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
tekilochka [14]
2 years ago
13

HELP FAST PLZ!!!!

Chemistry
1 answer:
ra1l [238]2 years ago
3 0
D  ecosystem i think good luck 
You might be interested in
A weak base is added to water. Which information is required to find the strength of its conjugate acid?
lozanna [386]

Answer: C) the values of Kb and Kw

Explanation: i just took the test

5 0
2 years ago
Read 2 more answers
Which term best describes the molecular geometry of ethylene, C₂H₄?
marusya05 [52]
The molecular geometry is trigonal planar. I would choose E
7 0
3 years ago
A buffer is 0.282 m c6h5cooh(aq and 0.282 m na(c6h5coo(aq. calculate the ph after the addition of 0.150 moles of nitric acid to
Sindrei [870]
You have to use the Henderson-Hasselbalch equation. Keep in mind that because the Pka is given the equation changes form slightly:

PH = Pka + log[acid/base]

Step 1 (Figure out the concentrations):

0.282 M of Acid (C6H5OOH) - 0.150 M = 0.132 M of acid
0.282 M of Base (C6HCOO) + 0.150 M = 0.432 M of bas3

Step 2 (Plug into equation):

PH = Pka + log[acid/base]
PH = 4.20 + log[0.132 M/0.432 M]

PH = 3.69

7 0
3 years ago
I need help!!!! Plz help me with the above question
maksim [4K]
The answer will be bar graph

4 0
3 years ago
A chemical reaction takes place inside a flask submerged in a water bath. The water bath contains 3.30kg of water at 23.8°C. Dur
Brums [2.3K]

Answer:

T_2= 31.9\°C

Explanation:

Hello there!

In this case, it is possible to propose an energy balance in order to illustrate how the heat released by the reaction is absorbed by the water:

-Q_{rxn}=Q_{water}

Thus, since the heat released by the reaction is -112 kJ (-112000 J), it is possible to define the hear absorbed by the water in terms of mass, specific heat and temperature change:

-(-112000J)=m_{water}C_{water}(T_2-T_1)

In such a way, it is possible to define the final temperature as shown below:

T_2=23.8\°C+\frac{112000J}{3300g*4.18\frac{J}{g\°C} }\\\\T_2= 31.9\°C

Best regards!

4 0
2 years ago
Other questions:
  • Consider the following equilibrium system involving SO2, Cl2, and SO2Cl2 (sulfuryl dichloride): SO2(g) + Cl2(g) ⇌ SO2Cl2(g) Pred
    9·1 answer
  • Which statement describes an eletron
    10·1 answer
  • Two different proteins X and Y are dissolved in aqueous solution at 37 °C. The proteins bind in a 1:1 ratio to form XY. A soluti
    7·1 answer
  • Can i just have the answers
    7·1 answer
  • In which type of chemical reaction do two or more reactants combine to form one product, only?
    5·1 answer
  • How much Sr(OH)2 • 8 H2O (M = 265.76) is needed to prepare 250.0 ML of solution in which [OH]= 0.100M?
    8·2 answers
  • Craters visible on the moon's surface provide further evidence of
    5·1 answer
  • Whats the ansewr giving brainliest
    8·1 answer
  • 11. Which of the following best explains why Co, gas is easily compressible but solid CO, (dry ice) is incompressible?​
    12·1 answer
  • Read the sentences from the Newsela article, "First All-Female Spacewalk Will Take Place During Women's History Month. "
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!