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
jeyben [28]
3 years ago
11

What is the first thing you notice about a person? .-_-

Chemistry
2 answers:
Ilia_Sergeevich [38]3 years ago
7 0

Answer:

Their smile, I don't know why my eyes just go straight to teeth

Kobotan [32]3 years ago
5 0

Answer:

How they act and if they are thre type of people I could hangout with !

Explanation:

You might be interested in
________ exercise strengthens skeletal muscle, and ________ exercise strengthens skeletal and cardiac muscle.
valentinak56 [21]

Answer:

<h3>... :-!...................nose...........</h3>
6 0
3 years ago
The length of the school's gymnasium is 30 meters long. How many centimeters long is the school's gymnasium​
aleksley [76]

Answer:

The answer to your question is: 3000 cm

Explanation:

30 meters long to cm

We can use a rule of three to solve it

We know that              1 meter ------------------  100 cm

                                  30 meters ----------------    x

                               x = 30(100)/1 = 3000 cm

5 0
3 years ago
Read 2 more answers
N₂O(g) + 3 H₂(g) N₂H4(1) + H₂O(1) AH = -317 kJ/mol
docker41 [41]

Answer:

A

Explanation:

Recall that Δ<em>H</em> is the sum of the heats of formation of the products minus the heat of formation of the reactants multiplied by their respective coefficients. That is:


\displaystyle \Delta H^\circ_{rxn} = \sum \Delta H^\circ_{f} \left(\text{Products}\right) - \sum \Delta H^\circ_{f} \left(\text{Reactants}\right)

Therefore, from the chemical equation, we have that:


\displaystyle \begin{aligned} (-317\text{ kJ/mol}) = \left[\Delta H^\circ_f \text{ N$_2$H$_4$} +  \Delta H^\circ_f \text{ H$_2$O}  \right]   -\left[3 \Delta H^\circ_f \text{ H$_2$}+\Delta H^\circ_f \text{ N$_2$O}\right] \end{aligned}

Remember that the heat of formation of pure elements (e.g. H₂) are zero. Substitute in known values and solve for hydrazine:

\displaystyle \begin{aligned} (-317\text{ kJ/mol}) & = \left[ \Delta H^\circ _f \text{ N$_2$H$_4$} + (-285.8\text{ kJ/mol})\right] -\left[ 3(0) + (82.1\text{ kJ/mol})\right] \\ \\ \Delta H^\circ _f \text{ N$_2$H$_4$} & = (-317 + 285.8 + 82.1)\text{ kJ/mol} \\ \\ & = 50.9\text{ kJ/mol} \end{aligned}

In conclusion, our answer is A.

5 0
2 years ago
Katrina tried to take pictures with her cell phone but discovered that its battery was dead. What happened to the battery?
Aleks04 [339]
C. All the energy stored in the battery had been transformed.
4 0
2 years ago
Read 2 more answers
Need help with question please ..<br> -20 points
san4es73 [151]

Answer:

B oklolol

[tex]\purple{\rule{45pt}{7pt}}\purple{\rule{45pt}{999999pt}}[tex]

8 0
2 years ago
Other questions:
  • When is glucose generated?!? HURRY PLEASE
    11·2 answers
  • Consider the following reaction:
    5·1 answer
  • At what temperature is the following reaction at equilibrium? 2Na, O, + 2H,0 + 4NaOH + O, AH° = -109 kJ, ASO = -133.2 J/K
    7·1 answer
  • What is generally true about the particles in a liquid?
    6·2 answers
  • For the following reaction, 22.8 grams of diphosphorus pentoxide are allowed to react with 13.5 grams of water . diphosphorus pe
    9·1 answer
  • A _______ is formed when tectonic plates collide.
    8·1 answer
  • A solution of sucrose in water is 48.5% sucrose by mass and has a density of 1.118 g/ml. what mass of sucrose, in grams, is cont
    14·2 answers
  • SOMEONE HELP I GOTTA SUBMIT THIS IN LIKE AN HOUR
    10·2 answers
  • Thermal energy is what we call energy that come from ___ of matter
    6·2 answers
  • Select all that are true
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!