All categories

3 years ago

Select the correct formula for the polyatomic ion.

Chemistry

2 answers:

Helga [31]3 years ago

7 0

The poly atomic ion formula for ammonium would be NH4+

nignag [31]3 years ago

4 0

Answer:

B (NH4+)

For the next one (nitrate ion) it's A (NO3-)

For the last (chromate ion...) it's C (CrO4^2-)

Explanation:

For edge:)

You might be interested in

The crystallization of salt from evaporating seawater a. is an example of precipitation from a solution. b. is, in mineralogic t

Ad libitum [116K]

Answer:

is an example of precipitation from a solution.

Explanation:

3 0

3 years ago

Cdvshduejsnxhhwjxhxh ydujdbxg

fiasKO [112]

Answer:

This is not a question

Explanation:

5 0

2 years ago

Read 2 more answers

When sodium bicarbonate and acetic acid are combined in a beaker and allowed to

777dan777 [17]

Answer: C excess reactant

Reason: It is not catalyst because catalyst are not consumed. It is not product because it was one of the reactants. It is not limiting because there was excess left over.

8 0

2 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

Consider the reaction, 2 D(g) + 3 E(g) + F(g) => 2 G(g) + H(g) When H is increasing at 0.54 mol/Ls, how quickly is F decreasi

Serga [27]

Jkiillmcxujbj u ioik.

5 0

3 years ago