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
MariettaO [177]
3 years ago
11

When a relationship is specified, related records will be displayed in a form's

Chemistry
2 answers:
ryzh [129]3 years ago
7 0

Answer: d

Explanation:

marusya05 [52]3 years ago
6 0
The answer should be d
You might be interested in
In which type of chemical reaction do two or more reactants combine to form one product, only?
xenn [34]
In decomposition, two or more reactant combine to form one product only.
8 0
3 years ago
Why is the melting of ice a physical change? It changes the chemical composition of water. It does not change the chemical compo
snow_lady [41]
It does not change the chemical in the composition of water. hope it helps
3 0
3 years ago
Read 2 more answers
How are the ion and isotope different from the atom?
puteri [66]
Ions have an extra or lost an electron. Isotopes have different numbers of neutrons.
7 0
3 years ago
One isotope of a metallic element has the mass number 67 and 37 neutrons in the nucleus. The cation derived from the isotope has
Anuta_ua [19.1K]
No. Of protons = mass no. - no. Of neutrons
No. Of protons = 67 - 37
= 30
No. Of electrons = 28

Zinc will have 30 protons and 28 electrons. So, it will have +2 charge

Symbol - Zn^+2
6 0
3 years ago
Read 2 more answers
51. The radius of gold is 144 pm and the density is 19.32 g/cm3. Does elemental gold have a face-centered cubic structure or a b
Serjik [45]

Answer:

Elemental gold to have a Face-centered cubic structure.

Explanation:

From the information given:

Radius of gold = 144 pm

Its density = 19.32 g/cm³

Assuming the structure is a face-centered cubic structure, we can determine the density of the crystal by using the following:

a = \sqrt{8} r

a = \sqrt{8} \times 144 pm

a = 407 pm

In a unit cell, Volume (V) = a³

V = (407 pm)³

V = 6.74 × 10⁷ pm³

V = 6.74 × 10⁻²³ cm³

Recall that:

Net no. of an atom in an FCC unit cell = 4

Thus;

density = \dfrac{mass}{volume}

density = \dfrac{ 4 \ atm ( 196.97 \ g/mol) (\dfrac{1 \ mol }{6.022 \times 10^{23} \ atoms})}{6.74 \times 10^{-23} \ cm^3}

density d = 19.41 g/cm³

Similarly; For a  body-centered cubic structure

r = \dfrac{\sqrt{3}}{4}a

where;

r = 144

144 = \dfrac{\sqrt{3}}{4}a

a = \dfrac{144 \times 4}{\sqrt{3}}

a = 332.56 pm

In a unit cell, Volume V = a³

V = (332.56 pm)³

V = 3.68 × 10⁷ pm³

V  3.68 × 10⁻²³   cm³

Recall that:

Net no. of atoms in BCC cell = 2

∴

density = \dfrac{mass}{volume}

density = \dfrac{ 2 \ atm ( 196.97 \ g/mol) (\dfrac{1 \ mol }{6.022 \times 10^{23} \ atoms})}{3.68 \times 10^{-23} \ cm^3}

density =17.78 g/cm³

From the two calculate densities, we will realize that the density in the face-centered cubic structure is closer to the given density.

This makes the elemental gold to have a Face-centered cubic structure.

3 0
3 years ago
Other questions:
  • PLEASE HELP!!
    13·2 answers
  • Which level of an energy pyramid has the most energy available?
    14·1 answer
  • how will the following systems react when an increase in pressure occurs? note all species are gases N2O4<-->2NO2
    15·1 answer
  • If Thomson was asked about Dalton's Atomic Theory, what would he say? (2+ sentences)
    8·1 answer
  • Which of the following is a characteristic of nonmetals?
    12·1 answer
  • I need 2 examples of chemical and physical change. *15 points
    14·1 answer
  • What is quantum physics​
    7·1 answer
  • What is the transfer of energy by a wave to the medium through which it travels
    14·1 answer
  • True or false: For a spontaneous redox reaction, the products are stronger oxidizing and reducing agents than the reactants.
    7·1 answer
  • What pressure is exerted by 2.500 kg of oxygen gas (O2) stored at 22°C in a 40.0-L cylinder? (R = 0.08206 L • atm/K • mol)
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!