A balance is used to determine: my answer is a weight mass gravity

Answers

Answer 1

Answer:

Answer: A balance is used to determine accurate mass of substances.

Explanation: Electronic balance is used to measure the small to large mass of substance from miligrams to grams to kilograms according to their features. Differnt different Electronic balances are used on the basis of amount to be measure.

In pharmaceuticals , other laboratories , schools , colleges mainly electronic balance is used , as it measure accurate weight of the substances.

Answer 2

Answer: a balance is used to determine Mass

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What is the correct electron configuration for carbon?a. 1s22s22p2
b. 1s22s22p4
c. 1s22s22p5
d. 1s22s22p63s23p2

Answers

It is A; [He] 2s² 2p² is another way to put it

Your answer would be A.

Provide a balanced equation for the reaction between lead nitrate and sodium chloride

Answers

Answer:

Pb(NO3)2 + 2NaCl = PbCl2 + 2NaNO3

Explanation:

Lead nitrate is Pb(NO3)2

Sodium Chloride is NaCl

The basic reaction is:

Pb(NO3)2 + NaCl = PbCl2 + NaNO3

Now we need to balance the equation. Note that the lead nitrate contributes 2 (NO3) units, but there is only 1 NO3 on the product side. So start by adding a second NaNO3:

Pb(NO3)2 + NaCl = PbCl2 + 2NaNO3

Now we have 2 Na atoms on the right side, so add a "2" to the NaCl:

Pb(NO3)2 + 2NaCl = PbCl2 + 2NaNO3

This is starting to look good. Lets check the atom/unit counts on both sides of the equation:

Reactants Products

Pb 1 1

NO3 2 2

Na 2 2

Cl 2 2

The equation is now balanced. Pb(NO3)2 + 2NaCl = PbCl2 + 2NaNO3

Silicon dioxide and diamonds are best described as

Answers

macromolecules !!!!!!!

What volume will 20.0g of Argon occupy at STP?

Answers

Molar mass Argon = 39.948 g/mol

1 mol ------ 39.948 g
mol ----- 20.0 g

mol = 20.0 * 1 / 39.948

= 0.5006 moles

1 mol --------------------- 22.4 L ( at STP )
0.5006 moles ------------- L

L = 0.5006 * 22.4

= 11.21 L

hope this helps!

Atomic emission spectra are produced when the light emitted by an element passes through a prism. Which of the following statements is true regarding these spectra?A. All elements produce the same atomic spectra.
B. Elements produce continuous spectra.
C. Elements produce spectra with only a few distinct lines.

Answers

Option C: elements produce spectra with only few distinct lines.

The spectra are not continuos and are different for every element. This permits to identify elements.

Final answer:

Atomic emission spectra are unique to each element and consist of distinct lines representing different energy levels.

Explanation:

The correct statement regarding atomic emission spectra is option C: Elements produce spectra with only a few distinct lines.

The spectra produced by different elements are unique to each element, meaning that they have distinct patterns of lines.
These lines represent the different energy levels that electrons can occupy within the atom.
The specific pattern of lines in an atomic emission spectrum can be used to identify the element present in a sample of unknown composition.

Learn more about Atomic emission spectra here:

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Radioactive cobalt-60 is used in radiation therapy treatment. Cobalt-60 undergoes beta decay. This type of nuclear reaction is called(1) natural transmutation
(2) artificial transmutation
(3) nuclear fusion
(4) nuclear fission

Answers

The answer is (1) natural transmutation. When Co-60 undergoes beta decay (be it beta positive or beta negative), the product is another element (Fe or Ni). Transmutation is when an element turns into another element via a nuclear process. Since this occurs without the aid of another agent that causes the nuclear change (e.g. a neutron source), it is natural transmutation.

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