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
Nataly [62]
3 years ago
12

Can someone please help with this-

Chemistry
1 answer:
Nonamiya [84]3 years ago
5 0
Ignition wires make it more accurate because it will cook it faster
stirrer would have the less results of fast
a sealed bomb may cook it fast but you would have to be careful and don't mess up
You might be interested in
Measurements of the heights of various plants in an experiment are called
Bess [88]

Answer:

Option 1 Data

5 0
3 years ago
Read 2 more answers
K2S(aq) + Co(NO3)2(aq) → CoS (?) + KNO3 (?)
Butoxors [25]

Answer:

a!

Explanation:

5 0
2 years ago
The value of ka for nitrous acid (hno2) at 25 ∘c is 4.5×10−4. what is the value of δg at 25 ∘c when [h+] = 5.9×10−2m , [no2-] =
LuckyWell [14K]
To get the value of ΔG we need to get first the value of ΔG°:

when ΔG° = - R*T*㏑K

when R is constant in KJ = 0.00831 KJ

T is the temperature in Kelvin = 25+273 = 298 K

and K is the equilibrium constant = 4.5 x 10^-4

so by substitution:

∴ ΔG° = - 0.00831 * 298 K * ㏑4.5 x 10^-4

        = -19 KJ

then, we can now get the value of ΔG when:

ΔG = ΔG° - RT*㏑[HNO2]/[H+][NO2]

when ΔG° = -19 KJ

and R is constant in KJ = 0.00831 

and T is the temperature in Kelvin = 298 K

and [HNO2] = 0.21 m & [H+] = 5.9 x 10^-2 & [NO2-] = 6.3 x 10^-4 m  

so, by substitution:

ΔG = -19 KJ - 0.00831 * 298K* ㏑(0.21/5.9x10^-2*6.3 x10^-4 )

       = -40

     
8 0
3 years ago
why does nitrogens lewis structure have 5 dots around it while nitrogens Bohr diagram has seven dots around it?
leonid [27]

Answer:

Bohr diagram shows electrons orbiting the nucleus. Nitrogen has 7 electrons orbiting the nucleus

Lewis structure is the simplified Bohr diagram. It only shows the electrons in the outer shell. For Nitrogen, 2 electrons are in the first shell. The remaining 5 electrons are in the outer shell.

Explanation:

Bohr diagram shows electrons orbiting the nucleus. Nitrogen has 7 electrons orbiting the nucleus

Lewis structure is the simplified Bohr diagram. It only shows the electrons in the outer shell. For Nitrogen, 2 electrons are in the first shell. The remaining 5 electrons are in the outer shell.

5 0
3 years ago
True or false 1. A scientific model is representation of a particular phenomena
cupoosta [38]

Answer:

True

Explanation:

The given statement is true.

A scientific model is defined as the mathematical and physical representation of a process or event. Scientists perform several observations or experiment and find a connection between them to prove a scientific finding.

A scientific model has the ability of explanatory power which helps to make things easier to understand using diagrams and consistency across contexts. Testing and prediction power in scientific models leads to strong predictions and able to convince people using an appropriate model.

Hence, the correct answer is "true".

4 0
3 years ago
Other questions:
  • What is the poh of an aqueous solution at 25.0 °c that contains 1.35 × 10-8 m hydroxide ion?
    9·1 answer
  • What will happen to the gas pressure as the temperature increases, if the amount and volume of the gas are kept constant?
    7·1 answer
  • what is the best description of weathering? A. breakdown of rocks through mechanical or chemical processes. B.when rocks layers
    5·1 answer
  • Which of the following statements is true?
    13·2 answers
  • If the male monster has a genotype of HH, will he have horns?<br> yes or no
    10·2 answers
  • Write the chemical equation for the reaction in which silver carbonate is formed
    11·1 answer
  • What is the relationship between the kinetic energy of molecules in an object and the object's temperature?
    6·1 answer
  • The trade route that connected India to markets in Europe and the Arabian
    5·2 answers
  • Energy in a vacuum travels by ___.<br> A. radiation<br> B. conduction<br> C. convection
    10·1 answer
  • 1. Consider the following: h2so4 2 naoh → na2so4 2 h2o if a 24. 0 ml sample of h2so4 (aq) was neutralized by 20. 0 ml of 0. 125
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!