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3 years ago

help pls how do i caluclate it i have the answer i just need to know how to calculate it. The second one

Mathematics

2 answers:

Novosadov [1.4K]3 years ago

5 0

Answer:

you add all of their weights together.

Step-by-step explanation:

inysia [295]3 years ago

4 0

Answer:

I think you just add up all the weights and then you get your answer so just add the numbers I think

Step-by-step explanation:

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Suppose that stoichiometric amounts of nitrogen gas and hydrogen gas react in a calorimeter to produce 5.00 g of ammonia gas. Th

Arturiano [62]

0.42 C * 32.14kj/1 = 13.499 KJ . . .rounded to 13.5

5g NH3 * 1 mol NH3/17 g NH3 = 0.294 mol NH3

kJ/mol = 13.5 kJ/0.294 = 45.9 kJ/Mol

hope this helps

5 0

4 years ago

Which expression is the additive inverse of 25? A. –25 B. C. D. 25

bonufazy [111]

I think it would be A. hope this helps!

8 0

3 years ago

The width of a rectangle is 6 centimeters less then the length . The preimeter is 64 centimeters find the width ?

Diano4ka-milaya [45]

<span>A)
2x+2(x-6)=64
4x-12=64
4x=76
x=19
x-6=13

B)
20+4x+x=180
5x=160
x=32 degrees
4x=128 degrees

C)
180-62.5=117.5 degrees</span>

3 0

4 years ago

a. A student builds a simple circuit with a single resistor with resistance R and measures an electric potential difference ΔV a

GrogVix [38]

Answer:

The new current is half the original current.

Step-by-step explanation:

Ohm's Law:

We use Ohm's law to solve this question. It states that

$\Delta_V = RI$

In which $\Delta_V$ is the voltage difference, R is the resistence, and I is the current.

A student builds a simple circuit with a single resistor with resistance R and measures an electric potential difference ΔV across the resistor.

$\Delta_V = RI_{1}$

$I_{1} = \frac{\Delta_V}{R}{/tex]Then, the student replaces the resistor with a new one of resistance 2R and keeps the electric potential difference the same.Now the current will be[tex]\Delta_V = 2RI_{2}$

$I_{2} = \frac{\Delta_V}{2R} = \frac{1}{2}(\frac{\Delta_V}{R}) = \frac{1}{2}(I_1)$

The new current is half the original current.

7 0

3 years ago

your paycheck shows that you had earned $342 for working 36 hours last week, what is your hourly rate

34kurt

$9.5 because $342/36= 9.5

4 0

3 years ago