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Sindrei [870]
3 years ago
15

Which unit could be used to measure volume? Need help

Chemistry
2 answers:
mafiozo [28]3 years ago
6 0

Answer:

milliliters and liters.

Explanation:

In the metric system of measurement, the most common units of volume are milliliters and liters.

polet [3.4K]3 years ago
3 0

Answer:

A

Explanation:

Because it milliliter and litre is used to measure volume not meter or millimeter

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Each chemical element has an atomic number and a mass number. the atomic number refers to the number of ___________________the e
creativ13 [48]
The atomic number tells us the number of protons and electrons.
The atomic mass tells us the weight of the nucleus, which is the amount of protons and neutrons
5 0
4 years ago
You observe 2 waves named alpha and beta. The alpha wave has a frequency of 5 Hz and the beta wave has a frequency of 2 Hz. Base
MAVERICK [17]

Answer:

shorter wavelength = alpha wave

Explanation:

Given that,

The alpha wave has a frequency of 5 Hz and the beta wave has a frequency of 2 Hz.

We need to compare the wavelengths of these two waves.

For alpha wave,

\lambda_1=\dfrac{c}{f_1}\\\\\lambda_1=\dfrac{3\times 10^8}{5}\\\\=6\times 10^7\ m

For beta wave,

\lambda_2=\dfrac{c}{f_2}\\\\\lambda_2=\dfrac{3\times 10^8}{2}\\\\=15\times 10^7\ m

From the above calculations, we find that the wavelength of the alpha wave is shorter than the wavelength of the beta wave.

8 0
3 years ago
Lithium and nitrogen react in a combination reaction to produce lithium nitride: 6Li (s) + N2 (g) → 2Li3N (s) In a particular ex
seraphim [82]

Answer: 6.71 g

Explanation: 6Li(s)+N_2(g)\rightarrow 2Li_3N

{\text{no of moles}}=\frac{\text{Given mass}}{\text{Molar mass}}

{\text {moles of lithium}}=\frac{4g}{6.914g/mol}=0.578moles

\text{moles of nitrogen}=\frac{4g}{28g/mol}=0.143moles

Limiting reagent is the reagent which limits the formation of product. Excess reagent is one which is in excess and thus remains unreacted.

Thus lithium is the limiting reagent and nitrogen is the excess reagent.

As can be seen from the balanced chemical equation,  6 moles of lithium reacts with 1 mole of nitrogen to give 2 moles of lithium nitride.

Thus 0.578 moles of lithium react with 0.096 moles of nitrogen.

6 moles of lithium give = 2 moles of lithium nitride

Thus 0.578 moles of lithium give=\frac{2}{6}\times {0.578}=0.19moles of lithium nitride.

Mass of lithium nitride Li_3N={\text {no of moles}}\times {\text {Molecular mass}}

Mass of lithium nitrideLi_3N={0.192moles}\times {34.83g/mol}=6.71g


8 0
3 years ago
How does the lens of a light microscope work?
ohaa [14]
D. the reflection of each concave lens makes the object appear larger
8 0
3 years ago
Read 2 more answers
The process in which an organic acid and an alcohol react to form an ester and water is known as esterification. Ethyl butanoate
egoroff_w [7]

Answer:

697 g

Explanation:

Ethanol (C₂H₅OH) and butanoic acid (C₃H₇COOH) react to form ethyl butanoate (C₃H₇COOC₂H₅) and water (H₂O).

C₂H₅OH + C₃H₇COOH → C₃H₇COOC₂H₅ + H₂O

The molar ratio of C₂H₅OH to C₃H₇COOC₂H₅ is 1:1. The moles of C₃H₇COOC₂H₅ produced from 6.00 moles of C₂H₅OH are:

6.00 mol C₂H₅OH × (1 mol C₃H₇COOC₂H₅/1 mol C₂H₅OH) = 6.00 mol C₃H₇COOC₂H₅

The molar mass of C₃H₇COOC₂H₅ is 116.16 g/mol. The mass corresponding to 6.00 mol is:

6.00 mol × (116.16 g/mol) = 697 g

7 0
3 years ago
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