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3 years ago

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Which elements are found in the compound NaOH? A. sodium, oxygen, and hydrogen B. nitrogen, oxygen, and hydrogen C. nitrogen, ar

senic, oxygen, and hydrogen D. sodium and hydroxide

1 answer:

Jet001 [13]3 years ago

6 0

Sodium, Oxygen, and Hydrogen are found in NaOH. Na=Sodium, O=Oxygen, H=Hydrogen.

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3 years ago

Consider the following reaction:

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4 years ago

Read 2 more answers

A piston-cylinder device has two stops; a lower set and an upper set, that constrain the cylinder. When the piston is on the low

stich3 [128]

Answer:

2080kJ

Explanation:

m(U4 - U1) = Q4 - W4

If P is less than 300kpa, then V = 0.4L

If P is greater than 300kpa, then V = 0.6L

If P is equal to 300kpa, then 0.4L < V < 0.6L

At 100kpa, vf = 0.001043m/kg and vg = 1.693m³/kg

Level 1

v1 = 0.001043 + 0.2 x 1.693 = 0.33964

m = V1/v1 ⇔ 0.4/0.33964

m = 1.178kg

u1 = 417.36 + 0.2 x 2088.7 = 835.1kJ/kg

Level 3

v3 = 0.6/1.178 = 0.5095 < vG = 0.6058 at P3 is equal to 300kpa

NOTE: Piston does reach upper stops to reach saturated vapor

Level 4

v4 = v3 = 0.5095m³/kg = vG at P4

P4 = 361kpa, u4 = 2550.0kJ/kg

1W4 = 1W2 + 2W3 + 3W4 = 0 + 2W3 + 0

1W4 = P2 (V3 - V2) = 300 x (0.6 - 0.4) = 60kJ

1Q4 = m(u4 -u1) + 1W4 = 1.178(2550.0 - 835.1) + 60 = 2080kJ

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3 years ago