3 years ago

The study of the structure, reaction, and composition of substances is blank

Chemistry

1 answer:

horrorfan [7]3 years ago

4 0

The answer is Chemistry.

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What happens when you mix hydrogen and oxygen?

Lerok [7]

What happens is it makes water

5 0

3 years ago

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

At stp 5.6 liters of ch4 which element contains the same number of molecules?

Alinara [238K]

Answer:

5.6 L of hydrogen

Explanation:

when 5.6 liter is added of hydrogen, the value equallify and becomes right

4 0

3 years ago

How are radioactive isotopes used to determine the absolute age of igneous rock?

Likurg_2 [28]

Answer:

d) all of the above

5 0

2 years ago

If 4.5 moles of AlCl3 were made, how many moles of CuCl2 were used?

Troyanec [42]

Answer:

6.75 moles of CuCl₂ were used

Explanation:

Given data:

Number of moles of AlCl₃ formed = 4.5 mol

Number of moles of CuCl₂ used = ?

Solution:

Chemical equation:

3CuCl₂ + 2Al → 2AlCl₃ + 3Cu

Now we will compare the moles of CuCl₂ and AlCl₃

AlCl₃ : CuCl₂

2 : 3

4.5 : 3/2×4.5 = 6.75

6.75 moles of CuCl₂ were used.

7 0

2 years ago

The study of the structure, reaction, and composition of substances is blank​

The study of the structure, reaction, and composition of substances is blank