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3 years ago

Wich term names snow fences made from trees and bushes? A. living fences B. biologics C. drift obstacle D. baffler fences

Chemistry

1 answer:

WITCHER [35]3 years ago

4 0

The term of snow fences that is made from trees and bushes is living fences (answer A)

Explanation

The living fence is made up trees or shrub.

Pyracantha and holly are example of shrubs that are used to make living fence. They are evergreen shrubs that produce a beautiful berries in winter and white flowers in the spring.

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30.0 grams of NaNO3 is dissolved in water to make a 5.00 L solution. What is the molarity of the solution?

Morgarella [4.7K]

Answer:

Molarity= 0.071M

Explanation:

Molar mass of NaNO3= 23+14+(16*3)=85

n= m/M = 30/85= 0.353mol

V= 5L

Applying

n= CV

0.353= C×5

Simplify

C= 0.071M

4 0

3 years ago

A 20.00 g mixture of magnesium and zinc metal reacting with excess hydrochloric acid produced 1.152 g of hydrogen gas. what is t

mafiozo [28]

percentage of zinc= 5.985/20 X 100= 29.5%

let x represents zinc and y be magnesium so

Zinc(s) + 2HCl(aq) -----> ZnCl2(aq) + H2(g)

Mg(s) + 2HCl(aq) -----> MgCl2(aq) + H2(g)

1.152 g of hydrogen gas=( x/65.3 + y/24.305) 20

= 3.08 x10^-2 + 0.8295-8.30

=x=5.985

y= 4.015

percentage of zinc= 5.985/20 X 100= 29.5%

The hydrogen gas escapes, so the two products of Zinc Chloride and Magnesium Chloride will then react with Silver Nitrate. Again, I combine both of the reactions

To learn more about zinc:

brainly.com/question/13890062

#SPJ4

7 0

2 years ago

Help me with this pleaseeeeeee

stiks02 [169]

Magnesium oxide is an ionic compound with a very high melting point and which requires a large amount of energy for melting.

<h3>What are ionic compounds?</h3>

Ionic compounds are compounds which are formed between oppositely charged ions which are held together by electrostatic forces of attraction between the oppositely charged ions.

Ionic compounds are formed when metal atoms donate electrons to non-metals atoms to form ions.

Magnesium oxide is an ionic compound.

The nature of bonding is ionic bonding.

It has a crystalline lattice structure.

The forces of attraction is electrostatic forces of attraction.

It has a high melting point of 2,852 °C, and thus requires a large amount of energy go melting to occur.

Therefore, magnesium oxide is an ionic compound which requires a large amount of energy for melting.

Learn more about ionic compounds at: brainly.com/question/11638999

3 0

2 years ago

Solutions of sodium carbonate and silver nitrate react to form solid silver carbonate and a solution of sodium nitrate. A soluti

ss7ja [257]

Answer:

1.89 of Sodium Carbonate

3.94 g of Silver Carbonate

2.43 g of Sodium Nitrate

Zero grams of Silver Nitrate

Explanation:

We have to start with the reaction:

$AgNO_3~+~Na_2CO_3~->~Ag_2CO_3~+~NaNO_3$

Now, we can balance the reaction:

$2AgNO_3~+~Na_2CO_3~->~Ag_2CO_3~+~2NaNO_3$

Now, we have to calculate the limiting reagent and we have to follow a few steps:

1) Convert to moles (using the molar mass of each compound)

2) Divide by the coefficient of each reactive (given by the balanced reaction)

Convert to moles

$3.40~g~Na_2CO_3\frac{105.98~g~Na_2CO_3}{1~mol~Na_2CO_3}=0.032~mol~Na_2CO_3$

$4.86~g~AgNO_3\frac{169.8~g~AgNO_3}{1~mol~AgNO_3}=0.0286~mol~AgNO_3$

Divide by the coefficient

$\frac{0.032~mol~Na_2CO_3}{1}=0.032$

$\frac{0.0286~mol~AgNO_3}{2}=0.0143$

The smallest value is for $AgNO_3$ , therefore the 4.86 g of $AgNO_3$ .

Now we can calculate the amount of compounds produced is we follow a few steps:

1) Use the molar ratio

2) Convert to moles (using the molar mass of each compound)

Amount of Silver Carbonate

$0.0286~mol~AgNO_3\frac{1~mol~AgCO_3}{2~mol~AgNO_3}\frac{275.74~g~AgCO_3}{1~mol~AgCO_3}=3.94~g~AgCO_3$

Amount of Sodium Nitrate

$0.0286~mol~AgNO_3\frac{2~mol~NaNO_3}{2~mol~AgNO_3}\frac{84.99~g~NaNO_3}{1~mol~NaNO_3}=2.43~g~NaNO_3$

Amount of Sodium Carbonate (Excess reactive)

$0.0286~mol~AgNO_3\frac{1~mol~NaCO_3}{2~mol~AgNO_3}\frac{105.98~g~NaCO_3}{1~mol~NaCO_3}=1.51~g~NaCO_3$

$3.4~g~NaCO_3-1.51~g~NaCO_3=1.89~g~NaCO_3$

Amount of Silver Nitrate

All the silver nitrate would be consumed in the reaction

I hope it helps!

7 0

4 years ago

Designing and building a water purification system is an example of how _________________ has benefited society.

padilas [110]

Answer:

Science.

Science seems like the most logical answer.

5 0

3 years ago