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Y_Kistochka [10]
2 years ago
9

After reading a book about parrots, Tani wants to learn more about them. Which question could be answered through scientific inv

estigation?
A. Which bird’s eggs taste the best?
B. What substances make up an eggshell?
C. Which birds have the most beautiful feathers?
D. Which type of bird makes the best pet in an apartment?
Chemistry
1 answer:
FrozenT [24]2 years ago
8 0

After reading a book about parrots, Tani wants to learn more about them. The question that could be answered through scientific investigation is letter B, ‘<span>What substances make up an eggshell?’ The other choices cannot be answered through scientific investigation.</span>

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Two identical 732.0 L tanks each contain 212.0 g of gas at 293 K, with neon in one tank and nitrogen in the other. Based on the
Vladimir [108]

Answer: (a) Neon, Nitrogen; (b) Neon, Nitrogen; (c) Neon is lower than Nitrogen; (d) It doesn't affect;

Explanation: The kinetic-molecular theory studies the behavior of particles under pre-determinated situation. In cases of gases, the particles moving around colliding with each other and the walls of the container, without loss of energy. In the case in question, all the parameters are the same (same temperature, volume and pressure), except for the gases, which has different molar masses. In this sense, Neon has lower average speed due to its molar mass being higher, which means, its particles moves slower for being heavier. Related to pressure, as velocity is lower, it collides less with the walls of the tank, and so pressure is lower. For density, it doesn't affect the behavior of the system nor the kinetic energy.

7 0
3 years ago
The process of pouring a mixture though a filter to catch the larger particles while allowing the smaller particles to pass thro
Annette [7]
This process is called filtration. This process is a solid-fluid separation by the use of a medium wherein only the fluid (gases or liquids) can go through it. The medium is called the filter while the fluid that passed through the filter is called the filtrate. The solid particles are the large particles which cannot pass through the filter.
4 0
3 years ago
Which phrase is the best description of a topographic map? A shows the physical features of the land B shows political boundarie
Black_prince [1.1K]

A shows the physical features of the land

Explanation:

A topographic map is a map that shows the physical features of the land area. Rivers, streams, mountains, valleys, hills and other physical features.

  • A topographic map is made up of series of contour lines.
  • The contour lines are lines that joins places of equal elevation.
  • All places on the contour lines have the same elevation.
  • Using the contour lines, we can understand the landforms in an area.
  • Other map keys are used to delineate settlement patterns, streams, churches, dams and the like.
  • Most topographic maps are used as base maps for making other maps.

learn more:

Physical map brainly.com/question/3687554

#learnwithBrainly

8 0
3 years ago
Read 2 more answers
Can anybody check my answer?
anzhelika [568]

Answer:

\boxed{\text{25. 20 L; 26. 49 K}}

Explanation:

25. Boyle's Law

The temperature and amount of gas are constant, so we can use Boyle’s Law.

p_{1}V_{1} = p_{2}V_{2}

Data:

\begin{array}{rcrrcl}p_{1}& =& \text{100 kPa}\qquad & V_{1} &= & \text{10.00 L} \\p_{2}& =& \text{50 kPa}\qquad & V_{2} &= & ?\\\end{array}

Calculations:

\begin{array}{rcl}100 \times 10.00 & =& 50V_{2}\\1000 & = & 50V_{2}\\V_{2} & = &\textbf{20 L}\\\end{array}\\\text{The new volume will be } \boxed{\textbf{20 L}}

26. Ideal Gas Law

We have p, V and n, so we can use the Ideal Gas Law to calculate the volume.

pV = nRT

Data:  

p = 101.3 kPa

V = 20 L

n = 5 mol

R = 8.314 kPa·L·K⁻¹mol⁻¹

Calculation:

101.3 × 20 = 5 ×  8.314 × T

2026 = 41.57T

T = \dfrac{2026}{41.57} = \textbf{49 K}\\\\\text{The Kelvin temperature is }\boxed{\textbf{49 K}}

6 0
3 years ago
The reaction of a metal with oxygen to form rust is called
azamat

The reaction of a metal with oxygen to form rust is called as redox reaction.

Explanation:

The process during which the surface of metal reacts with the oxygen ions present in air, it has tendency to get oxidized that is formation of an oxide layer on the surface of the metal. Generally, it occurs when metals like iron comes in contact with moisture or water. So the oxygen in moisture reacts with iron giving its electron and getting oxidized and reducing the surface of metal by forming metal oxide. So the complete process of formation of rust is termed as redox reaction. As here both oxidation and reduction is taking place.

3 0
3 years ago
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