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
zaharov [31]
3 years ago
5

HELP ASAP

Chemistry
1 answer:
lora16 [44]3 years ago
5 0

Answer:

the correct answer is D

Explanation:

The density of gold is 19.4g/cm

You might be interested in
Calculate the percentage of water of crystallisation in MgSO⁴ 7H²O
Bas_tet [7]

Answer:

Formula of EPSOM salt = MgSO4.7H2O

molecular mass of MgSO4.7H2O = atomic mass of Mg + atomic mass of S + 4 × atomic mass of O + 7 { 2 × atomic mass of H + atomic mass of O }

= 24 + 32 + 4× 16 + 7{ 2 × 1 + 16 } g/mol

= (24 + 32 + 64+ 126 ) g/mol

= 246 g/mol

molecular mass of total water = 7 × ( 2× atomic mass of H + atomic mass of O )

= 7 × 18 = 126 g/mol

now ,

% mass of H2O in EPSOM salt = {total molar mass of H2O/molar mass of Epsom salts }× 100

= {126/246 } × 100

= 12600/246

= 51.21 %

Explanation:

i have done it hope it helps

7 0
3 years ago
Read 2 more answers
At which temperature and pressure will a sample of neon gas behave most like an ideal gas?
Andreas93 [3]

Answer:

At STP, 760mmHg or 1 atm and OK or 273 degrees celcius

Explanation:

The standard temperature and pressure is the temperature and pressure at which we have the molecules of a gas behaving as an ideal gas. At this temperature and pressure, it is expected that the gas exhibits some properties that make it behave like an ideal gas.

This temperature and pressure conform some certain properties on a gas molecule which make us say it is behaving like an ideal gas. Ordinarily at other temperatures and pressures, these properties are not obtainable

Take for instance, one mole of a gas at stp occupies a volume of 22.4L. This particular volume is not obtainable at other temperatures and pressures but at this particular temperature and pressure. One mole of a gas will occupy this said volume no matter its molar mass and constituent elements. This is because at this temperature and pressure, the gas is expected to behave like an ideal gas and thus exhibit the characteristics which are expected of an ideal gas

4 0
3 years ago
Read 2 more answers
Structural formula for 4-nonene and fluorine gas
goldenfox [79]
I THINK it's <span>1,1-Difluorononane, or </span>C_9H_{18}F_2.<span>
</span>

6 0
3 years ago
Read 2 more answers
Matter can undergo chemical reactions and nuclear reactions. Which statement is true only for nuclear reactions?
Irina18 [472]

Answer:

B - The energy of reactants is conserved.

D - the nuclei of atoms changes completely ( if that's the option)

6 0
1 year ago
Which solid conducts electricity most efficiently?
irina1246 [14]

We see that is the <em>structure </em>of graphite it possess these attributes.

Graphite

Option A

<h3>Electricity</h3>

Generally, he conduction of electricity is do by elements with free talent electron after bonding.

Therefore, it is save to say that the <em>solid </em>that possess the attributes that allows for conduction will end up conducting.

Hence, we see that is the <em>structure </em>of graphite it possess these attributes.

Graphite

Option A

For more information on Electricity visit

brainly.com/question/9383604

4 0
2 years ago
Other questions:
  • I have a very question what is the viruz more dangerous for the word
    15·1 answer
  • Gas is trapped inside of a cell with volume 140 m3. The gas exerts 7600 Pa of pressure against the walls of the cell. A machine
    8·1 answer
  • A scientist who studies the origin of living organisms through fossils
    11·2 answers
  • An ion has a charge of 2- and 18 electrons.
    14·1 answer
  • If mass increases what must happen to the force in order to achieve the same change in motion
    9·1 answer
  • When the following redox equation is balanced with smallest whole number coefficients, the coefficient for the iodide ion will b
    12·1 answer
  • Which of the following is a metal? *<br><br> sulfur<br> nitrogen<br> silicon<br> francium
    11·1 answer
  • How do scientists use sonar to study earth's oceans?
    9·1 answer
  • What is the reaction of Dimethylamamine + acetic acid
    5·1 answer
  • ou discover that the complex decomposes in water. When 0.1000 g of the complex is dissolved in water with excess NaHg(SCN)4, all
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!