Chemistry Middle School

2012 Gynnin
Can you measure tenths of a gram with confidence using this balance?
yes
no

2012 GynninCan You Measure Tenths Of A Gram With Confidence Using This Balance?yesno

Answers

Answer 1

Yes

The accuracy to which we can measure a value using a given instrument is dependent on the instrument's least count. The least count of this instrument is 0.1 grams, or a tenth of a gram. Therefore, we may measure to the tenth of a gram with confidence. We cannot measure to the hundredth of a gram however.

Related Questions

Given:
N2 + 3H2 → 2NH3
In the chemical reaction, how many grams of nitrogen are needed to completely react with 24.3 grams of hydrogen? Use the periodic table to get the weights of the elements.
Drag each number to the correct location to complete the analysis.

Answers

Answer:

113.4g of N2

Explanation:

Step 1:

The balanced equation for the reaction.

N2 + 3H2 —> 2NH3

Step 2:

Determination of the mass of N2 and H2 that reacted from the balanced equation. This is illustrated below:

Molar mass of N2 = 2x14 = 28g/mol

Mass of N2 from the balanced equation = 1 x 28 = 28g

Molar mass of H2 = 2x1 = 2g/mol

Mass of H2 from the balanced equation = 3 x 2 = 6g

From the balanced equation above, 28g of N2 reacted with 6g of H2.

Step 3:

Determination of the mass N2 required to react with 24.3g of H2.

The mass of N2 required to react with 24.3g of H2 can be obtained as follow:

From the balanced equation above, 28g of N2 reacted with 6g of H2.

Therefore, Xg of N2 will react 24.3g of H2 i.e

Xg of N2 = (28 x 24.3)/6

Xg of N2 = 113.4g

Therefore, 113.4g of N2 is required to react completely with 24.3g of H2.

24.3g H2 × 1 mol H2/2.016g H2 × 1 mol N2/3 mol H2 × 28.014 g N2/1 mol N2 = 113g N2

which of the following elements would you expect to behave most like magnesium?
a) sodium
b) calcium
c) aluminum
d) scandium

Answers

calcium. this is because Mg and calcium is in the same group. hence, they have similar chemical properties

The element that would behave most likely magnesium is calcium. The correct option is b.

What is an element?

An element is a material whose atoms all contain the same number of protons: that is, all atoms of each element have the same amount of protons.

Elements are the most basic chemical forms and thus cannot be broken down chemically.

A chemical element is something that cannot be broken down further through any chemical reaction. Every element's atom encompasses a distinct number of protons.

A pure element is defined in chemistry as a substance whose atoms all (or almost all) have the same atomic number, or number of protons.

Beryllium and Calcium exhibit chemical reactions similar to Magnesium.

Thus, the correct option is b.

For more details regarding element, visit:

https://brainly.com/question/13025901

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How does water's dissolving power support life on Earth?

Answers

The dissolving power of water is very important for life on Earth. Wherever water goes, it carries dissolved chemicals, minerals, and nutrients that are used to support living things. Because of their polarity, water molecules are strongly attracted to one another, which gives water a high surface tension

Can anyone help need answer asap

Answers

Answer:

Rises, sinks

the correct answer is B

Answer:

rises, sinks

Explanation:

Hot magma rises because as the temperature increases, it expands and becomes less dense. As it reaches the top, it cools down and becomes more dense, which means it will sink. Therefore, hot magma rises and cool magma sinks in convection mantle mechanism.

2
The ware function
of
the particle is normalized. why?​

Answers

Answer:

The probability of finding the particle somewhere in the universe must be equal to 1.

Normalization of ψ(x,t): : is the probability density for finding the particle at point x, at time t. Because the particle must be found somewhere between x=-∞ and x=+∞ the wave. function must obey the normalization condition. Without this, the statistical interpretation would be meaningless.
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