1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
brilliants [131]
3 years ago
11

When MgCO3(s) is strongly heated, it produces solid MgO as gaseous CO2 is driven off.

Chemistry
1 answer:
AveGali [126]3 years ago
8 0
MgCO_3--^T-->MgO + CO_2\uparrow

the oxidation number of carbon in MgCO3 = +IV
the oxidation number of carbon in CO2 = +IV

so, there is no change
You might be interested in
A buffer solution is composed of 7.50 mol of acid and 4.75 mol of the conjugate base. If the pKa of the acid is 4.90 , what is t
Mamont248 [21]

Answer:

The correct answer is: pH= 4.70

Explanation:

We use the <em>Henderson-Hasselbach equation</em> in order to calculate the pH of a buffer solution:

pH= pKa + log   \frac{ [conjugate base]}{[acid]}

Given:

pKa= 4.90

[conjugate base]= 4.75 mol

[acid]= 7.50 mol

We calculate pH as follows:

pH = 4.90 + log (4.75 mol/7.50 mol) = 4.90 + (-0.20) = 4.70

7 0
3 years ago
Are we likely to run out of gold in the near future ?
sweet [91]
Earth isn’t likely going to be running out of gold for around 50-100 years
5 0
4 years ago
Might be hard to read but i do not understand what the “K” means.
alexdok [17]

it means kinetic energy

6 0
4 years ago
Read 2 more answers
1. How do aquatic animals obtain oxygen?
Ilya [14]

Answer:

the second one filter for dissolved

Explanation:

3 0
3 years ago
How many grams of tin are found in 3.5 moles of tin
Debora [2.8K]
Tin has a molecular weight of 118.7 That is the mass in grams of one mole. 
<span>3.50 * 118.7 = 415</span>
7 0
3 years ago
Read 2 more answers
Other questions:
  • When aqueous solutions of K3PO4 and Ba(NO3)2 are combined, Ba3(PO4)2 precipitates. Calculate the mass, in grams, of the Ba3(PO4)
    5·1 answer
  • A compound has the empirical formula . a 256-ml flask, at 373 k and 750. torr, contains 0.527 g of the gaseous compound. give th
    7·1 answer
  • What is the maximum number of electrons found in any energy level of the known elements? (Refer to the periodic table.)
    13·2 answers
  • 7. If all of the forces on an object are balanced, the object?
    14·1 answer
  • Write dissociation equations for the following<br><br> a) AgNO3 -&gt;<br> b) K2CO3 -&gt;
    5·1 answer
  • In the reaction
    14·1 answer
  • Which of the following is NOT a reason why index fossils are chosen for determining ages of rocks? Select all that apply.
    12·1 answer
  • Calculate the percent ionization of benzoic acid at the following concentrations. (a) 0.32 M WebAssign will check your answer fo
    7·1 answer
  • Someone please help me I will give BRAINLIST
    10·2 answers
  • Compare the microbumps material with antibiotics:
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!