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
Svetllana [295]
3 years ago
12

Isotopes of an element have Select one: a. the same atomic number and same atomic weight. b. the same atomic number but differen

t atomic weights. c. different atomic numbers but the same atomic weight. d. different atomic numbers and different atomic weights.
Chemistry
1 answer:
Levart [38]3 years ago
8 0

Answer:

Option B same Atomic number and Different Atomic weight

Explanation:

Isotope are those inwhich no of protons (Atomic number) is same and mass number (A=n+Z) is different

Examples: Cl-35& Cl-37

And O-16& O-18

And option C corresponds to Isobars with same mass number and different atomic number.

You might be interested in
Classify the following as either solutions or colloids. If a colloid, name the type of colloid and identify both the dispersed a
aev [14]

Answer:

a. glucose in water( solution)

b. smoke in air (colloids)

c. carbon dioxide in air (solution)

d. milk( colloids)

Explanation:

A solution is said to be formed when a solute dissolves in a solvent to form a homogeneous mixture. The solute particles are less than 10^-9m in size. Familiar solutions are those where the solute are dissolved in a liquid solvent. When the liquid water, the solution is known as an aqueous solution. A typical example is (glucose in water). In some other cases, the apparent solution of a solute in a solvent is accompanied by a chemical reaction and this is often known as a chemical reaction. A typical example is (carbon dioxide in air).

Colloids are also known as false solutions. Here, the individual solute particles are larger than the particles of the true solution, but not large enough to be seen by the naked eye. When a light beam is placed beside a beaker containing a colloid, the light rays of the beam can be clearly seen. This shows that it exhibits the Tyndall effect while a solution dosent exhibit such.

In a colloid, the liquid solvent is more appropriately know as the DISPERSION medium while the solid solute particles constitute the DISPERSED substance. This can either be solid, liquid or gas.

For example:

--> smoke in air : Dispersion medium is gas while the dispersed substance is solid.

--> milk: Dispersion medium is liquid while the dispersed substance is liquid.

7 0
3 years ago
Science 6th grade please help me :)
Gnom [1K]
I’m pretty sure the answer is D :)
6 0
3 years ago
Read 2 more answers
Assume that the pressure inside of the 1 liter balloon is 200,000 Pa, what is the explosive energy in the inside the balloon? Ex
AysviL [449]

Answer:

200 Joules is the explosive energy in the inside the balloon. And that is  9.523\times 10^{-5}1 lb of TNT.

Explanation:

Pressure=\frac{force}{Area}=\frac{Force\times distance}{Area \times distance}=\frac{Energy}{Volume}

Volume of the balloon = V = 1 L = 0.001 m^3

Pressure inside the balloon ,P= 200,000 Pa =200,000 N/m^2

Explosive energy in the inside the balloon be E.

E = Pressure × Volume

E=200,000 N/m^2\times 0.001 m^3=200 Joules

1 lb of TNT = 2.1\times 10^6 J

200 Joules = 200\times \frac{1}{2.1\times 10^6 }1 lb of TNT

= 9.523\times 10^{-5}1 lb of TNT

5 0
3 years ago
When Raymond observes certain natural phenomena, he often forms ideas about their causes and effects. Suppose that Raymond surmi
rodikova [14]

Answer:

true

Explanation:

5 0
2 years ago
Read 2 more answers
A pure substance that contains more than one atom is called a(n)...
gladu [14]

<u><em>Answer:</em></u>

  • A pure substance that contains more than one atom is called a compound.

<u><em>Explanation:</em></u>

  • Compounds are formed by combination of atoms by a fixed ratio. They have their own characteristic features.
  • Pure substances are further broken down into elements and compounds. A compound can be destroyed by chemical means. It might be broken down into simpler compounds, into its elements or a combination of the two.

<u><em>Example </em></u>

  • H2SO4 which  is formed by combination of three different atoms like H, S and O.
6 0
3 years ago
Read 2 more answers
Other questions:
  • Calculate the density, in grams per liter, of hydrogen sulfide gas, h2s, at 56oc and 967 mmhg. [1] g/l
    8·1 answer
  • How does energy transform during solar power process
    5·1 answer
  • A chemist is using a solution of HNO3 that has a pH of 3.75. What is [OH− ] for the solution?
    9·2 answers
  • Write a balanced chemical equation for the standard formation reaction of gaseous formaldehyde CH2O
    10·1 answer
  • What is the empirical formula of a compound that is 40% sulfur and 60% oxygen by weight?
    6·1 answer
  • HELP SOMEONE PLEASE I WILL GIVE BRAINLIST I NEED IT NOW PLZ! LOOK AT THE IMAGE ABOVE TO ANSWER
    14·1 answer
  • Do you expect the ionization energies of anions of group 17 elements to be lower than, higher than, or about the same for neutra
    13·1 answer
  • In discharge tube gases are good conductors of electricity at very low pressure and high
    13·1 answer
  • What is the molarity of a NaOH solution if 48.0 mL of a 0.220 M H2SO4 solution is required to neutralize a 25.0-mL sample of the
    9·1 answer
  • Complete and balance the following acid-base reaction equation ______HNO3 + ______ Mg(OH)2 ------&gt;
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!