All categories

3 years ago

What are the word equations for the following? Please help

Chemistry

2 answers:

REY [17]3 years ago

5 0

Answer:

1. CaO + H2O _____ Ca(OH)2

Calcium oxide + Water _____ Calcium hydroxide

2. 2 HCI + MG _____ MgCl2 + H2

Magnesium + hydrochloric acid _____ Magnesium Chloride + hydrogen gas

Serga [27]3 years ago

4 0

Calcium oxide + water = calcium hydroxide.

Magnesium + hydrochloric acid = magnesium chloride + hydrogen.

Sodium hydrogen carbonate + citric acid = Na3C6H5O7(aq)+3H2O(l)+3CO2(g)

Iron + salt water = 4Fe(OH)3 (rust)

You might be interested in

Which is true of binary ionic compounds?

Dmitry [639]

Answer:

Its a or d if im stupid my b

Explanation:

4 0

3 years ago

What is the mass of 3.25 mol of h2so4

Setler [38]

Answer/ explanation :

The find the mass,

We use this formula

Number of mole = mass/ molar mass

Since number of mole = 3.25mol

Number of mass be x

Molar mass of H2SO4

H - 1.00784 * 2= 2.01568

S - 32.065

O - 15.999 * 4 = 63.996

Note there are 2 moles of H and 4 moles of O and 1 mole of S

Molar mass of H2SO4 = 2.01568 + 32.065 + 63.996

= 98.07668g/mol

Number of mole= 3.25mol

3.25 = x / 98.07668

x = 3.25 * 98.07668

= 318.749g

Therefore, the number of mass is 318.749g

7 0

3 years ago

Rubbing alcohol or isopropanol can be described by the chemical formula C3H7OH. One milliliter of isopropanol has a mass of 0.76

SVETLANKA909090 [29]

A chemical property of isopropanol : D. Isopropanol is flammable.

<h3>Further explanation </h3>

There are changes that occur in the mater: physical changes and chemical changes

Classification uses the principle of the initial and final state of the substance.

Physical changes do not form new substances, so the properties of the particles remain the same.(size,volume,shape)

Example : boiling and freezing, just change its phase form from liquid to gas or from liquid to solid

Chemical changes/reaction form new substances(products) that are different from the initial substances(reactants)

Example : toxic, corroded

So :

the physical properties of isopropanol :

<em>mass, density, evaporation</em>

the chemical properties of isopropanol :

<em>highly flammable</em>

5 0

3 years ago

Read 2 more answers

PLEASE HELPPP 100 POINTS!!

MissTica

Answer:

1) pentane is of higher Molecular mass than propane hence heavier member

2) due to intermolecular hydrogen bonding methanol is liquid having lower molecular weight

3) I) in methanol C = sp3

ii) in methanoic acid C= sp2

5)I) i) The two carbon-oxygen bonds in the methanoate anion, HCO2-, have the same length due to resonance stabilization of the C-O bond

Explanation:

See attachment for question 4

7 0

2 years ago

Which of the following changes has a decrease in entropy?

strojnjashka [21]

There is a change of decrease in entropy in 3Fe(s) + 202(g) -. Fe 304(g)
There is a decrease in a gaseous molecule, which causes a disorder in the system.

Your answer is: 3Fe(s) + 202(g) -. Fe304(g)

Have an amazing day and stay hopeful!

4 0

3 years ago