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mrs_skeptik [129]
2 years ago
13

I need numbers 6 and 8..

Chemistry
1 answer:
ioda2 years ago
5 0
Farts are science and so is your brain do you are a f
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A student conducts an experiment with a steel wool pad, which is comprised of iron. The student washes the steel wool in vinegar
Ksju [112]
B. A chemical change has occurred and energy was given off
3 0
3 years ago
The average human lives 74 years. how many seconds is this? write your answer in scientific notation
Leviafan [203]

Number of second in human lives in scientific notation is 3.9 × 10⁷ second

<u>Given that;</u>

Average human lives = 74 years

<u>Find:</u>

Number of second in human lives in scientific notation

<u>Computation:</u>

Number of second in human lives in scientific notation = 74 × 365 × 24 × 60

Number of second in human lives in scientific notation = 38,894,400

Number of second in human lives in scientific notation = 3.9 × 10⁷ second

Learn more:

brainly.com/question/3712546?referrer=searchResults

8 0
3 years ago
"Calculate the number of millimoles in 500 mg of each of the following amino acids: alanine (MW = 89), leucine (131), tryptophan
Cloud [144]

Answer:

- Alanine =  5.61 mmoles

- Leucine = 3.81 mmoles

- Tryptophan = 2.45 mmoles

- Cysteine = 4.13 mmoles

- Glutamic acid = 3.40 mmoles

Explanation:

Mass / Molar mass = Moles

Milimoles = Mol . 1000

500 mg / 1000 = 0.5 g

- Alanine = 0.5 g / 89 g/m → 5.61x10⁻³ moles  . 1000 = 5.61mmoles

- Leucine = 0.5 g / 131 g/m → 3.81 x10⁻³ moles  . 1000 = 3.81 mmoles

- Tryptophan = 0.5 g / 204 g/m →  2.45x10⁻³ moles . 1000 = 2.45 mmoles

- Cysteine = 0.5 g / 121 g/m → 4.13x10⁻³ moles . 1000 = 4.13 mmoles

- Glutamic acid = 0.5 g 147 g/m → 3.40x10⁻³ moles . 1000 =  3.4 mmoles

5 0
3 years ago
The energy required to remove an electron from a neutral atom is known as its:
Otrada [13]

Answer:

Ionization energy

Explanation:

4 0
3 years ago
When liquid gold becomes a solid, its particles get closer together. Which best describes what happened to the gold?
Rudik [331]
They lose money and then u pay back ur welcome
7 0
3 years ago
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