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
DaniilM [7]
3 years ago
12

Name one gas that can form when the carbon in coal burns! And describe its harmful effects

Chemistry
1 answer:
nalin [4]3 years ago
4 0
Coal is mainly made of carbon and there’s oxygen in the air so this burns to produce carbon dioxide. Breathing it can really hurt your lungs.
You might be interested in
The___ step in balancing a chemical equation is to take inventory or count atoms on the reactant & the product side.
Kazeer [188]

Answer: The first step in balancing a chemical equation is to take inventory or count atoms on the reactant & the product side.

Explanation:

***If you found my answer helpful, please give me the brainliest. :) ***

6 0
2 years ago
Find the average speed of a person who swims 105 m in 70 s
spin [16.1K]

Answer:

v = 1.5 m/s

Explanation:

Given that,

Distance covered by a person, d = 105 m

Time taken, t = 70 s

We need to find the average speed of the person. We know that the average speed is given by :

v=\dfrac{d}{t}\\\\v=\dfrac{105\ m}{70\ s}\\\\v=1.5\ m/s

So, the average speed of the person is equal to 1.5 m/s.

4 0
2 years ago
A buffer solution is made that is 0.347 M in H2C2O4 and 0.347 M KHC2O4.
irga5000 [103]

Answer:

1. pH = 1.23.

2. H_2C_2O_4(aq) +OH^-(aq)\rightarrow HC_2O_4^-(aq)+H_2O(l)

Explanation:

Hello!

1. In this case, for the ionization of H2C2O4, we can write:

H_2C_2O_4\rightleftharpoons HC_2O_4^-+H^+

It means, that if it is forming a buffer solution with its conjugate base in the form of KHC2O4, we can compute the pH based on the Henderson-Hasselbach equation:

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

Whereas the pKa is:

pKa=-log(Ka)=-log(5.90x10^{-2})=1.23

The concentration of the base is 0.347 M and the concentration of the acid is 0.347 M as well, as seen on the statement; thus, the pH is:

pH=1.23+log(\frac{0.347M}{0.347M} )\\\\pH=1.23+0\\\\pH=1.23

2. Now, since the addition of KOH directly consumes 0.070 moles of acid, we can compute the remaining moles as follows:

n_{acid}=0.347mol/L*1.00L=0.347mol\\\\n_{acid}^{remaining}=0.347mol-0.070mol=0.277mol

It means that the acid remains in excess yet more base is yielded due to the effect of the OH ions provided by the KOH; therefore, the undergone chemical reaction is:

H_2C_2O_4(aq) +OH^-(aq)\rightarrow HC_2O_4^-(aq)+H_2O(l)

Which is also shown in net ionic notation.

Best regards!

4 0
3 years ago
Hellpppppoppopppppppp
Kipish [7]

Answer:

C

Explanation:

it's always colder at night and close to night especially near water and that's when wind tends to blow the most

8 0
3 years ago
Read 2 more answers
The quantity 0.0000064 g expressed in Scientific notation is
SOVA2 [1]
6.4 times 10^-7 is the answer because you are moving your decimal places to the left so it will be negative 7
3 0
3 years ago
Read 2 more answers
Other questions:
  • A . When atoms share electrons to fill their outermost energy levels, they form _________ bonds.
    7·1 answer
  • what volume, in liters, will 6.32 × 10^2 of air occupy if the density of air is 1.29 g/L? Express your answer in scientific nota
    8·2 answers
  • Which of the following statements is not correct? 0.20 mole of O2 = 6.4 g 0.75 mole of H2CO3 = 47 g 3.42 moles CO = 95.8 g 4.1 m
    15·2 answers
  • How can I find the velocity?
    10·2 answers
  • The type of current produced by a maget is
    8·1 answer
  • The bright-red color of highway safety flares comes from strontium ions in salts such as Sr(NO3)2 and SrCO3. Burning a flare pro
    7·1 answer
  • Which of the following gases effuses most rapidly?
    15·1 answer
  • Water has a molar mass of 18.0 g/mol. How many particles of water do you drink if you drink 64 oz., or 1893 grams, of water in a
    14·1 answer
  • Which on the following is used to kill bugs on crops???????
    6·2 answers
  • Convert molecules of vitamin d (molar mass 384.7 g/mol) to grams of vitamin d.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!