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
Advocard [28]
2 years ago
14

In witch step did a chemical change most likely occur

Chemistry
1 answer:
11Alexandr11 [23.1K]2 years ago
6 0

Answer:

step 2

hope this helps!

please mark as brainiest<3

You might be interested in
Nitric acid is produced commercially by the Ostwald process, represented by the following equations. 4 NH3(g) + 5 O2(g) 4 NO(g)
Marrrta [24]

Answer:

The answer to your question is: 1538095.2 kg of NH3

Explanation:

MW HNO3 = 63 kg

MW NO2 = 46 kg

                         3 NO2(g) + H2O(l)--- 2 HNO3(aq) + NO(g)

                            3(46) kg--------------   2(63) kg  

                                  x     ---------------  7600000 kg

           x = 7600000 x 138/126 = 8323809.5 kg og NO2

MW NO = 30            

                         2 NO(g) + O2(g)---2 NO2(g)

                       2(30) ------------------2(46)

                        x        ---------------- 8323809.5 kg  

             x = 8323809.5 x 60/92 = 5428571.4 kg of NO

MW NH3 = 17 kg

                      4 NH3(g) + 5 O2(g) 4 NO(g) + 6 H2O(g)

                       4(17) -------------------- 4(30)

                         x ----------------------- 5428571.4

x = 5428571.4 x 34 / 120

x = 1538095.2 kg of NH3

4 0
3 years ago
Which statement best describes the density of an atom's nucleus?<br>​
malfutka [58]

Answer:

Very small

Explanation:

Simply science

7 0
3 years ago
HELPPPPPP QUICK PLEASE (75 points)
marissa [1.9K]

Answer:

i belive its c

Explanation:

4 0
2 years ago
Read 2 more answers
Which of the changes of state shown in the model happen when thermal energy is added
AysviL [449]

Answer:

sublimation

Explanation:

immediately into a gas when thermal energy is added to it. The process is called sublimation. Sublimation is the change of state from a solid to a gas without going through the liquid state.

3 0
3 years ago
5) answer is A
Burka [1]

Answer:

A)  positive; added

Explanation:

Based on the reaction:

2NaHCO3(s) + 129kJ → Na2CO3(s) + H2(g) + CO2(g)

<em>2 moles of NaHCO3 requires 129kJ to produce 1 mole of Na2CO3, 1 mole of H2 and 1 mole of CO2.</em>

<em />

That means, the energy must be added being, thus, an exothermic reaction. The exothermic reactions have ΔH >0.

Thus, right answer is:

A)  positive; added

3 0
2 years ago
Other questions:
  • If the molar mass is 144 g/mol what is the molecular formula? valproic acid
    11·1 answer
  • A 211 g sample of barium carbonate, baco3, reacts with a solution of nitric acid to give barium nitrate, carbon dioxide, and wat
    11·1 answer
  • The lung capacity of the blue whale is 4900 L . Convert this volume into gallons
    12·2 answers
  • What is quartz made of
    13·2 answers
  • Sodium can achieve greater stability in its valence shell by
    11·1 answer
  • In which state of matter are the particles least able to move?
    7·1 answer
  • What is the molecular formula of the molecule that has an empirical formula of C2H2O and a molar mass of 252.22 g/mol?
    12·1 answer
  • What makes ocean breezes blow toward land by day
    7·2 answers
  • 18.9 g\cm3 what would be the volume of a piece of uranium having a mass of 58 g?
    14·1 answer
  • Describe two ways of using solar energy.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!