Sound molecules can "stack up" in front of airplanes traveling at very highspeeds. This can cause which of the following?
A. Subsonic speeds
B. Fire
C. A combustion reaction
D. Sonic booms

Answers

Answer 1

Answer: The answer is C a combustion’s reaction

Answer 2

Answer: the answer is B.......

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30. The of an object is different on everyplanet in the solar system.

Whatmis the frist planet

Answers

The first planet is Mercury

The first planet is Mercury , Mercury is the first planet from the sun with a temperature of 167*c which is 333*f

i really hope this helped.

If matter has a definite volume but no definite shape, in what state is it?

Answers

Answer: Liquid state

Explanation:

There are three states of matter named as solid , liquid and gas.

Solids have fixed shape and fixed volume as the molecules are strongly bonded to each other.

Liquids have fixed volume but no fixed shape as the molecules are weakly bonded to each other.

Gases have neither fixed shaped nor fixed volume as the molecules are very weakly bonded to each other.

Yes a liquid is the state of matter

Do falling dominoes form a wave?

Answers

What do you mean by wave? If you're talking about sound waves, of course.

they perform sound waves and motion waves

8. Which of the following statements about non-metals is correct?O A. Non-metals tend to have low ionization energy and high electronegativity.
B. Non-metals tend to have high ionization energy and high electronegativity.
O C. Non-metals tend to have low ionization energy and low electronegativity.
D. Non-metals tend to have high ionization energy and low electronegativity.

Answers

The statement about non-metals that is correct is B. Non-metals tend to have high ionization energy and high electronegativity.

A non-metal doesn't she the characteristics of a metal. It has poor thermal and electrical conductivity. Also, non-metals have a low melting point and low density.

On the other hand, mon-metals have high ionization energy, high electronegativity, and high electron affinity. When there react with other elements, they gain electrons.

Read related link on:

brainly.com/question/1494948

Answer:

The correct answer is option B, that is, non-metals tend to exhibit high electronegativity and ionization energy.

Explanation:

A chemical element, which is primarily devoid of the feature of metal is termed as a non-metal. A non-metal generally exhibit poor electrical and thermal conductivity and is brittle in solid-state. The non-metals generally possess a comparatively low boiling and melting point and also has low density.

Chemically, the non-metals exhibit comparatively high electron affinity, high electronegativity, and high ionization energy. Upon reaction with other elements and chemical compounds, these elements share or gain electrons. The non-metals are typically seventeen in number and are differentiated into two kinds, that is, noble gases and reactive non-metals.

Unlike kinetic energy, potential energy is a. energy of motion. b. stored. c. conserved. d. not measurable.

Answers

Potential energy is B: Stored energy because the energy is at rest.

Unlike kinetic energy, potential energy is stored.

Potential energy is energy at rest.

If you have a 92.0 gram sample of water, then what mass of hydrogen and what mass of oxygen are in the sample? Make sure you answer in “grams” of Hydrogen and “grams” of Oxygen.

Answers

Answer:

$\boxed{\text{10.29 g H and 81.71 g O}}$

Explanation:

The formula of water is H₂O.

1. Calculate the molar mass of water

2 H = 2 × 1.008 = 2.016 u

1 O = 1 × 16.00 = 16.00 u

MM = 18.02 u

2. Mass of hydrogen

\text{Mass of H} = \text{92.0 g water} \times \dfrac{\text{2.016 g H}}{\text{18.02 g water }} = \textbf{10.29 g $\text{Mass of H} = \text{92.0 g water} * \frac{\text{2.016 g H}}{\text{18.02 g water }} = \textbf{10.29 g H}$ H}

3. Mass of 0xygen

$\text{Mass of O} = \text{92.0 g water} * \frac{\text{16.00 g H}}{\text{18.02 g water }} = \textbf{81.71 g O}\n\n\text{The masses are } \boxed{\textbf{10.29 g H and 81.71 g O}}$

Final answer:

A 92 gram sample of water will consist of approximately 10.22 grams of hydrogen and 81.78 grams of oxygen.

Explanation:

Water

consists of two hydrogen atoms and one oxygen atom. Therefore, it has a

molecular formula of H2O

. To find the mass of each element in a 92 gram sample, we need to know the molar mass of the elements and the compound. The molar mass of hydrogen (H) is about 1 gram per mole, and oxygen (O) has a molar mass of 16 grams per mole. So, the molar mass of water (H2O) is approximately 18 grams per mole (2*1 + 16). This means that in one mole of water, 2 grams are hydrogen and 16 grams are oxygen. If we scale this up to 92 grams, we find that there are approximately 10.22 grams of hydrogen and 81.78 grams of oxygen.