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
IgorC [24]
3 years ago
12

recommend an element use to fill bottles that contain ancient paper. the element should be a gas at room temperature, should be

denser than helium, and should not easily react with other elements.
Chemistry
1 answer:
Eduardwww [97]3 years ago
6 0

Okay so we are given these requirements:

element which can be used to stuff bottles that enclose ancient paper
must be a gas at room temperature
must be denser than helium
must not react with other elements

 

The only element that comes into my mind is:

<span>Argon</span>

You might be interested in
The equation 2al(s) + 3br2(l) → 2albr3(s) is a(n) ______________ reaction.
Svetach [21]
Combination
Hope this helps :)
7 0
3 years ago
If 2.27 moles of bromine react with excess phosphorus, how many moles of phosphorus tribromide will be produced
zalisa [80]

Answer:

The answer to your question is 1.51 moles of PBr₃

Explanation:

Data

moles of Br = 2.27

moles of PBr₃ = x

Balanced chemical reaction

                   2P   +   3Br₂  ⇒   2PBr₃

             Reactant      Element     Products

                   2                  P                 2

                   6                  Br                6

-Use proportions to find the answer

              3 moles of Br₂ ------------------  2 moles of PBr₃

         2.27 moles of Br₂ ------------------  x

               x = (2.27 x 2) / 3

               x = 4.54 / 3

              x = 1.51 moles

7 0
3 years ago
Read 2 more answers
Jeff has night vision goggles and can see people and animals even if it is pitch black outside. What type of electromagnetic wav
forsale [732]

Infrared radiation

Explanation:

The type of electromagnetic waves Jeff uses to make his goggles work are the infrared radiations.

Jeff is certainly using a night vision goggle to see in the dark . It senses infrared radiations

  • Infrared radiations are part of the electromagnetic spectrum.
  • Every hot objects gives off infrared radiations.
  • These googles have thermal imaging sensors that detects these radiations.
  • Naked eyes cannot see the radiations.
  • The heat emitted is a form of radiation called the infrared radiation.

learn more:

Electromagetic radiation brainly.com/question/6818046

#learnwithBrainly

7 0
3 years ago
A sample of a compound contains 32.0 g C and 8.0 g H. Its molar mass is 30.0 g/mol. What is the compound’s molecular formula
Grace [21]
The compound's molecular formula is C2H6. This is obtained by:
  
            mass             moles               divided by smallest moles
C          32g         32/12 = 2.67                                 1
H           8g           8/1.01 = 7.92                        approx. 3

Next, divide both terms by the smallest number of moles, 2.67. This gives 1 and 3. So the empirical formula is CH3 which has a molar mass of 15g/mol. Given the molar mass of the molecular formula as 30g/mole, we can calculate the factor by which to multiply the subscripts of CH3.

X = molar mass of molecular formula / molar mass of empirical formula = 30/15
X=2

So (CH3)2 is C2H6.
3 0
2 years ago
What is the maximum kinetic energy of an ejected electron if silver metal is irradiated with 224 nm light? The
Genrish500 [490]

Answer:The maximum kinetic energy KEe of ejected electrons (photoelectrons) is given by KEe=hf−BE KE e = h f − BE , where hf is the photon energy and BE is the binding energy (or work function) of the electron to the particular material.

Explanation:

3 0
3 years ago
Other questions:
  • Calculate the mass of glucose required to prepare 100ml of 60.0 mM glucose solution .
    15·1 answer
  • A 5 kg block
    11·1 answer
  • What accident led percy julian to discover the method to separate progesterone from soybean oil?
    12·1 answer
  • How many Al atoms are present in 2.5 moles of Al2O3
    5·1 answer
  • Why are ionic compounds electrically neutral
    13·1 answer
  • Select the pair that has the larger atom or ion listed first.
    10·1 answer
  • What does beaner mean
    11·1 answer
  • A nitrogen atom in N2 should have a
    7·1 answer
  • How many Na atomd are shown in the reactants​
    14·1 answer
  • URGENT WILL GIVE BRAINLEIST In two or more complete sentences explain how to balance the chemical equation,
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!