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Lorico [155]
2 years ago
13

A student was asked to find the density of an unknown object. The student found that the mass of the object was 35.49 g. The stu

dent used water displacement to find the volume of the object. The graduated cylinder originally contained 45.1 mL of water. After the object was placed in the graduated cylinder, the volume was 52.3 mL. What is the density of the unknown object? Remember to round your answer to the correct number of significant figures and include the correct units. (Note: 1 mL = 1 cm3)
Chemistry
1 answer:
marusya05 [52]2 years ago
8 0

Answer:

4.29 /mL

Explanation:

density= mass/volume

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The chemical equation shown represents photosynthesis. Carbon dioxide plus A plus light with a right-pointing arrow towards B pl
astra-53 [7]

Answer: <u><em>Option B; It traps light energy and converts it into chemical energy.</em></u>

<h2>Explanation: This substance is chlorophyll. It is a pigment present in leaves of all plants. It absorbs light energy and provides it to carry out the process of photosynthesis. Light energy is converted into chemical energy, in form of NADPH and ATP, which can be used by plants for photosynthesis.</h2><h2></h2><h2>This pigment is present only in plants, so option A is incorrect.</h2><h2></h2><h2>This pigment only absorbs and transfers energy to other molecules, and is not associated with carbon dioxide directly, so option C and D are also incorrect.</h2>

3 0
2 years ago
PLEASE HELP!! (I will mark brainiest) (REAL ANSWERS ONLY PLEASE!)
Inessa [10]

The phosphate group of one nucleotide bonds covalently with the sugar molecule of the next nucleotide, and so on, forming a long polymer of nucleotide monomers. The sugar–phosphate groups line up in a “backbone” for each single strand of DNA, and the nucleotide bases stick out from this backbone. The carbon atoms of the five-carbon sugar are numbered clockwise from the oxygen as 1′, 2′, 3′, 4′, and 5′ (1′ is read as “one prime”). The phosphate group is attached to the 5′ carbon of one nucleotide and the 3′ carbon of the next nucleotide. In its natural state, each DNA molecule is actually composed of two single strands held together along their length with hydrogen bonds between the bases.

8 0
3 years ago
Read 2 more answers
Will give brainliest!!!!
Alekssandra [29.7K]

Answer:

Its B :)

Hope this helps

7 0
3 years ago
Numerator and denominator are Equal to one another? <br> I don’t get the concept
Alekssandra [29.7K]

It's like saying that if 1 meter is equal to 100 cm,

\frac{100cm}{1m}

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\frac{1m}{100cm}

You can base the answers from the chart

5 0
3 years ago
A total of 20.0 mL of sodium hydroxide (NaOH) was neutralized by 30.0 mL of 0.250 M hydrogen bromide (HBr). What was the concent
Karolina [17]

Answer:

0.375 M

Explanation:

NaOH(aq) + HBr(aq) ------------> NaBr(aq) + H2O(l)

Concetration of acid CA= 0.250M

Concentration of base CB= ????

Volume of acid VA= 30.0mL

Volume of base VB= 20.0mL

Number of moles of acid nA= 1

Number of moles of base nB= 1

CA VA/CB VB= nA/nB

CB= CAVAnB/VB nA

= 0.25× 30×1/20×1= 0.375 M

8 0
3 years ago
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