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3 years ago

(science)

Chemistry

2 answers:

Simora [160]3 years ago

7 0

The answer is B element symbols

ra1l [238]3 years ago

6 0

Answer:

b. . the element symbol

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The products in a decomposition reaction _____. are compounds can be elements or compounds are elements include an element and a

ivann1987 [24]

Answer:

compounds are elements include an element and a compound

Explanation:

elements in the decomposition reaction is the substance that cannot be separated into simpler substances. Compounds, technically act as a reactant in the decomposition reaction, but since the reaction breakdown one substance into two or more, sometimes it exists in the product

7 0

2 years ago

A mixture of ethyl acetate vapour and air has a relative saturation of 50% at 303 K and a total pressure of 100 kPa. If the vapo

AURORKA [14]

Answer : The correct option is, (b) 0.087

Explanation :

The formula used for relative saturation is:

$\text{Relative saturation}=\frac{P_A}{P_A^o}$

where,

$P_A$ = partial pressure of ethyl acetate

$P_A^o$ = vapor pressure of ethyl acetate

Given:

Relative saturation = 50 % = 0.5

Vapor pressure of ethyl acetate = 16 kPa

Now put all the given values in the above formula, we get:

$0.5=\frac{P_A}{16kPa}$

$P_A=8kPa$

Now we have to calculate the molar saturation.

The formula used for molar saturation is:

$\text{Molar saturation}=\frac{P_{vapor}}{P_{\text{vapor free}}}$

and,

P(vapor free) = Total pressure - Vapor pressure

P(vapor) = $P_A$ = 8 kPa

So,

P(vapor free) = 100 kPa - 8 kPa = 92 kPa

The molar saturation will be:

$\text{Molar saturation}=\frac{P_{vapor}}{P_{\text{vapor free}}}$

$\text{Molar saturation}=\frac{8kPa}{92kPa}=0.087$

Therefore, the molar saturation is 0.087

5 0

3 years ago

Some chemical reactions can proceed in just one direction . True or False ?

ss7ja [257]

The answer is False. i think

4 0

3 years ago

Read 2 more answers

Elliot conducts a study with one experimental group and one control group. elliot has _______ independent variable(s with ______

il63 [147K]

The answer that fits the blank are ONE and TWO, respectively. Given Elliot's study or experiment, she has only one experimental group and one control group which brings to the fact that she has only one independent variable that has two groups.

8 0

3 years ago

Which of the following is a step in the conversion of 2.5 hms to L?

LUCKY_DIMON [66]

Helloo

To convert to L
2.5 hm^3 * (100m/hm)^3 *1000 L/m^3 gives a volume of 2.5*10^9 L

Have a nice day

6 0

2 years ago