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
NeTakaya
3 years ago
13

Which element is a metalloid out of aluminum, arsenic, carbon, and helium?

Chemistry
1 answer:
Katyanochek1 [597]3 years ago
6 0

Answer:

arsenic

Explanation:helium is a gas and aluminum is a etal and carbon is not a maetalloid

You might be interested in
Need help with the 1st one
lutik1710 [3]

If I’m right this should be the answer

7 0
2 years ago
Can someone help me fill in the rest of the that don't have any words on top of the pictures. Please label the number then the w
QveST [7]
Tweezers 3 okay got it good
3 0
3 years ago
For the hypothetical reaction: A + B ---> 2C, write an expression that relates the disappearance of A and B to the appearance
forsale [732]

Answer:

Rate expression has been given below

Explanation:

According to the given equation, 1 molecule of A reacts with 1 molecule of B and produces 2 molecules of B at a time.

So, rate of disappearance of both A and B are one half of rate of appearance of B

Hence rate expression can be represented as:

Rate=\frac{-\Delta [A]}{\Delta t}=\frac{-\Delta [B]}{\Delta t}=\frac{1}{2}\frac{\Delta [C]}{\Delta t}

where \frac{-\Delta [A]}{\Delta t} is rate of disappearance of A, \frac{-\Delta [B]}{\Delta t} is rate of disappearance of B and \frac{\Delta [C]}{\Delta t} rate of appearance of C

8 0
3 years ago
What element glows in sign's when excited
ser-zykov [4K]

Answer:

The element that glows in signs is xenon.

Explanation:

Xenon is a chemical element with the symbol Xe and atomic number 54. It is a colorless, dense, odorless noble gas found in Earth's atmosphere in trace amounts. Xenon is used in flash lamps, arc lamps, and as a general anesthetic. Xenon emits a blue or lavenderish glow when excited by electrical discharge, it emits a band of emission lines that span the visual spectrum, but the most intense lines occur in the region of blue light, producing the coloration.

6 0
3 years ago
Is a strap of leather a pure substance
Andrew [12]
I'd say no because the only pure substances are elements
4 0
3 years ago
Read 2 more answers
Other questions:
  • At 650 mm hg a gas has a volume of 190 l what is its volume at standard pressure
    12·1 answer
  • The physical world around us behaves as it does partly because it’s made of a huge number of tiny molecules, each behaving rando
    13·1 answer
  • How many atoms are in KCI
    12·1 answer
  • The data listed below are for mechanical waves. Which wave has the greatest energy? amplitude = 7 cm; wavelength = 12 cm; period
    14·2 answers
  • A pure substance made up of molecules of the same kind of atoms is called...
    13·2 answers
  • How is the atomic theory that is accepted today different from daltons atomic theory?
    9·1 answer
  • How many iron atoms would be produced by 4.5g of Fe2O3 reacting eith an excess of magnesium
    6·2 answers
  • Calculate the [H3O+] of solutions a and b; calculate the [OH-] solutions c and d.
    13·1 answer
  • An interpretation of the results of many tests is called A) an experiment. B) a prediction D) a theory
    14·1 answer
  • A scoop of potassium oxide was placed in
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!