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wolverine [178]
4 years ago
6

Scientists will often use a(n) _________________, an object that helps explain ideas about the natural world.

Chemistry
2 answers:
Nadya [2.5K]4 years ago
7 0

Scientists will often use a(n) _________________, an object that helps explain ideas about the natural world.

The answer is model.

sweet-ann [11.9K]4 years ago
4 0

Answer:

model

Explanation:

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Name of th molecule <br> 1. CH3CH2CHClCHBrCH3<br> 2.C=C-CH3<br> CH3CH=CHCH2
Grace [21]

Answer:

1: 2-bromo-3-chloropentane

Explanation:

find longest carbon chain =5

place the Br and Cl on the carbon chain

follow naming rules I guess

4 0
3 years ago
How many molecules are in a 2.1 mol of H2O? *
gayaneshka [121]

Answer:

The mole is the SI unit for amount of a substance.

Explanation:

Just like the dozen and the gross, it is a name that stands for a number. There are therefore 6.02 × 10 23 water molecules in a mole of water molecules.

6 0
3 years ago
How much heat is needed to raise the temperature of 100g of an iron from 25°C to
Black_prince [1.1K]

Answer:

382.5J

Explanation:

<em>Use the formula:</em>

E = mcΔθ or Q = mcΔT

m = 100g

c = 0.45 J/g°C

ΔT or Δθ = 110 - 25 = 85°

<em>Sub in the values:</em>

E = 100 × 0.45 × 85

= 382.5J

5 0
3 years ago
what is the molecular formula for a compound that is 39.99% carbon, 6.73% hydrogen, and 53.28% oxygen and has a molar mass of 18
4vir4ik [10]

Answer:

IDEK

Explanation:

5 0
3 years ago
Select the correct statement (2.5 Points) (A) s-orbitals are spherical in shape. (B) P-orbitals are dumbbell in shape. (C) s-orb
Lilit [14]

Answer:

The correct option is: (D) All of the above

Explanation:

An atomic orbital is the three-dimensional space or region around the nucleus of an atom, where the probability of finding an electron is maximum.

The s-orbitals are the atomic orbitals that have azimuthal quantum number, l = 0. These atomic orbitals have <u>spherical shape and symmetry.</u>

The p-orbitals are the atomic orbitals that have azimuthal quantum number, l = 1. These atomic orbitals have a <u>dumbbell shape.</u>

The atomic orbitals that are closer to the nucleus, have lower energy. Therefore, we can say that the <u>s-orbitals are lower in energy than the p-orbitals.</u>

6 0
3 years ago
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