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
Tpy6a [65]
3 years ago
5

 what is 19.8-17.1

Chemistry
2 answers:
Ostrovityanka [42]3 years ago
7 0

Answer: it should be 2.8

Explanation:

irina1246 [14]3 years ago
7 0
It’s 2.7 although isn’t that math, not chemistry
You might be interested in
A t-test is suitable for
blagie [28]

Answer:

Explanation:

A t-test is a type of inferential statistic used to determine if there is a significant difference between the means of two groups, which may be related in certain features. The t-test is one of many tests used for the purpose of hypothesis testing in statistics. Calculating a t-test requires three key data values.

7 0
3 years ago
A series of chemicals were added to some AgNO3(aq). NaCl(aq) was added first to the silver nitrate solution to produce a precipi
OLEGan [10]

Answer:

First, precipitate of AgCl is formed. Second, a soluble complex of silver and ammonia is formed. Third, AgCl is reproduced due to disappearance of ammonia complex in presence of HNO_{3}.

Explanation:

In presence of NaCl, AgNO_{3} forms an insoluble precipitate of AgCl.

Reaction: Ag^{+}(aq.)+Cl^{-}(aq.)\rightarrow AgCl(s)

In presence of NH_{3}, AgCl gets dissolved into solution due to formation of soluble [Ag(NH_{3})_{2}]^{+} complex.

Reaction: AgCl(s)+2NH_{3}(aq.)\rightarrow [Ag(NH_{3})_{2}]^{+}(aq.)+ Cl^{-}(aq.)

In presence of HNO_{3}, [Ag(NH_{3})_{2}]^{+} complex gets destroyed and free Cl^{-} again reacts with free Ag^{+} to produce insoluble AgCl

Reaction: [Ag(NH_{3})_{2}]^{+}(aq.)+2H^{+}(aq.)+Cl^{-}(aq.)\rightarrow AgCl(s)+2NH_{4}^{+}(aq.)

4 0
3 years ago
An insulated tank contains air at 0.5 atm pressure and 298K. The outside pressure is at 1 atm pressure and 298K. A valve is open
aalyn [17]

Answer:

The temperature of the gas after it is filled is 596 K

Explanation:

According to Gay-Lussac law, the pressure of a gas mass is directly proportional to temperature to a constant volume. That means than if pressure rise, the temperature too. We can assume then the volume is constant because the tank is isolated. The tank will be full when pressure will be in equilibrium, that means when pressure will be 1 atm because it is environment pressure. Using the following equation:

P1 /T1 = P2 /T2 and replacing, T2 = P2  *T1 / P1 = 1 atm * 298K / 0.5 atm = 596 K.

I hope my answer helps you

4 0
3 years ago
PLEASE HELP MEEEE<br> Africa<br><br> Asia (India)<br><br> Australia<br><br> Europe
stellarik [79]

Answer:

Australia is correct

Explanation:

Because it is not attached to any other place

3 0
3 years ago
Read 2 more answers
The ir spectrum of which type of compound will not show evidence of hydrogen bonding?
MArishka [77]
The IR spectrum of aldehyde compound will not show evidence of hydrogen bonding. The Infrared (IR) spectrum involves the interaction of infrared radiation with matter. It is used to study and identify chemicals and their properties.  Evidence of hydrogen bonding is not shown due to lack of molecular contact.
8 0
3 years ago
Other questions:
  • What is the energy change if 84.0 g of calcium oxide (CaO) reacts with excess water in the following reaction?
    6·1 answer
  • Scientists infer that early North American humans hunted the mastodon. Carbon-14 dating of the rib bone indicates that 2.4 half-
    12·1 answer
  • Determine the grams of sodium chloride produced when 10.0g of sodium react with 10.0g of chlorine gas according to the equation:
    13·1 answer
  • Which of the following is a unit of mass?
    5·1 answer
  • What are the four layers of earth made of?
    9·1 answer
  • Calculate the number of hydrogen atoms in a 110.0 sample of tetraborane(B4H10) . Be sure your answer has a unit symbol if necess
    11·1 answer
  • How is biodiversity related to niches?
    11·2 answers
  • If water was used to rinse the burette used to dispense the hydrochloric acid solution, how would this affect
    11·1 answer
  • 49. Rock, metal, wood, glass, animals, and plants are all forms of what?
    10·2 answers
  • Is gunpowder a homogenous mixture or a heterogenous mixture? Explain why.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!