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
nikklg [1K]
3 years ago
6

11. A student is studying guppies, a type of fish. The student learns

Chemistry
1 answer:
STALIN [3.7K]3 years ago
5 0
I’m not for sure ik really sorry
You might be interested in
A solution of which of the following coordination compounds will form a precipitate when treated with aqueous AgNO3?
lidiya [134]

Answer:

[Cr(NH3)6.]C13

Explanation:

Alfred Werner's coordination theory (1893) recognized two kinds of valency;

Primary valency which are nondirectional and secondary valency which are directional.

Hence, the number of counter ions precipitated from a complex depends on the primary valency of the central metal ion in the complex.

We must note that it is only these counter ions that occur outside the coordination sphere that can be precipitated by AgNO3.

If we consider the options carefully, only [Cr(NH3)6.]C13 possess counter ions outside the coordination sphere which can be precipitated when treated with aqueous AgNO3.

3 0
2 years ago
8. What is the heat of reaction when hydrogen and oxygen combine to form water?
valina [46]

Answer:

The heat of reaction when hydrogen and oxygen combine to form water is :

<u>C. 571.6 kJ</u>

Explanation:

Enthalpy Change = The enthalpy change for the formation of 1 mole of the substance from their standard state is called the enthalpy of formation.

This is intensive quantity as it is fixed for 1 mole .

Intensive properties = Those properties which are independent on the amount of the substance are intensive properties.

The value of these quantities does not get halve if you divide the substance into two equal parts. example , density, refractive index.

However , the enthalpy of reaction is extensive. Because on increasing the amount the value of the enthalpy also get doubles

Hence for this reaction :

2H_{2}(g)+O_{2}\rightarrow 2H_{2}(l)

Its value is -285.8 kJ for 1 mole

And here two moles are present . so the value of molar enthalpy is:

-285.8 x 2 = -571.6 kJ

8 0
3 years ago
Answer the following questions:
Vera_Pavlovna [14]

Answer:

fdfdgiukjgrguhjnfvthhhdqddwsvhjjj

4 0
2 years ago
Read 2 more answers
A balloon full of air has a volume of 1.00L at a temperature of 23 °C. What is the balloon's volume at 33°C?
igomit [66]

Answer:

V2= 1.03L

Explanation:

Start off with what you are given.

V^1: 1.00L

T^1: 23°C

V^2?

T^2: 33°C

If you know your gas laws, you have to utilise a certain gas law called Charles' Law:

V^1/T^1 = V^2/T^2

Remember to convert Celsius values to Kelvin whenever you are dealing with gas problems. This can be done by adding 273 to whatever value in Celsius you have.

(23+273 = 296)     (33+273 = 306)

Multiply crisscross

1.00/296= V^2/306

296V^2 = 306

Dividing both sides by 296 to isolate V2, we get

306/296 = 1.0337837837837837837837837837838

V2= 1.03L

5 0
3 years ago
In the nucleus with the protons together their sum is the
galina1969 [7]

Answer:

the nucleus is called the mass number and, expressed in amu, is approximately equal to the mass of the atom

Explanation:

6 0
3 years ago
Read 2 more answers
Other questions:
  • The Lewis structure of an oxygen atom should have _____________ dots drawn around the symbol .The Lewis structure of a calcium a
    11·1 answer
  • The week of Feb. 29, 2016, PBS aired a documentary on sending humans halfway to space in the late 1950’s using balloons. They fi
    12·1 answer
  • What does the variable A stand for in the Arrhenius equation? A. activation energy B. frequency factor C. rate constant D. react
    13·1 answer
  • Rutherford and his colleagues fired a beam of small, positively charged alpha particles at thin gold foil. Some of these alpha p
    14·1 answer
  • How do u get the formulae for sodium oxide​
    10·2 answers
  • Which type of energy depends on the distance between two particles and the charge of each particle? A. Electrical potential ener
    11·1 answer
  • If I have one mole of cupcakes, how many cupcakes do I have?
    14·1 answer
  • the presidential inauguration is free to watch with or without paying ror traditional tv service. Why is this important?
    9·2 answers
  • Are all cells the same? Give examples
    8·2 answers
  • Consider the reaction: NaNO3(s) + H2SO4(l) NaHSO4(s) + HNO3(g) ΔH° = 21.2 kJ
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!