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
torisob [31]
3 years ago
9

Please help! Urgent!!!

Chemistry
2 answers:
horsena [70]3 years ago
4 0
A - mixing baking soda and vinegar to make bubbles of carbon dioxide
I am Lyosha [343]3 years ago
3 0
Mixing baking soda and vinegar to make bubbles of carbon dioxide.
You might be interested in
Liquid nitrogen is cold and can be used to cool objects to -196°C. If you put the bottle of warm air in liquid nitrogen at this
vampirchik [111]

Answer:

Explanation:

It depends on how this is done. If you raise the pressure, the nitrogen will disappear (liquify) and all that will be left will be the 21 % oxygen and the 1% argon.

The process is very complicated because the boiling point of nitrogen keeps on changing. The boiling point is unstable.

6 0
3 years ago
Determine the heat needed to warm 25.3 g of copper from 22 degrees celsius to 39 degrees celsius.
Serggg [28]

Answer:

The heat needed to warm 25.3 g of copper from 22°C to 39°C is 165.59 Joules.

Explanation:

Q=mc\Delta T

Where:

Q = heat absorbed  or heat lost

c = specific heat of substance

m = Mass of the substance

ΔT = change in temperature of the substance

We have mass of copper = m = 25.3 g

Specific heat of copper = c = 0.385 J/g°C

ΔT  = 39°C - 22°C = 17°C

Heat absorbed by the copper :

Q=25.3 g\times 0.385 J/g^oC\times 17^oC=165.59 J

The heat needed to warm 25.3 g of copper from 22°C to 39°C is 165.59 Joules.

5 0
3 years ago
What is the dominant greenhouse component and why?
insens350 [35]

Answer: HOPE THIS HELPED! :D

Water vapor is the most abundant and dominant GHG in the atmosphere. Its concentration depends on temperature and other meteorological conditions, and not directly upon human activities.

Explanation:

7 0
3 years ago
Which of the following substances found in tobacco smoke stimulates the brain? A. acetone B. toluene C. nicotine D. ammonia Plea
Vaselesa [24]

The answer is C. Nicotine is the substance found in tobacco smoke that stimulates the brain.

7 0
3 years ago
Read 2 more answers
Determine the equilibrium constant, Kp, for the following reaction, by using the two reference equations below: 2 NO(g) + O2(g)
klio [65]

Answer:

Kp=3.07x10^6

Explanation:

Hello,

In this case, by knowing the given reference reactions, one could rearrange them as follows:

2 NO(g) \leftrightarrow N_2(g) + O_2(g); Kp_2 = \frac{1}{2.3 x 10^{-19}}=4.35x10^{18}

N_2(g) + 2O_2(g) \leftrightarrow 2NO_2(g);Kp_3=(8.4x10^{-7})^2=7.056x10^{-13}

Subsequently, to obtain the main reaction, we add the aforementioned reference rearranged reactions as shown below (just as reference):

2NO(g)+N_2(g)+2O_2\leftrightarrow 2NO_2(g)+N_2+O_2

Consequently, the equilibrium constant is computed as:

Kp=\frac{[N_2][O_2]}{[NO]^2} * \frac{[NO_2]^2}{[N_2][O_2]^2} =Kp_2*Kp_3=4.35x10^{18}*7.056x10^{-13}=3.07x10^6

Best regards.

8 0
3 years ago
Other questions:
  • When copper (ii) carbonate is heated if forms copper (ii) oxide and carbon dioxide?
    15·1 answer
  • How many total atoms are in C6H6
    6·1 answer
  • aluminum nitrite and ammonium cloride react to form aluminium chloride. nitrogen and water. what mass of alluminum chloride is p
    5·1 answer
  • 0.932 g/63.546 g/mol
    9·1 answer
  • Water causes many electrolytes to dissociate __________.
    7·1 answer
  • Name an element which matches the description
    5·1 answer
  • Can someone PLEASE help me! I have missed a few days of school due to sickness and my teacher is making me make up a lab! She ga
    8·1 answer
  • The hydrogen atom of one water molecule bonds with the oxygen atom of another water molecule. What is this bond referred to as?
    6·2 answers
  • to chemicals mixed together to make heat physiacal or chemical change THATS IS ALL IMMA SAY ( DONT ANSWER IF THERES NO EXPLATION
    14·1 answer
  • Consider the following equilibrium reaction having gaseous reactants and products.4HCl + O2 ⇌ 2H2O + Cl2Which of the following w
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!