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Lady bird [3.3K]
3 years ago
9

Which part of a cell directs the cell's activities and holds its DNA?

Chemistry
2 answers:
neonofarm [45]3 years ago
4 0

Answer:

Nucleus is the answer

A micrograph of animal cells, showing the nucleus (stained dark red) of each cell. Known as the cell's “command center,” the nucleus is a large organelle that stores the cell's DNA (deoxyribonucleic 

rewona [7]3 years ago
3 0

Answer:

<em>nucleus </em><em> </em><em>is </em><em>the </em><em>part </em><em>of </em><em>a </em><em>cell </em><em>directs </em><em>the </em><em>cells</em><em> </em><em>Activities</em><em> </em><em>and </em><em>holds</em><em> </em><em>it's</em><em> </em><em>DNA</em>

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How many liters are present in 10 grams of H2O ?
Luba_88 [7]

Answer:

About 0.01

Explanation:

1 grams of H2O = 0.0010

0.0010 x 10 = 0.01

8 0
3 years ago
a compound has an empirical formula of CH2 what is the molecular formula if it's molar mass is 252.5 grams/mol
Goryan [66]

Empirical formula is the simplest ratio of components making up the compound. the molecular formula is the actual ratio of components making up the compound.

the empirical formula is CH₂. We can find the mass of CH₂ one empirical unit and have to then find the number of empirical units in the molecular formula.

Mass of one empirical unit - CH₂ - 12 g/mol x 1 + 1 g/mol x 2 = 12 = 14 g

Molar mass of the compound is - 252 .5 g/mol

number of empirical units = molar mass / mass of empirical unit

                                           = \frac{252.5 g/mol}{14 g}

                                           = 18 units

Therefore molecular formula is - 18 times the empirical formula

molecular formula  - CH₂ x 18 = C₁₈H₃₆                                            

molecular formula is C₁₈H₃₆  

8 0
3 years ago
What Element is found in column 16, period 2?
Art [367]
The answer is Sulfur.

8 0
3 years ago
Read 2 more answers
What is the iupac name of the following compound? <br><br> 2,2-dimethyl-4-ethylheptane
Lady bird [3.3K]

Answer:

The IUPAC name of the compound has already been given which is 2,2-dimethyl-4-ethylheptane.

Explanation:

The IUPAC (International Union of Pure and Applied Chemistry) is an authority in chemistry that provides a guideline and standardized methods in the naming of compounds formed from the periodic table.

In order the give an IUPAC name to a compound, certain steps needs to be followed, these includes:

--> Identify the functional group in the compound as this will form the suffix. For example if the functional group is an alkane the suffix will be -ane.

--> Identify the longest carbon chain (it may not be a straight chain) that contains the functional group. This forms the prefix. Example: if the longest carbon chain is 7 carbon atoms then the prefix will be hept-

--> All the carbons of the longest chain should be numbered

--> Identify branched groups on the chain and name them according to the number of carbon atoms. They usually end with -yl.

--> Finally, combine the elements of the name is a single word.

The structural formula of the IUPAC compound can be found in the attached file for a better understanding. The branched groups are circled.

4 0
3 years ago
A negatively charged particle is attracted to A. All particles that are located close by. B. Only particles that are large. C. N
Dahasolnce [82]

Answer:

D. Positively charged particles

Explanation:

Negatively charged particles are attracted to positively charged particles and repelled against negatively charged particles

6 0
3 years ago
Read 2 more answers
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