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2 years ago

How to change an emerson thermostat from celsius to fahrenheit.

Chemistry

1 answer:

Nana76 [90]2 years ago

5 0

How to change an emerson thermostat from celsius to fahrenheit.

Answer at the picture above.

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Which of these statements are true? Select all that apply.

777dan777 [17]

Answer:

The AH+ for Br2() is 0 kJ/mol.

The AH+ for Hg() is 0 kJ/mol.

The AH; for N261) is 0 kJ/mol.

Explanation:

7 0

3 years ago

An increase in which property would cause an electromagnetic wave's energy

patriot [66]

C. Answer correct I think…

7 0

2 years ago

Measurements show that unknown compound has the following composition: element mass 38.7 % calcium, 19.9 % phosphorus and 41.2 %

Mademuasel [1]

Answer:

D) empirical formula is: C₃P₂O₈

Explanation:

Given:

Mass % Calcium (Ca) = 38.7%

Mass % Phosphorus (P) = 19.9%

Mass % oxygen (O) = 41.2 %

This implies that for a 100 g sample of the unknown compound:

Mass Ca = 38.7 g

Mass P = 19.9 g

Mass O = 41.2 g

Step 1: Calculate the moles of Ca, P, O

Atomic mass Ca = 40.08 g/mol

Atomic mass P = 30.97 g/mol

Atomic mass O = 16.00 g/mol

$Moles\ Ca = \frac{38.7g}{40.08g/mol} =0.966\ mol\\\\Moles\ P = \frac{19.9g}{30.97g/mol} =0.643\ mol\\\\Moles\ O = \frac{41.2g}{16.00g/mol} =2.58\ mol$

Step 2: Calculate the molar ratio

$C = \frac{0.966}{0.643} =1.50\\\\P = \frac{0.643}{0.643} = 1.00\\\\O = \frac{2.58}{0.643} =4.00$

Step 3: Calculate the closest whole number ratio

C: P: O = 1.50 : 1.00 : 4.00

C : P : O = 3:2:8

Therefore, the empirical formula is: C₃P₂O₈

7 0

3 years ago

What is δg for the formation of solid uranium hexafluoride from uranium and fluorine at 25∘c when the partial pressure of f2 is

Sladkaya [172]

The reaction is

$U(s)+3F_{2} (g)-->UF_{6} (s)$

the Q of reaction will be

$Q = \frac{1}{(pF_{2})^{3}}$

$Q = \frac{1}{(0.054)^{3} } = 6350.66$

Δ $G=$ Δ $G^{0}+RTlnQ$

Putting values

ΔG = -2068000 + (8.314)(298)lnQ

ΔG = -2068000 + (8.314)(298)ln(6350.66) = -2046305 J /mol = -2046.3 kJ / mol

3 0

4 years ago

why does nitrogens lewis structure have 5 dots around it while nitrogens Bohr diagram has seven dots around it?

leonid [27]

Answer:

Bohr diagram shows electrons orbiting the nucleus. Nitrogen has 7 electrons orbiting the nucleus

Lewis structure is the simplified Bohr diagram. It only shows the electrons in the outer shell. For Nitrogen, 2 electrons are in the first shell. The remaining 5 electrons are in the outer shell.

Explanation:

Bohr diagram shows electrons orbiting the nucleus. Nitrogen has 7 electrons orbiting the nucleus

Lewis structure is the simplified Bohr diagram. It only shows the electrons in the outer shell. For Nitrogen, 2 electrons are in the first shell. The remaining 5 electrons are in the outer shell.

5 0

3 years ago