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
rusak2 [61]
3 years ago
14

Eriq, a chemist, is running tests with four unknown elements. He has found that they all bond the same way, so he knows that the

y are in the same group on the periodic table of elements. The table shows other properties that Eriq observed.
A 4-column table with 4 rows titled properties of four unknown elements. The first column titled element number has entries 1, 2, 3, 4. The second column titled melting point has entries 266 K, 172 K, 387 K, 53 K. The third column titled boiling point has entries 332 K, 239 K, 457 K, 85 K. The fourth column titled phase at room temperature has entries liquid, gas, solid, gas.

These four elements are most likely in group

15.
16.
17.
18.
Chemistry
2 answers:
lana66690 [7]3 years ago
5 0
It would be element 17 would most likely go in that group
Zigmanuir [339]3 years ago
4 0

Answer:

the elements would go in group 17.

You might be interested in
How many electrons in the same atom can share the quantum number n = 2?
melisa1 [442]
With the principle quantum number being 2, the maximum number that can share this is 8. You can use the general formula 2n^2 to calculate this number (n=quantum level), or you can use the concept of quantum numbers (n, l, m, s) to justify this answer.
3 0
3 years ago
Consideras que Colombia es un país democrático? Justifica tu respuesta​
jasenka [17]

Answer:

si es un país democrático.

justificación: el estado colombiano es una democracia sólida y fuerte, con gran tradición dentro de la región, esta tiene como eje principal la generación de empleo, buscando que todos los colombianos tengan ingresos seguros un trabajo digno y pertenezca a la seguridad social.

Explanation:

esperó te sirva

6 0
3 years ago
A substance floats or sinks in another because of its relative
almond37 [142]
Its relative density causes objects to float or sink.
If the density of the substance is greater than the substance it is in, it will sink.
If the density is less than the substance it is in it will float.
5 0
3 years ago
50 POINTSSSSS PLZ HELPPPPPP NEED TO SHOW WORK!!!!
VashaNatasha [74]
(4 mol H2O) x (112 kJ / 3 mol H2O) = 149 kJ 

<span>(14.5 g HCl) / (36.4611 g HCl/mol) x (112 kJ / 3 mol HCl) = 14.9 kJ </span>

<span>(475 kJ) / (181 kJ / 2 mol HgO) x (216.5894 g HgO/mol) = 1137 g HgO </span>

<span>(179 kJ) / (181 kJ / 1 mol O2) x (31.99886 g O2/mol) = 31.6 g O2 </span>

<span>(145 kJ) / (112 kJ / 3 mol Cl2) x (70.9064 g Cl2/mol) = 275 g Cl2 </span>

<span>(14.5 g S2Cl2) / (135.0360 g S2Cl2/mol) x (112 kJ / 1 mol S2Cl2) = 12.0 kJ </span>

<span>CaCO3 + 2 NH3 → CaCN2 + 3 H2O; ∆H = –90.0 kJ </span>
<span>(798 kJ) / (90.0 kJ / 2 mol HN3) x (17.03056 g NH3/mol) = 302 g NH3 </span>

<span>(19.7 g H2O) / (18.01532 g H2O/mol) x (90.0 kJ / 3 mol H2O) = 32.8 kJ</span>
5 0
3 years ago
Tetrachloroethane is a valuable nonflammable solvent. It's percent composition is 14.31% carbon, 1.20% hydrogen, and 84.49% chlo
loris [4]
First take all percents and make them grams. Since you're not given a overall molar mass you can assume it is 100 and therefore the percents are their masses.
So you have 14.31g Carbon, 1.2g Hydrogen, and 84.49g of Chlorine. Next you divide each by their molar masses to get moles of each.

Carbon= <u>14.31</u>g       Hydrogen= <u>1.2</u>g         Chlorine= <u>85.49</u>g
               12.01g                         1.01g                         35.45g
          = 1.19moles                = 1.188moles          = 2.411moles

Next you divide each of those numbers by the smallest, in this case, Hydrogen.
Thus, 
    Carbon= <u>1.19moles</u>     Hydrogen= <u>1.188moles</u>   Chlorine= <u>2.411moles</u>
                   1.188moles                      1.188moles                   1.188moles 
             =1.002                               =1                                =2.02
These are all close enough to round, so your final empirical formula is: CHCl2
Hope that helps!!
 



6 0
3 years ago
Other questions:
  • Protons are positively charged and repel other protons. Which other particle is found in the nucleus and separates protons so th
    14·1 answer
  • What causes the change in pressure when a basketball is pumped up?
    6·1 answer
  • By which process do light rays pass through window glas
    12·1 answer
  • Which of the following is a correct statement about collision theory?
    13·2 answers
  • What kinds of compounds have the greatest difference between their melting point and their boiling point?
    14·1 answer
  • Cuales son los cambios que siempre envuelven cambios en la compocision de la sustancia?
    15·1 answer
  • Convert 16.8 L of nitrogen monoxide gas at STP to grams .
    12·1 answer
  • The day to day condition of atmosphere is known as
    13·2 answers
  • What causes an earthquake?
    7·1 answer
  • I need serious help with solving this problem.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!