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
ANEK [815]
3 years ago
6

What is Alfunim second element ? Please help !!!

Chemistry
1 answer:
Vikentia [17]3 years ago
3 0
Aluminum? It is a chemical element with the symbol Al and atomic number 13. It is a silvery-white, soft, non-magnetic and ductile metal in the boron group. By mass, aluminium is the most abundant metal in the Earth's crust and the third most abundant element
You might be interested in
Balance the chemical equation below using the smallest possible whole number stoichiometric coefficients.
pogonyaev
I think it's balanced ?
There are two H's in the both side
And one P in the both side
7 0
1 year ago
HELP ME || WILL MARK BRAINLEST ||Which product could contain a substance formed by Reaction B?
lawyer [7]

Answer:

Antacid

Explanation:

Hope this helps:)

7 0
3 years ago
Read 2 more answers
Astudent prepareda calibration curve by plotting absorbance of the standards against the [FeSCN2+] molar concentration (M). The
Nuetrik [128]

Answer:

Explanation:

Chemistry 1B Experiment 7

1-3 5.0 1.5 3.5

Part 2: Determining the equilibrium constant.

Label 5 medium-sized test tubes. Table 7.2 shows the amounts of 2.00 × 10–3

M

Fe(NO3)3 (in 1 M HNO3) solution, 2.00 × 10–3

M KSCN solution, and purified water

that should be added to each tube. Pipet the approximate amount of each solution into

each tube. (Record the exact amount of each solution that you actually add. You will

need to use these actual amounts in your calculations.)

Obtain five separate small pieces of parafilm. Close the top of each test tube with

the parafilm. Mix each solution thoroughly by inverting the test tube several times.

Record your observations.

Measure and record the absorbance of each solution at the 447 nm.

Table 7.2 Composition of solutions for determining the equilibrium constant.

Test Tube

Volume of

2.00 × 10–3

M Fe(NO3)3

in 1 M HNO3 (mL)

Volume of

2.00 × 10–3

M KSCN

(mL)

Volume of

purified water

(mL)

2-1 5.0 1.0 4.0

2-2 5.0 2.0 3.0

2-3 5.0 3.0 2.0

2-4 5.0 4.0 1.0

2-5 5.0 5.0 none

Calculations

Part 1. Graphing the relationship between absorbance and [FeSCN2+].

Assuming that “all” of the SCN–

ions have been converted to FeSCN2+ ions,

calculate [FeSCN2+] in each of the solutions in Part 1. For example, in test tube 1-2, 1.0

mL of a 2.00 × 10–3

M KSCN solution was diluted to 10.0 mL. The concentration of

SCN–

that results from this dilution is the one to use for determining [FeSCN2+].

Because of the 1:1 stoichiometry, that initial concentration of SCN– is equal to

[FeSCN2+].

Plot a full-page graph of the absorbance against the concentration of FeSCN2+ in

all standard solutions. Use a ruler to draw the best straight line that comes closest to each

of your five data points. Your line should pass through (0 M, 0). (Why?) This graph is

your calibration curve. When you measure the absorbance of a solution that contains an

unknown concentration of FeSCN2+ ions, you can use this calibration curve to determine

the unknown concentration

6 0
3 years ago
Cu2o+C➡Cu+Co2 what is the balance chemical equation
denis23 [38]
<span>4 Cu2O + C2 = 8 Cu + 2 CO2  </span><span>Reaction type: single replacement i hope this hopes

</span>
5 0
3 years ago
What type of star has an absolute brightness of 1 and a surface temperature around 7,500 ∞C
Ede4ka [16]
I think it is a white dwarf star
3 0
3 years ago
Other questions:
  • Which is an example of a highly unstable isotope that is often used in fission reactions?
    15·2 answers
  • Which type of rock can melt to become magma?
    6·2 answers
  • Using complete sentences, explain how to predict the products and balance the reaction for the combustion of butane,
    10·2 answers
  • Why it is so difficult to discover superiority of nature in creation and maintaining chemical bonds between elements?
    9·1 answer
  • Which of the following cannot be the chemical symbol for an element
    14·1 answer
  • What is the simplest form of matter that can exist under lab conditions
    10·1 answer
  • How many moles of electrons is required to deposit 5.6g of iron from a solution of iron (2) tetraoxosulphate(6)
    10·1 answer
  • "Show a general equation for polymerisation"
    6·1 answer
  • HELP 20 POINTS
    14·1 answer
  • Determine the empirical and molecular formula for a compound containing 26.1
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!