All categories

3 years ago

Guys please help me...

Chemistry

1 answer:

valentina_108 [34]3 years ago

7 0

Answer:

On the farm there are 70 chickens.

Explanation:

We can directly work out the number of ducks from the given number of pigs, with the ratio of ducks to pigs:

36 pigs * $\frac{5Ducks}{9Pigs}$ = 20 ducks

Then we work out the number of chickens, using the ration of chickens to ducks:

20 ducks * $\frac{7Chickens}{2Ducks}$ = 70 chickens

If on the farm there are 36 pigs, there are 70 chickens as well.

You might be interested in

I need help with number 2

Mademuasel [1]

Answer:

The water in the leaf will evaporate

Explanation:

the leaf would absorb the water and when sat in the sun, the water would evaporate and the leaf would dry out

6 0

3 years ago

Read 2 more answers

What is the mass of 0.5 moles of ammonia, NH3?

Mashcka [7]

Answer:

Mass = 8.5 g

Explanation:

Given data:

Mass of ammonia = ?

Number of moles = 0.5 mol

Solution:

Formula:

Mass = number of moles × molar mass

Molar mass of ammonia = 17 g/mol

By putting values,

Mass = 0.5 mol × 17 g/mol

Mass = 8.5 g

8 0

3 years ago

How many oxygen atoms does 1 mol of 02 gas have?

BigorU [14]

Answer:

two oxygen atoms

Explanation:

One mole of oxygen gas, which has the formula O2, has a mass of 32 g and contains 6.02 X 1023 molecules of oxygen but 12.04 X 1023 (2 X 6.02 X 1023) atoms, because each molecule of oxygen contains two oxygen atoms.

4 0

3 years ago

Read 2 more answers

Calculate % oxygen in CO (NO)3

Alexxx [7]

50 percent

there are 8 atoms in this molecule

and 4 of them are oxygen molc. so:

$\frac{4}{8} \times 100 = \%50$

good luck

8 0

3 years ago

Give the complete ionic equation for the reaction (if any) that occurs when aqueous solutions of lithium sulfide and copper (II)

Aloiza [94]

Answer:

$2Li^+_{(aq)}+S^{2-}_{(aq)}+Cu^{2+}_{(aq)}+2NO_3^{-}_{(aq)}\rightarrow CuS_{(s)}+2Li^+_{(aq)}+2NO_3^{-}_{(aq)}$

Explanation:

Complete ionic equation : In complete ionic equation, all the substance that are strong electrolyte and present in an aqueous are represented in the form of ions.

The balanced molecular equation will be,

$Li_2S_{(aq)}+Cu(NO_3)_2_{(aq)}\rightarrow CuS_{(s)}+2LiNO_3_{(aq)}$

The complete ionic equation in separated aqueous solution will be,

$2Li^+_{(aq)}+S^{2-}_{(aq)}+Cu^{2+}_{(aq)}+2NO_3^{-}_{(aq)}\rightarrow CuS_{(s)}+2Li^+_{(aq)}+2NO_3^{-}_{(aq)}$

4 0

3 years ago