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nignag [31]
3 years ago
6

Select the correct answer.

Chemistry
1 answer:
ser-zykov [4K]3 years ago
3 0

Answer:

Correct option is B. It shows the ratio of elements in the compound.

Explanation:

Empirical formula is the simplest form of the chemical formula. It shows the simplest ratio of atoms in compounds. It is determined by %age of each element.

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A device that sends electrical impulses to the heart to correct an irregular
IgorC [24]
A. A pacemaker

Hope this helps!
6 0
3 years ago
Which statement is correct about molarity and volume?
Oksana_A [137]

Answer:

Explanation:

If the choices are:

A. Molarity is defined as moles of solute per liter of solvent.

B. % by mass is defined as grams of solute per 100 g of solvent.

C. % by volume is defined as grams of solute per 100 L of solution.

D. Molarity is defined as moles of solute per liter of solution.

E. All of the above.

then the ans is E

7 0
3 years ago
What formula do you use to calculate the heat in a endothermic reaction?
leva [86]
Reactants + Energy → Products
I guess this is the answer
You’re welcome ;)
4 0
4 years ago
If the exact outer limit of an isolated atom cannot be measured, what criterion can we use to determine atomic radii? What is th
Alik [6]

Answer:

Calculate the atomic radii of two touching or overlapping atoms.

Explanation:

No doubt, we can't find the atomic boundary of a single atom, but when atoms are in the form of pairs it becomes very easy to measure the atomic radii of two and then dividing it by 2 to get an estimate of atomic radius of a single atom.

It is also called as covalent radius which is half of the total inter-nuclear distance between two same bonded atoms (Homo-nuclear).

If two adjacent mettalic ions are joined by such pairing then the same half of the distance between the nucleus is termed as metallic radii.

7 0
3 years ago
What are the properties of aluminium and their use​
Wewaii [24]

Answer: Answers are in bulleted lists.

Explanation: Aluminum...

  • has a low density
  • is non-toxic
  • has a high thermal conductivity
  • has excellent corrosion resistance
  • can be easily cast, whether it's machined or formed.

Uses:

  • Aeroplane Parts
  • Cans
  • Window frames
  • Beer kegs
  • Foils
  • Kitchen utensils

Have a great day! :)

6 0
2 years ago
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