The molecule CH20 contains two single bonds and one double bond. True False

Describe Chemical and physical changes of ice water placed in the refrigerator

Talja [164]

So in a chemical change, the product would loses its properties, would form new products and would not be easily reversed.

In a physical change, the products WILL NOT lose any of their properties, WILL NOT form any new products and WILL be easily reversed.

Talking about Water turning to ice I would say it’s all about physical change and not chemical change.
But I would suggest you to either make a research about it or ask your teacher :))

6 0

3 years ago

Describe 3 properties of a frozen fruit far including state of matter

miv72 [106K]

Nucleic Acids, Protein Coat,and Lipid Membrane

4 0

3 years ago

Write the molecular equation and the net inonic equation for each of the following aqueous reactions. If no reaction occurs, wri

SIZIF [17.4K]

Answer: The equations are given below.

Explanation:

For the given options:

Option 1: $AgNO_3+NaI$

The molecular equation for this follows:

$AgNO_3(aq.)+NaI(aq.)\rightarrow AgI(s)+NaNO_3(aq.)$

Ionic form of the above equation follows:

$Ag^+(aq.)+NO_3^-(aq.)+Na^+(aq.)+I^-(aq.)\rightarrow AgI(s)+Na^+(aq.)+NO_3^-(aq.)$

As, sodium and nitrate ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation.

The net ionic equation for the above reaction follows:

$Ag^+(aq.)+I^-(aq.)\rightarrow AgI(s)$

Option 2: $Ba(NO_3)_2+K_2SO_4$

The molecular equation for this follows:

$Ba(NO_3)_2(aq.)+K_2SO_4(aq.)\rightarrow 2KNO_3(aq.)+BaSO_4(s)$

Ionic form of the above equation follows:

$Ba^{2+}(aq.)+2NO_3^-(aq.)+K^+(aq.)+SO_4^{2-}(aq.)\rightarrow 2K^+(aq.)+2NO_3^-(aq.)+BaSO_4(s)$

As, potassium and nitrate ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation.

The net ionic equation for the above reaction follows:

$Ba^{2+}(aq.)+SO_4^{2-}(aq.)\rightarrow BaSO_4(s)$

Option 3: $NH_4NO_3+K_2SO_4$

The molecular equation for this follows:

$2NH_4NO_3(aq.)+K_2SO_4(aq.)\rightarrow 2KNO_3(aq.)+H_2SO_4(aq.)+NH_3(g)$

Ionic form of the above equation follows:

$2NH_4^+(aq.)+2NO_3^-(aq.)+2K^+(aq.)+SO_4^{2-}(aq.)\rightarrow 2NH_3(g)+2H^+(aq.)+SO_4^{2-}(aq.)+2K^+(aq.)+2NO_3^-(aq.)$

As, nitrate, potassium and sulfate ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation.

The net ionic equation for the above reaction follows:

$2NH_4^+(aq.)\rightarrow 2NH_3(g)+2H^+(aq.)$

Option 4: $LiCl+Al(NO_3)_3$

The molecular equation for this follows:

$3LiCl(aq.)+Al(NO_3)_3(aq.)\rightarrow 3LiNO_3(aq.)+AlCl_3(s)$

Ionic form of the above equation follows:

$3Li^+(aq.)+3Cl^-(aq.)+Al^{3+}(aq.)+NO_3^-(aq.)\rightarrow 3Li^+(aq.)+3NO_3^-(aq.)+AlCl_3(s)$

As, lithium and nitrate ions are present on both the sides of the reaction. Thus, it will not be present in the net ionic equation.

The net ionic equation for the above reaction follows:

$Al^{3+}(aq.)+3Cl^-(aq.)\rightarrow AlCl_3(s)$

Hence, the molecular and ionic equations are given above.

5 0

3 years ago

When you mixed 20 grams of magnesium and an excess of nitric acid, 1.7 grams of hydrogen was actually produced. What is the perc

AleksAgata [21]

The chemical reaction is written as:

Mg + 2HNO3 = Mg(NO3)2 + H2

We use this reaction and the amounts given to calculate the theoretical yield of the reactants. Then, we can calculate for the percent yield We do as follows:

20 g Mg (1 mol / 24.31 g) ( 1 mol H2 / 1 mol Mg ) (2.02 g / 1 mol ) = 1.66 g H2 theoretical

Therefore,

Percent yield = 1.66 / 1.7 x100 = 97.8%

7 0

3 years ago

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What type of radiation is lead emitting in the following equation?

qaws [65]

Answer: B, it is beta particles

5 0

3 years ago

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