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
Temka [501]
4 years ago
13

How do you know if it’s positive or negative

Chemistry
1 answer:
Delvig [45]4 years ago
4 0
Zero
Negative
Positive
You might be interested in
What would be the difference in your weight (remember weight is the force of gravity acting on you) if you were 3 times further
AnnyKZ [126]

Answer:

It would be 3 times as much gravity or 7 times

Explanation:

7 0
3 years ago
What can be said about an Endothermic reaction with a negative entropy change?The reaction isa. spontaneous at all temperatures.
Lyrx [107]

Answer:

1. d. The reaction is spontaneous in the reverse direction at all temperatures.

2. c. The reaction is spontaneous at low temperatures.

Explanation:

The spontaneity of a reaction is associated with the Gibbs free energy (ΔG). When ΔG < 0, the reaction is spontaneous. When ΔG > 0, the reaction is non-spontaneous. ΔG is related to the enthalpy (ΔH) and the entropy (ΔS) through the following expression:

ΔG = ΔH - T. ΔS  [1]

where,

T is the absolute temperature (T is always positive)

<em>1. What can be said about an Endothermic reaction with a negative entropy change?</em>

If the reaction is endothermic, ΔH > 0. Let's consider ΔS < 0. According to eq. [1], ΔG is always positive. The reaction is not spontaneous in the forward direction at any temperature. This means that the reaction is spontaneous in the reverse direction at all temperatures.

<em>2. What can be said about an Exothermic reaction with a negative entropy change?</em>

If the reaction is exothermic, ΔH < 0. Let's consider ΔS < 0. According to eq. [1], ΔG will be negative when |ΔH| > |T.ΔS|, that is, at low temperatures.

3 0
3 years ago
Which stages require solar radiation ? Thank you
Olin [163]

solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays.

8 0
3 years ago
Calculate the molar solubility of ca(io3)2 in each solution below. the ksp of calcium iodate is7.1 × 10−7.
e-lub [12.9K]
In order to find the answer, use an ICE chart:

Ca(IO3)2...Ca2+......IO3- 
<span>some.......0..........0 </span>
<span>less.......+x......+2x </span>
<span>less........x.........2x 
</span>
<span>Ca(IO₃)₂ ⇄ Ca⁺² + 2 IO⁻³
</span>
K sp = [Ca⁺²][IO₃⁻]²
K sp = (x) (2 x)² = 4 x³
7.1 x 10⁻⁷ = 4 x³
<span>x = molar solubility = 5.6 x 10</span>⁻³ M

The answer is 5.6 x 10 ^ 3 M. (molar solubility)
5 0
3 years ago
Read 2 more answers
Which is not considered a water flow?
Artemon [7]
Rain maybe?? Cause it doesn’t flow??? It comes out of the sky?? Sorry if its wrong or sth
6 0
3 years ago
Other questions:
  • What did Democritus think that matter was made of?
    6·1 answer
  • How many moles of c6h14 contain 9.25 × 1024 molecules of c6h14?
    6·1 answer
  • When hydrocarbons are burned in a limited amount of air, both CO and CO2 form. When 0.430 g of a particular hydrocarbon was burn
    15·1 answer
  • What does the 2+ mean??
    10·1 answer
  • How many grams of Cl2 will be produced along with 250.0 kJ of heat in the following reaction? PCl5(g) + 87.9 kJ PCl3(g) + Cl2(g)
    6·2 answers
  • (b) What is the frequency of violet light with a wavelength of 433 nm?<br> Frequency<br> $
    14·1 answer
  • How much mass does 1 mol of O2 gas have?
    10·1 answer
  • Assume you mixed 5 µl of your cod fish homogenate with 195 µl working solution. The fluorometer displays a measurement of 12.2 µ
    15·1 answer
  • What would be one way to avoid static electricity? А) Dry cotton fabrics and synthetic fabrics separately. B) Run a metal clothe
    10·2 answers
  • What is consciousness? ...​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!