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3 years ago

WILL GIVE BRAINLIEST TO CORRECT ANSWER QUESTION IS ON PICTURE

Chemistry

2 answers:

Ivahew [28]3 years ago

7 0

Answer:

Explanation:

When a temperature increases particles tend to collide with each other often as they gain kinetic energy making them collide much more often and they'll collide with more energy due to the increase of kinetic energy

vazorg [7]3 years ago

4 0

Answer : A
Explanation:

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Given 3.4 grams of x compound with a molar mass of 85 g and 4.2 grams of y compound with a molar mass of 48 g How much of compou

Ulleksa [173]

Answer:

$4.36~g~XY$

Explanation:

In this case, we can start with the reaction:

$2X + Y_2~->~2XY$

If we check the reaction, we will have 2 X and Y atoms on both sides. So, the reaction is balanced. Now, the problem give to us two amounts of reagents. Therefore, we have to find the limiting reagent. The first step then is to find the moles of each compound using the molar mass:

$3.4~g~X\frac{1~mol~X}{85~g~X}=0.04~mol~X$

$4.2~g~Y_2\frac{1~mol~Y_2}{48~g~Y_2}=0.0875~mol~Y_2$

Now, we can divide by the coefficient of each compound (given by the balanced reaction):

$\frac{0.04~mol~X}{1}=~0.04$

$\frac{0.0875~mol~Y_2}{2}=0.04375$

The smallest value is for "X", therefore this is our limiting reagent. Now, if we use the molar ratio between "X" and "XY" we can calculate the moles of XY, so:

$0.04~mol~X\frac{2~mol~XY}{2~mol~X}=0.04~mol~XY$

Finally, with the molar mass of "XY" we can calculate the grams. Now, we know that 1 mol X = 85 g X and 1 mol $Y_2$ = 48 g $Y_2$ (therefore 1 mol Y = 24 g Y). With this in mind the molar mass of XY would be 85+24 = 109 g/mol. With this in mind:

$0.04~mol~XY\frac{109~g~XY}{1~mol~XY}=4.36~g~XY$

I hope it helps!

6 0

3 years ago

0.0136 g + 2.70 × 10-4 g - 4.21 × 10-3 g = ?

melisa1 [442]

Answer choice is , 2

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2 years ago

Which of the following is an example of a physical property?*

MariettaO [177]

Answer: The mass

Explanation: ability to rust, flammability, and ability to combust are chemical properties.

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3 years ago

PLEASE HELP ASAP!!!

solong [7]

The answer is, C: both Erin and Chris are correct.

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3 years ago

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How many molecules are in 3.2 mol of ammonia,NH3

EastWind [94]

Here we are talking about ammonia which is a molecule. Now 1 mole of ammonia also contains 6.022 * 10^23 molecules of ammonia. In one molecule of ammonia,we have 1 nitrogen atom and 3 hydrogen atom.

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3 years ago

*WILL GIVE BRAINLIEST TO CORRECT ANSWER * *QUESTION IS ON PICTURE*

WILL GIVE BRAINLIEST TO CORRECT ANSWER QUESTION IS ON PICTURE