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Norma-Jean [14]
2 years ago
7

SOMEONE PLS HELP ME WITH THESE 2

Social Studies
1 answer:
Schach [20]2 years ago
4 0

Answer:

number one i think is shale

number to sandstone

Explanation:

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In 9 gram of Methane and 10 gram of ammonia which has a greater number of hydrogen molecule? plz help me to solve this
Tems11 [23]

Answer:

9 grams of methane contains a greater number of hydrogen atoms (therefore molecules) than 10 grams of ammonia

Explanation:

The number of atoms of hydrogen per molecule of ammonia = 3 atoms of hydrogen

The number of atoms of hydrogen per molecule of methane = 4 atoms of hydrogen

The molar mass of methane = 16.04 g/mol

The molar mass of ammonia = 17.031 g/mol

The number of moles of methane in 9 grams of methane = 9/16.04 ≈ 0.561 moles

The number of hydrogen atoms in 0.561 moles of methane = 0.561 × 6.02 × 10²³ × 3 ≈ 1.351 × 10²⁴ atoms of hydrogen

The number of moles of ammonia in 10 grams of ammonia = 10/17.031 ≈ 0.5872 moles

The number of hydrogen atoms in 0.5782 moles of ammonia = 0.5872 × 6.02 × 10²³ × 3 ≈ 1.06 × 10²⁴ atoms of hydrogen

Therefore, 9 grams of methane contains a greater number of hydrogen atoms than 10 grams of ammonia.

7 0
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Which of the following is not used as a depth cue by the visual system
Jobisdone [24]

Answer:

B) Priming

Explanation:

4 0
3 years ago
During what time of day did most trench warfare battles take place during World War I
gavmur [86]
Most trench warfare battles took place right before dawn.
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Ganezh [65]
D because I just took a test and got it right
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a_sh-v [17]

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A reason is becuase they were an important channel for ancient trade between East and West. Also, a second reason is because the Silk Road provided a strategic link for ancient eastern and western cultural exchange. Hope this answered your question!

7 0
2 years ago
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