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

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:

2 Na₃PO₄ + 3 Ca(OH)₂ = Ca₃(PO₄)₂ + 6 NaOH

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