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3 years ago

Determine from the balanced chemical reaction if

Chemistry

1 answer:

Anna007 [38]3 years ago

8 0

Answer:

The equation is balanced

Explanation:

Before a equation can be said to be balanced the number of mole at the reaction side must be equal to number mole at the product side

Let's start with Zn at the reactant side 4 moles of Zn reacts and 4 moles of Zn was obtained from the product side which makes it balanced

Let's take HNO3

For H,10 moles react and 10 moles was obtained in the product side

For N,10 moles react and 8 moles was obtained initially and 2 moles was obtained as well which makes it 10 moles and it makes it balanced

For O,30 moles react and after calculating the total amount of O at the product side it was observed to be 30 which indicates that the equation is balanced...

The equation is absolutely well balanced

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When atoms gain electrons, they can become larger, because the addition of an electron increases electrostatic repulsion.

astra-53 [7]

Answer:True

Explanation: An anion has a larger radius than a neutral atom because it gains valence electrons. There are added electron/electron repulsions in the valence shell that expand the size of the electron cloud, which results in a larger radius for the anion.

hit the crown for me pls :)

Have a great day

6 0

2 years ago

Complete each of the definitions with the appropriate phrase. Precision means that measurements are close to Accuracy means that

sergiy2304 [10]

Answer: Precision means that measurements are close to each other . Accuracy means that measurements are close to accepted value

Explanation:

Precision refers to the closeness of two or more measurements to each other.

For Example: If we weigh a given substance five times and you get 5.0 kg each time. Then the measurement is very precise.

Accuracy refers to the closeness of a measured value to a standard or known value.

For Example: If the mass of a substance is 5.0 kg and one person weighed 4.9 kg and another person weighed 3.9 kg. Then, the weight measured by first person is more accurate.

Thus Precision means that measurements are close to each other . Accuracy means that measurements are close to accepted value.

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3 years ago

A centimeter and millimeter differ from each other by a factor of _____ ?

Liono4ka [1.6K]

The answer is: "10" .
_______________________________________________________________
" A centimeter and millimeter differ from each other by a factor of "10" .
_______________________________________________________________
Note:
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100 cm = 1 m

1000 mm = 1m

____________
100 * (10) = 1000 .
_________________
The answer is: "10".
__________________________________________________________
" A centimeter and millimeter differ from each other by a factor of "10".
__________________________________________________________

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3 years ago

Which phrases describe clastic sedimentary rocks? Check all that apply.

Romashka [77]

Explanation:

A clastic sedimentary rock is a rock that is formed from pre-existing rock materials and minerals. This materials have been transported to their new positions by the agents of denudation.

Clastic sedimentary rocks are made up of rock fragments predominantly.
The matrix is usually remnants of other rocks.
A cementing material can form between clasts and holds them in place. Cements are usually iron oxides, calcite e.t.c.
These rock types are usually formed from mechanincal weathering of rocks
Mechanical weathering breaks down rocks into chunks.
Examples are breccia, conglomerates, e.t.c.

Learn more:

Sedimentary rocks brainly.com/question/2740663

#learnwithBrainly

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3 years ago

How much a material takes time to burn?

Nat2105 [25]

(a)- Time

(b)- Heat produced(i guess)

(c)- Material

this is what I think, hope it helps

5 0

3 years ago