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Leni [432]
3 years ago
14

A double replacement reaction can be best described as a reaction in which

Chemistry
1 answer:
ICE Princess25 [194]3 years ago
7 0
C. Ions are exchanged between two compounds
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Answer the following question.
aivan3 [116]

Answer:

B) The north and south Poles

Explanation:

when dealing with magnets they have a negative and Positive charge on their south and north poles. Negative attacks with positive and positive with negative so both poles on each magnet should react to each other

4 0
3 years ago
Calculate the mass of hydrogen formed when 27 g of aluminum reacts with excess hydrochloric acid according to the balanced equat
Alex

6.069 grams is the  mass of hydrogen formed when 27 g of aluminum reacts with excess hydrochloric acid.

Explanation:

Balanced equation for the reaction:

2 Al + 6 HCl → 2 AlCl₃ + 3 H₂

data given:

mass of aluminum = 27 grams

atomic mass of one mole of aluminum = 26.89 grams/mole

formula to calculate number of moles:

number of moles = \frac{mass}{atomic mass of one mole}

number of moles = \frac{27}{26.89}

                              = 1.004 moles of aluminum will react

from the balanced equation:

2 moles of Al reacted to form 3 moles of H2

1.004 moles of Al will produce x moles of H2

\frac{3}{2} = \frac{x}{1.004}

x = 3.012 moles of H2 will be formed.

mass will be calculated as number of moles multiplied by atomic weight

mass of 3.012 moles of hydrogen ?(atomic weight of one mole H2 = 2.015 grams)

= 3.012 x 2.015

= 6.069 grams of H2 will be formed.

6 0
3 years ago
Which of these solutes raises the boiling point of water the most?
Vlad [161]
I think the answer would be Ionic sodium phosphate (Na3PO4) because it has the greatest boiling point elevation.
7 0
3 years ago
Read 2 more answers
Identify the acid,
astraxan [27]

Answer:

Lime water Ca(OH)2 is a base

Potassium oxide K2O is a basic oxide

Copper sulphate CuSO4 is a salt

And vinegar is an acid

Explanation:

5 0
3 years ago
A 1.00-L sample of carbon tetrachloride has a mass of 1.58 kg. What is the density of this substance in g/cm3?
Hoochie [10]

Answer:

1.58gcm⁻³

Explanation:

Given parameters:

Volume of sample = 1.00L

Mass of sample = 1.58kg

unknown:

Density of the sample

Solution:

The density of a substance is expressed as its mass per unit volume.

The units of the parameters are given for volume as liters and for mass as kg.

We need to convert to cm³ for volume and into g for the mass:

        1L = 1000cm³:

        Therefore, the volume of the sample is 1000cm³

For the mass:

           1kg = 1000g

           1.58kg gives 1.58 x 1000g = 1580g

The density of the sample will be:

               Density  = \frac{mass}{volume}

               Density = \frac{1580}{1000} = 1.58gcm⁻³

3 0
3 years ago
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