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3 years ago

How many meters are there in 23.1 miles?

Chemistry

1 answer:

Hunter-Best [27]3 years ago

4 0

Answer:

3.7 ×10⁴ m

Explanation:

We know that,

1 miles = 1609.34 meter

We need to find how many meters are there in 23.1 miles.

23 miles = 37175.85 m

23 miles = 3.7 ×10⁴ m

So, there are 3.7 ×10⁴ m in 23.1 miles.

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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

When iron metal reacts with sulfuric acid, it produces iron (III) sulfate and hydrogen gas. Balance the equation: Fe + H2SO4 → F

uranmaximum [27]

Taking into account the law of conservation of matter, the balanced reaction is:

2 Fe + 3 H₂SO₄ → Fe₂(SO₄)₃ + 3 H₂

First, you must know that the law of conservation of matter states that since no atom can be created or destroyed in a chemical reaction, the number of atoms that are present in the reagents has to be equal to the number of atoms present in the products.

Then, you must balance the chemical equation. This is, balancing a chemical equation is to equalize the number and class of reactant atoms, ions or molecules with the products, in order to comply with the law of conservation of mass.

For that, you must first look at the subscripts next to each atom to find the number of atoms in the equation. If the same atom appears in more than one molecule, you must add its amounts.

The coefficients located in front of each molecule indicate the amount of each molecule for the reaction. This coefficient can be modified to balance the equation, just as you should never alter the subscripts.

This is because the subscripts that are placed on chemical symbols or formulas indicate the number of atoms that make up the substance. If the coefficients are modified, the quantities of the substance change, but if the subscripts are modified, different substances are originated.

In this case, the balanced reaction is:

2 Fe + 3 H₂SO₄ → Fe₂(SO₄)₃ + 3 H₂

Learn more:

5 0

3 years ago

Read 2 more answers

Arrange the following compounds in order of increasing acidity, and explain the reasons for your choice of order. a. 2,4-dinitro

ludmilkaskok [199]

Compounds in order of increasing acidity will be written as d<c<b<a.

<h3>What is acidity?</h3>

The quantity of hydroxyl ions that a basic molecule may create in an aqueous solution is what is known as the acidity of bases. The quantity of hydronium ions that a substance may create in an aqueous solution determines how basic an acid is.

a, b are more acidic than c and d because of OH group attached to sp2 hybridised carbon which provide resonance stability for conjugate base

in c f has -I effect which increases acidity in a, NO2 has -m effect which increases acidity so increasing order is d<c<b<a

that is cyclohexanol < 2,4-difluorocyclohexanol < phenol < 2,4-dinitrophenol

to learn more about acidity go to -

brainly.com/question/19584961

#SPJ4

3 0

2 years ago

A solution of phosphoric acid was made by dissolving 10.8 g of H3PO4 in 133.00 mL of water. The resulting volume was 137 mL. Cal

Nesterboy [21]

Answer:

Density is: 1.05 g/ml

Mole fraction solute: 0.015

Mole fraction solvent: 0.095

Molarity: 0.80 M

Molality: 0.82 m

Explanation:

A typical excersise of solution.

It is more confortable to make a table for this.

| masss | volume | mol

solute | | |

solvent | | |

solution | | |

Let's complete, what we have.

| masss | volume | mol

solute | 10.8g | |

solvent | | 133 mL |

solution | | 137 mL |

We can first, know how many moles are 10.8 g

Molar Mass H3PO4 = 97.99 g/mol

Mass / Molar mass = mol

10.8 g / 97.99 g/m = 0.110 mol

Density of water is 1 g/ml (it is a very knowly value)

From this data, we can know water mass, solvent.

Density = mass / volume

1 g/ml = mass / 133 mL

Mass = 133 g

We can also have the moles, by the molar mass of water 18 g/m

133 g / 18 g/m = 7.39 mol

| masss | volume | mol

solute | 10.8g | | 0.110 mol

solvent | 133g | 133 mL | 7.39 mol

solution | 143.8g | 137 mL | 7.50 mol

Mass of solution will be solute mass + solvent mass

Moles of solution will be solute moles + solvent moles

Now we can calculate everything.

Molarity means mol of solute in 1 L of solution. (mol/L)

We have to convert 137 mL in L (/1000)

0.137L so → 0.110 m / 0.137L = 0.80 M

Molality means mol of solute in 1kg of solvent.

We have to convert 133g in kg (/1000)

0.133 kg so → 0.110 m/0.133 kg = 0.82 m

Density is mass / volume

Solution density will be solution mass / solution volume

143.8 g/137 mL = 1.05 g/m

Molar fraction is : solute moles / total moles or solvent moles/total moles.

You can also (x 100%) to have a percent of them.

Remember sum of molar fraction = 1

Molar fraction of solute = 0.110 mol / 7.50mol = 0.015

Molar fraction of solvent = 7.39 mol / 7.50 mol = 0.985

5 0

3 years ago

Which one of the following is an element? A. Salt water

natali 33 [55]

An element is a single molecule. the answer is C: Oxygen.

8 0

3 years ago

Read 2 more answers