Is Vitamin E an element?

How many molecules are in the substance formula of 2C6H1206 (use coefficients)

FrozenT [24]

Answer: The number of formula units present in 2 moles of $C_6H_{12}O_6$ are $1.2044\times 10^{24}$

Explanation:

Formula units are defined as the number of molecules or atoms present in 1 mole of a compound or element respectively.

According to mole concept:

1 mole of a compound contains $6.022\times 10^{23}$ number of formula units

Here, 2 represents the number of moles of $C_6H_{12}O_6$

We are given:

Moles of $C_6H_{12}O_6$ (glucose) = 2 moles

Number of formula units of $C_6H_{12}O_6=(2\times 6.022\times 10^{23})=1.2044\times 10^{24}$

Hence, the number of formula units present in 2 moles of $C_6H_{12}O_6$ are $1.2044\times 10^{24}$

6 0

3 years ago

What is the atomic number (Z) of an atom containing 30 neutrons and having A= 70?

Romashka-Z-Leto [24]

A= mass number = number of protons and neutrons in the nucleus

Z= number of electrons = number of protons
Given, number of neutrons= 30

Z = A - 30 = 70 - 30 = 40

Z = 40

I hope I was helpful

7 0

4 years ago

Read 2 more answers

If the half life of a radioactive isotope is 1 day, then how much of the original isotope remains at the end of two days?

ikadub [295]

$\huge{\color{magenta}{\fcolorbox{magenta}{black}{\huge{\color{white}{\fcolorbox{aqua}{black}{✿ᴀɴsᴡᴇʀ✿}}}}}}$

25%

Explanation:

In a half life of a radioactive isotope is 1 day,it means it loses its half mass each day

We a formula for N half life

$\sf { \frac{1}{2} }^{n}$

where n is the number of days

Here the isotope is kept for 2 days

so it's left over mass will be

$\sf { (\frac{1}{2}) }^{2} \\ \\ \\ \frac{1}{2} \times \frac{1}{2} \\ \\ \sf \frac{1}{4}$

It's left over mass 1/4th of the original mass

Now, we need to find it's percentage by multiplying with 100

$\sf \frac{1}{4} \times 100 \%\\ \\ \sf \cancel\frac{100}{4} \% \\ \\ \sf 25\%$

So 25% mass will be left after 2 day of half life radioactive isotope.

8 0

2 years ago

Read 2 more answers

A woman uses 330 Joules of energy to push a box across the floor in 33 seconds. What is her power output in Watts?

jek_recluse [69]

Answer:

10 watts

Explanation:

Power = Work / Time

Power = 330 J / 33 s

Power = 10 watts

5 0

3 years ago

Read 2 more answers

Why is the law of conservation of mass law and not a theory?

Elodia [21]

Answer:

In physics and chemistry, the law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as the system's mass cannot change, so quantity can neither be added nor be removed.

Explanation:

That is what I think on the subject

8 0

3 years ago