Ask question

Ask question

All categories

3 years ago

12

The Earth's circumference around the equator is slightly bulged as compared to the circumference around the poles. if the circum

ference around earth's equator is 29,902 miles, what is this in Mm?

1 answer:

Igoryamba3 years ago

5 0

The earth in m is 510

You might be interested in

The addition of perchloric acid to pure water causes the conductivity to _________.

Olin [163]

Adding perchloric acid to water would cause it's conductivity to increase.

3 0

2 years ago

Read 2 more answers

What is the vitamin in an apple?

bulgar [2K]

Answer:

98 IU

Vitamin A

Explanation:

3 0

3 years ago

Read 2 more answers

The enzyme, carbonic anhydrase, is a large zinc-containing protein with a molar mass of 3.00 x10^4 g/mol. Zn is 0.218% by mass o

tia_tia [17]

The mathematical expression for mass percent is given by:

$Mass percent = \frac{mass of the compound}{molar mass of the compound}\times 100$

Put the values,

$0.218 percent of zinc = \frac{mass of zinc}{3.00 \times 10^{4} g/mol}\times 100$

mass of zinc = $0.218 \times (3\times 100) g$

= $0.654 \times 100 g$ or 65.4 g

Now, number of moles of zinc = $\frac{given mass in g}{molar mass of zinc}$

= $\frac{65.4 g}{65.38 g/mol}$

= 1.00 mole

Number of atoms of zinc is calculated by the Avogadro number.

Now, according to mole concept

$6.022\times 10^{23}$ molecules of enzyme consists of $6.022\times 10^{23}$ atoms of zinc

So, 1 molecule of enzyme contains = $\frac{6.022\times 10^{23}atoms of zinc}{6.022\times 10^{23} }$

= 1 atom of zinc.

Hence, every carbonic anhydrase molecule consists of 1 atom of zinc.

5 0

3 years ago

The substance which does the dissolving in a solution is

oksano4ka [1.4K]

Answer:

solvents dissolve in liquids

6 0

2 years ago

A reaction is spontaneous if ΔG is ___?<br> negative, positive, or zero?

amm1812

Answer:

A reaction is spontaneous if ΔG is negative.

Explanation:

The change in free energy (ΔG) is the difference between the heat released during a process and the heat released for the same process occurring in a reversible manner.

The sign of ΔG gives an indication for the spontaneity of the reaction:

If ΔG is negative, the reaction is spontaneous.

If ΔG = zero, the reaction is at equilibrium.

If ΔG is positive, the reaction is non-spontaneous.

3 0

3 years ago