All categories

2 years ago

A piece of limestone erodes due to acid rain. This process can be best described as a...

Chemistry

2 answers:

IRISSAK [1]2 years ago

6 0

Answer: The correct option is a.

Explanation: Limestone is a mineral having chemical formula $CaCO_3$ . When it is reacted with acid, it forms a new substance and hence, this reaction is considered as a chemical reaction.

The rocks does not dissolve in the acid easily and therefore this reaction is considered as a slow chemical reaction.

scZoUnD [109]2 years ago

4 0

A. Slow Chemical Change

You might be interested in

Write a balanced chemical equation for the reaction between ammonium

Natasha2012 [34]

Answer:

(NH₄)₃PO₄ (l) + Al(NO₃)₃(l) -----------→ AlPO₄(l) + 3NH₄NO₃(l)

Explanation:

Data Give:

Reaction between ammonium phosphate solution and solution of aluminum nitrate

Write a balanced chemical equation

include phase symbols

Details:

To write a balanced chemical equation we have to know formula units of compounds or molecules

Formula units

ammonium phosphate : (NH₄)₃PO₄

aluminum nitrate: Al(NO₃)₃

ammonium nitrate: NH₄NO₃

Now to write a chemical equation

we have to write the chemical formulas or formula unit of each compound
write the reactant on left side of the arrow
write the product on the right side of the arrow
put a plus sign in 2 reactants and products on each side of the arrow
balance the equation by putting coefficient with compound formula
write the phase symbols on the right corner of the compound formula in brackets

So the Reaction will be

(NH₄)₃PO₄ + Al(NO₃)₃ -----------→ AlPO₄ + NH₄NO₃

Now balance the Chemical equation

(NH₄)₃PO₄ + Al(NO₃)₃ -----------→ AlPO₄ + 3NH₄NO₃

Now write the phase Symbols

(NH₄)₃PO₄ (l) + Al(NO₃)₃(l) -----------→ AlPO₄(l) + 3NH₄NO₃(l)

all compounds in the reaction are in liquid form and soluble in water

*** Note:

There is no aluminum nitrite in chemicals formulas

Also ammonium nitrite can not be used in pure isolated form due to its highly instability

4 0

2 years ago

On a cool morning (12"C), a balloon is filled with 1.5 L of helium. By mid afternoon, the temperature has soared to 32°C. What i

ddd [48]

Answer:

1.6 L

Explanation:

Using Charle's law

$\frac {V_1}{T_1}=\frac {V_2}{T_2}$

Given ,

V₁ = 1.5 L

V₂ = ?

T₁ = 12 °C

T₂ = 32 °C

The conversion of T( °C) to T(K) is shown below:

T(K) = T( °C) + 273.15

So,

T₁ = (12 + 273.15) K = 285.15 K

T₂ = (32 + 273.15) K = 305.15 K

Using above equation as:

$\frac{1.5}{285.15}=\frac{V_2}{305.15}$

$V_2=\frac{1.5\cdot \:305.15}{285.15}$

New volume = 1.6 L

8 0

2 years ago

What indicator of a chemical reaction could be measured using a thermometer?

Oksana_A [137]

Answer:

heat production

Explanation:

7 0

2 years ago

2. Explain what an isotope is and give two important physical properties of isotopes that make them useful in biological researc

katrin [286]

Answer:

<h2>isotope is a variants of a particular chemical element which differ in neutron number, and consequently in nucleon number.All isotopes of a given element have the same number of protons but different number of neutrons in each atom.</h2>

<h2>The 2 important physical properties of isotope is</h2>

<h2>1.<u>M</u><u>e</u><u>l</u><u>t</u><u>i</u><u>n</u><u>g</u><u> </u><u>Points</u></h2><h2>2.<u>B</u><u>o</u><u>i</u><u>l</u><u>i</u><u>n</u><u>g</u><u> </u><u>Points</u></h2>

8 0

2 years ago

250 mL of water is collected during a combustion reaction. The temperature in the

klio [65]

Answer:

10.67 moles is the answers.hope it helped

7 0

2 years ago