Ask question

Ask question

All categories

3 years ago

7

I really need help with this. It’s #99 my work is not correct but I don’t know how to get the right answer can someone please he

lp me. The answer is supposed to be 165kj

1 answer:

Andrew [12]3 years ago

5 0

Answer:

you are rigth

Explanation:

for the bottom you did extra credit

You might be interested in

In a combustion chamber, ethane (C2H6) is burned at a rate of 8 kg/h with air that enters the combustion chamber at a rate of 17

REY [17]

Answer:

37%

Explanation:

From the question, the equation goes does.

C2H6+ (1-x)+a(O2+3.76N2)=bC02 + cH2O + axO2 + 3.76dN2.

Mair=Mair/Rin

( MN)O2 + (MN)N2÷ (MN)O2 + (MN)N2 +(MN)C2H6.

33 . 3.25(1-x) + 28 × 13.16(1-x) ÷ 33 × 3.25(1-x) + 28 × 13.16(1-x). + 30.1

= 176/176+8

X= 0.37

0.37 × 100

X= 37%

4 0

3 years ago

For hydrogen, what is the wavelength of the photon emitted when an electron drops from a 4d orbital to a 2p orbital in a hydroge

umka21 [38]

Answer:

486.17 nm

Explanation:

Using the formula $\frac{1}{\beta } = R__H (\frac{1}{n_1^2} - \frac{1}{n_2^2})$ to calculate for the wavelength of the photon emitted. where beta means a substitute for wavelength (λ) in the above equation.

Our given parameters include ;

The Rydberg constant is 1.097 × 10-2 nm-1.

an electron drops from a 4d orbital to a 2p orbital; which implies the n₂ & n₁ respectively.

Substituting them to the above equation; we can calculate for our wavelength easily;

∴

$\frac{1}{\beta}=1.097*10^{-2}(\frac{1}{2^2} - \frac{1}{4^2})$

$\frac{1}{\beta}=1.097*10^{-2}*0.1875$

$\frac{1}{\beta}=0.00205875$

Since we've earlier said our (β) serves as a substitute for wavelength (λ)

Thus; λ = 0.002056875⁻¹

λ = 486.174 nm

λ ≅ 486.17 nm

3 0

3 years ago

what would the heat transfer be if you are making macaroni and it rises and falls in a pot on the stove ?

MrMuchimi

Convection

Convection is transfer of heat through fluid (liquid or gas) caused by their molecular motion. In convection, heat current flows in a vertically upward direction. Macaroni rising and falling in a pot of boiling water is due to convection

7 0

3 years ago

ANSWER QUICK I AM RUNNING OUT OF TIME WILL BRAINLY, FRIEND, THANK, RATE YOU CAN PICK IF ANSWER CORRECTLY i have 6 ?s ANSWER I WI

Delvig [45]

Here are the answers. A,A,A,C,A,C.

I hope this helps!

4 0

4 years ago

Read 2 more answers

What type of chemical bond holds NaCI, an ionic crystal, together?

mihalych1998 [28]

Ionic bonds hold NaCl together

3 0

3 years ago

Read 2 more answers