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2 years ago

5

Think of the different types of reactions you have learned about. How can you tell if they absorb energy or release energy, and

at the molecular level, how are they different?

1 answer:

Leokris [45]2 years ago

6 0

Answer:

well the reactions are probably wow and amazed

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How many liters of dinitrogen tetoxide are formed from 2.5 L of nitrogen?

Black_prince [1.1K]

Answer:

2.5 L

Explanation:

The stoichiometric ratio of N2 to N2O4 is 1:1

7 0

3 years ago

The Prandtl number, Pr, is a dimensionless group important in heat transfer. It is defined as Pr - Cp*mu/k where Cp is the heat

algol [13]

Answer:

The Prandtl number for this example is 14,553.

Explanation:

The Prandlt number is defined as:

$Pr=\frac{C_{p}*\mu}{k}$

To compute the Prandlt number for this case, is best if we use the same units in every term of the formula.

$\mu=1896 \frac{lbm}{ft*h}*\frac{1000 g}{2.205 lbm}*\frac{3.281 ft}{1 m}*\frac{1h}{3600s} =7938 \frac{g}{m*s}$

Now that we have coherent units, we can calculate Pr

$Pr=\frac{C_{p}*\mu}{k}=0.66*7938/0.36=14553$

8 0

3 years ago

For the following experiments, identify the independent variable and the dependent variable:

faust18 [17]

Answer:

A) IV: number of hours DV: score

Explanation:

Coz,

IV- is the variable that u change

DV- is the variable that u test or measure

In this case, we need to change the hours of studying to see how studying for different hours [1 hr, 2hr, etc (( Independant variable coz we're changing the no. of hours)) ] is going to affect the student's score, and in the end, we are measuring the score of each student [this is the dependant variable].

3 0

2 years ago

Please help thank you

maxonik [38]

Answer:

$K=1.7x10^{-3}$

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to solve this problem by firstly setting up the equilibrium expression for the given reaction, in agreement to the law of mass action:

$K=\frac{[NO]^2}{[N_2][O_2]}$

Next, we plug in the given concentrations on the data table to obtain:

$K=\frac{(0.034)^2}{(0.69)(0.98)}\\\\K=1.7x10^{-3}$

Regards!

5 0

2 years ago

Francis is learning about dissolving at school. She reads descriptions about the rate of dissolving from four of her friends.

Naddika [18.5K]

Answer:

I personally think Manuel

Explanation:

7 0

2 years ago

Read 2 more answers