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3 years ago

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bonding exists within the same molecule, and ___________ forces exist between different molecules. Hydrogen, ionic Ionic, c

ovalent Intermolecular, London dispersion Ionic and covalent, intermolecular

1 answer:

olganol [36]3 years ago

8 0

Answers are Intermolecular and London dispersion

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5. A hollow glass sphere has a volume of 350 mL and

Rina8888 [55]

Explanation:

Given that,

Volume of a hallow glass sphere is 350 mL

Specific gravity is 1.252

We need to find the weight of the sphere. The ratio of density of substance to the density of water is called specific gravity.

The density of water is 1 g/mL

$\text{specific gravity}=\dfrac{\text{density of substance}}{\text{density of water}}\\\\SG=\dfrac{m}{V\times \rho_w}\\\\m=SG\times V\times \rho_w\\\\m=1.252\times 350\ mL\times 1\ g/mL\\\\m=438.2\ \text{grams}$

We know that,

1 pound = 453.592 grams

So,

m = 0.97 lbs

So, the weight of the sphere is 0.97 lbs or 0.97 pounds.

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4 years ago

Balancing chemical equation helpp me H3PO4+KOH---> K3PO4+H2O some one balance this please help me

vesna_86 [32]

Answer:

H3PO4 + 3KOH -> K3PO4 + 3H20

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4 years ago

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Question 9 solid sodium chloride is produced by the reaction of chlorine gas and solid sodium . write a balanced chemical equati

alekssr [168]

2Na (s) + Cl2 (g) ---> 2NaCl (s)

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4 years ago

An atom in its ground state is excited when it absorbs a single photon of light. The atom then relaxes back to the ground state

aivan3 [116]

Answer: Option (a) is the correct answer.

Explanation:

The given data is as follows.

wavelength of red photon ( $\lambda_{1}$ ) = 700 nm

wavelength of infrared photon ( $\lambda_{2}$ ) = 1750 nm

Therefore, calculate the wavelength of absorbed photon as follows.

$\frac{1}{\lambda_{abs}} = \frac{1}{\lambda_{1}} + \frac{1}{\lambda_{2}}$

= $\frac{1}{700} + \frac{1}{1750}$

= $\frac{2450}{1225000}$

or, $\lambda_{abs}$ = $\frac{1225000}{2450}$

= 500 nm

Therefore, we can conclude that the wavelength of the absorbed photon is 500 nm.

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3 years ago

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Differences in frames of reference are especially significant when ________. a. working on improving one’s listening skills b. c

OlgaM077 [116]

Answer:

hi :3

Explanation:

vghvhmg

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4 years ago