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2 years ago

12

Vitamin C is important in the formation collagen, a protein that holds together the connective tissue

1 answer:

emmainna [20.7K]2 years ago

6 0

Hydrogen bond

explaination: Hydrogen bonding is present because hydrogen from Vitamin C is forcefully attracted to oxygen of carbon dioxide. Dispersion is another present intermolecular force because it occurs between any two adjacent molecules.

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How many particles of Na are there in 1.43g of a molecular compound with a Molar mass of 23g?

Olin [163]

Answer:

3.74 x 10²² particles

Explanation:

Given parameters:

Mass of compound = 1.43g

Molar mass of compound = 23g

Unknown:

Number of particles of sodium = ?

Solution:

To find the number of particles of Na in the compound, we need to obtain the mass of sodium from the total mass given;

Mass of sodium = $\frac{molar mass of Na}{molar mass of compound} x mass of sample$

= $\frac{23}{23} x 1.43g$

= 1.43g

Now find the number of moles of this amount of Na in the sample;

Number of moles = $\frac{mass}{molar mass}$ = $\frac{1.43}{23}$ = 0.062mole

Now;

1 mole of substance = 6.02 x 10²³ particles

0.062 mole of substance = 0.062 x 6.02 x 10²³ particles

= 3.74 x 10²² particles

7 0

3 years ago

What molecules are found in all or almost all organic compounds?

klemol [59]

D. <span>carbon and hydrogen</span>

5 0

3 years ago

Read 2 more answers

A 360. g iron rod is placed into 750.0 g of water at 22.5°C. The water temperature rises to 46.7°C. What was the initial tempera

Grace [21]

Answer: The initial temperature of the iron was $515^0C$

Explanation:

$heat_{absorbed}=heat_{released}$

As we know that,

$Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})$

$m_1\times c_1\times (T_{final}-T_1)=-[m_2\times c_2\times (T_{final}-T_2)]$ .................(1)

where,

q = heat absorbed or released

$m_1$ = mass of iron = 360 g

$m_2$ = mass of water = 750 g

$T_{final}$ = final temperature = $46.7^0C$

$T_1$ = temperature of iron = ?

$T_2$ = temperature of water = $22.5^oC$

$c_1$ = specific heat of iron = $0.450J/g^0C$

$c_2$ = specific heat of water= $4.184J/g^0C$

Now put all the given values in equation (1), we get

$-360\times 0.450\times (46.7-x)=[750\times 4.184\times (46.7-22.5)]$

$T_i=515^0C$

Therefore, the initial temperature of the iron was $515^0C$

4 0

3 years ago

A chemical _____ uses chemical symbols and subscripts to identify the number of atoms of each element in a molecule

lesya692 [45]

Chemical formula uses chemical

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3 years ago

A plant takes in carbon dioxide through small pores called stomata present in the leaves. Which process is the plant most likely

goblinko [34]

I think The answer is photosynthesis

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3 years ago

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