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
nordsb [41]
3 years ago
9

PLEASE HELP! I'LL GIVE YOU BRAINLIEST!

Chemistry
2 answers:
atroni [7]3 years ago
4 0

Answer:

A.  Red, yellow, white, blue

Rainbow [258]3 years ago
4 0
A, Because It’s the only one with blue at the end and blue is the hottest star.
You might be interested in
A reaction is expected to produce 28.3 moles of hydrogen gas. If the hydrogen is collected at 297 K and 1.08 atm, what is the vo
Vinil7 [7]

Answer:

The correct answer is 639 L H₂

Explanation:

We use the ideal gas equation:

We have the following data:

n = 28.3 mol

T= 297 K

P= 1.08 atm

R= 0.082 L.atm/K.mol (gas constant)

We introduce the data in the gas equation to calculate the volume (V):

PV=nRT

⇒V =nRT/P = (28.3 mol x 0.082 L.atm/K.mol x 297 K)/(1.08 atm) = 638.2 L ≅ 639 L

Therefore, the correct option is  639 L H₂

4 0
3 years ago
Read 2 more answers
If you needed to make 100 mL of a 0.2 M fruit drink solution from the 1.0 M fruit drink
telo118 [61]

Answer:

We take 20.0 mL of the 1.0 M fruit drink solution and then add 80.0 mL of water to make 100 mL of a 0.2 M fruit drink solution.

Explanation:

Using the rule that: the no. of millimoles of a solution before dilution is equal to the no. of millimoles of the solution after the dilution. (MV) before dilution = (MV) after dilution. M before dilution = 1.0 M, V before dilution = ??? mL. M after dilution = 0.2 M, V after dilution = 100 mL. ∴ V before dilution = (MV) after dilution / M before dilution = (0.2 M)(100 mL) / (1.0 M) = 20.0 mL. So, we take 20.0 mL of the 1.0 M fruit drink solution and then add 80.0 mL of water to  make 100 mL of a 0.2 M fruit drink solution  

8 0
3 years ago
Which central atom hybridization would you expect in the series bh−4, ch4, nh+4?
hoa [83]

Expected:

sp³ in all three molecules.

<h3>Explanation</h3>

The hybridization of the central atom is related to the number of electron domains around that atom.

\begin{array}{c|c|c}\textbf{Number of Electron Domains} & \textbf{Hybridization}&\textbf{Example}\\ 2 & \text{sp} & \text{C as in CO}_2\\ 3 & \text{sp}^{2} & \text{C in H}_2\text{C}=\text{CH}_2\\ 4 &\text{sp}^{3} & \text{C as in CH}_4\end{array}.

What is an electron domain?

  • An atom bonded to the central atom counts as one electron domain. That atom counts as one electron domain regardless of the bond order. One single bond counts as one electron domain. One double bond counts as one electron domain. One triple bond counts as one electron domain.
  • A lone pair of electrons count as one electron domain.

How many electron domains in BH₄⁻, CH₄, and NH₄⁺?

  • BH₄⁻: Four H atoms are bonded to the central B atom. That ensures an octet for the central B atom. No lone pairs are needed. Four electron domains from the four bonded atoms. sp³ hybridization.
  • CH₄: Four electrons domains with four H atoms and no lone pair. sp³ hybridization.
  • NH₄⁺: Four electrons with four H atoms and no lone pair. sp³ hybridization.
6 0
3 years ago
20 points
9966 [12]

Answer:

I`m pretty sure it`s electrical tape.

Explanation:

8 0
3 years ago
HURRY PLS!<br> A wave has a wavelength of 915 meters. what is the frequency of the light?
laiz [17]

Answer:

327.8689 (Hz)

0.3279 (KHz)

0.0003 (MHz

0 (GHz)

4 0
3 years ago
Other questions:
  • True or False?
    15·2 answers
  • What is a substance?
    10·2 answers
  • Answer the following question: Ethanol, C2H5OH, is considered clean fuel because it burns in oxygen to produce carbon dioxide an
    10·1 answer
  • WILL MARK AS BRAINLIEST
    9·2 answers
  • Density Calculations
    11·1 answer
  • Why does nitrogen have the lowest volume in the atmosphere on average?
    10·1 answer
  • Determine which of the following data points is an outlier, on the graph below.
    11·1 answer
  • 1.Nuclear charge decreases as the atomic number increases.Immersive Reader
    9·1 answer
  • Need help on this question
    9·1 answer
  • A chemist makes four successive ten-fold dilutions of 1.0x10⁻⁵ M HCl. Calculate the pH of the original solution and of each dilu
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!