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Vsevolod [243]
3 years ago
15

Please help i don’t understand it and i’ll give 56 points

Chemistry
1 answer:
netineya [11]3 years ago
8 0
(Its Out Of Order)
Is this beaker the appropriate tool for measuring volume? - No
Pic.2 What does each graduation line stand for? - 1 mL
Pic.3 What does each graduation line stand for? - 1 mL
Pic.4 What does each graduation line stand for? 50 mL

Now for the volume I can't tell you the answer as I can't see it well,but take a sticky note or a piece of paper and but it at the bottom of the curved line that the water makes in the beaker.The meniscus is where it should be.
The meniscus is the curved upper surface of a liquid in a tube.
Then you're get your answer make.
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If the frequency of the photon increases what happens to the wavelength and energy?
kap26 [50]
The energy<span> per </span>photon<span> is proportional to the </span>frequency<span> of the radiation when considered as waves, ie inversely proportional to the </span>wavelength. Double the wavelength<span>, halve the </span>photon energy<span>. This means that long </span>wavelength<span> radiation (radio waves) has low </span>photon energy<span> and so does not penetrate matter.</span>
8 0
4 years ago
How many atoms are in 9.95 moles of iron?
zvonat [6]

Answer:

59.92 × 10²³ atoms are in 9.95 moles of iron

1.8 ×10²² molecules are in 0.03 moles of Carbon dioxide

1.19 moles are found in 7.20 x 10^23 atoms of platinum

6 0
3 years ago
An organic molecule consists of carbon, hydrogen, oxygen, nitrogen, and sulfur; the molecule is probably an amino acid. carbon d
ddd [48]

Answer:

A typical organic molecule that contains carbon hydrogen oxygen nitrogen and sulfur will be an amino acid.

Explanation:

Amino acid is the basic protein unit composed of the amino group, carboxylic group, and an alkyl group (which is specific for every amino acid). The R group or alkyl group is what gives the amino acid its identity. For example, the amino acid will be glycine if a Hydrogen atom is attached in place of the R group, and alanine if somehow the R group is replaced by a methyl group. Cystine is a typical example of an amino acid in which carbon, hydrogen oxygen, nitrogen, and sulfur are present. The structure of cystine is given below.

You can also get help from the following answer:

brainly.com/question/14583479

#SPJ4

8 0
1 year ago
Limestone (CaCO3) is decomposed by heating to quicklime (CaO) and carbon dioxide. Calculate how many grams of quicklime can be p
Harman [31]

Answer: 2800 g

Explanation:

CaCO_3(s)\rightarrow CaO(s)+CO_2(g)

According to avogadro's law, 1 mole of every substance weighs equal to molecular mass and contains avogadro's number 6.023\times 10^{23} of particles.

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}

Given mass = 5 kg = 5000 g

\text{Number of moles}=\frac{5000g}{100g/mol}=50moles

1 mole of CaCO_3 produces = 1 mole of CaO

50 moles of CaCO_3 produces =\frac{1}{1}\times 50=50moles of CaO

Mass of CaO=moles\times {\text{Molar mass}}=50moles\times 56g/mole=2800g

2800 g of CaO is produced from 5.0 kg of limestone.

3 0
3 years ago
What is the sum of kinetic and potential energy particles in matter
beks73 [17]
Mechanical I believe because this are things that move and don’t move so that would mean that it would be mechanical since mechanical means movement
5 0
3 years ago
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