span>
3 x 74.093 g Ca(OH)₂ ----------- 310.17 g Ca₃(PO₄)₂
            ?? g Ca(OH)₂ ----------- 3.09 g Ca₃(PO₄)₂

Mass of Ca(OH)₂ = 3.09 x 3 x 74.093 / 310.17

Mas of Ca(OH)₂ = 686.84211 / 310.17

= 2.214 g of Ca(OH)₂

hope this helps!



7 0
2 years ago
How do the methods of scientist lead to knowlodge
Nikitich [7]

Answer:

dezznuts

Explanation:

6 0
2 years ago
Read 2 more answers
Label each of the following measurements by the quantity each represents. For instance, a measurement of 10.6kg/m3 represents de
postnew [5]

The quantities represented by each of the measurements are

5.0g/mL - Density

37s - Time

47J - Energy or Work

39.56g - Mass

25.3 cm3 - Volume

325 m/s - Time

500m2 - Area

30.23 mL - Volume

2.7 mg - Mass

0.005L - Volume

To determine the quantity each of the measurements represents, we will observe the units.

  • 5.0g/mL

This represents density. Density is the ratio of mass to volume, and mass is measured in grams (g) while volume is measured in milliliters (mL)

  • 37s

This represents time because time is measured in seconds (s)

  • 47J

This represents Energy or Work because they are measured in Joules (J)

  • 39.56g

This represents mass because mass in measured in grams (g)

  • 25.3 cm3

This represents volume because volume is measured in cubic meters (cm³)

  • 325 m s

This represents time. Time can be measured in milliseconds (ms)

  • 500m2

This represents area because area is measured in square meters (m²)

  • 30.23 mL

This represents volume because volume is measured in milliliters (mL)

  • 2.7 mg

This represents mass because mass could be measured in milligrams (mg)

  • 0.005L

This represents volume because volume is measured in liters (L)

Hence, the quantities represented by each of the measurements are

5.0g/mL - Density

37s - Time

47J - Energy or Work

39.56g - Mass

25.3 cm3 - Volume

325 m s - Time

500m2 - Area

30.23 mL - Volume

2.7 mg - Mass

0.005L - Volume

Learn more here: brainly.com/question/1603371

3 0
2 years ago
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