how big the star is
b
how hot the star is
c
how dense the star is
d
how far away the star is
A sample of seawater has a mass of 158g and a volume of 156mL. its density is 1.012 g/mL.
According to the question the data are given is as follows:
volume of sea water = 156 mL
mass of sea water = 158 g
density of sea water can be calculated by the following formula :
D = M / V
where,
D = density
M = mass of sample
V = volume of sample
substituting all the value in the given formula , we get :
D = 158 g / 156 mL = 1.012 g/mL
Density of seawater = 1.012 g / mL
Thus, A sample of seawater has a mass of 158g and a volume of 156mL. its density is 1.012 g/mL .
To learn more about Density here
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The Triassic period is one of the geological periods and is the shortest of the Mesozoic era. Cambrian is the older era than the Triassic period.
The Triassic period existed 250 -200 million years ago and started after the vastest and most extreme devastation ever. It is the 1st period of the Mesozoic and is known for the movement of the Dinosaurs on the land, flying pterosaurs and swimming plesiosaurs and ichthyosaurs.
The Cambrian is the period of the Paleozoic era and is the most important period because of the appearance of many animals. In this period, the temperature raised on the planet and the ice sheets melted at a very dangerous rate leading to mass devastation.
Therefore, option A.Cambrian is older than the Triassic period.
Learn more about Cambrian and Triassic periods here:
Answer:
A: Cambrian!
Explanation:
got it right on ed :)
Answer choices are:
A.) Metalloids are amphoteric.
B.) Metalloids are semiconductors.
C.) Metalloids are brittle.
D.) Metalloids are shiny.
____________________________________________________________
Correct answer choice is:
B.) Metalloids are semiconductors.
____________________________________________________________
Explanation:
The form, design, and implementation of CPUs have replaced over the track of their past, but their primary process continues almost constant. Principal parts of a CPU involve the arithmetic logic unit (ALU) that executes arithmetic and logic operations, processor registers that provide operands to the ALU and save the results of ALU operations and a control unit that organizes the fetching and performance of directions by directing the coordinated operations of the ALU, registers and other elements.
Answer:
metalloids and semiconductors is your answer :)
Explanation:
took the test!
Answer:
The Plum Pudding Model and the Nuclear Atomic Model were early atomic models that helped explain the structure of an atom. Here are sketches and key points associated with each model:
**Plum Pudding Model:**
**Key Points:**
1. Proposed by J.J. Thomson in 1904.
2. The atom is considered a positively charged sphere.
3. Electrons (negatively charged particles) are embedded randomly throughout the positively charged sphere.
4. This model suggested that the atom is mostly empty space.
**Nuclear Atomic Model:**
**Key Points:**
1. Proposed by Ernest Rutherford in 1911.
2. The atom consists of a tiny, dense, positively charged nucleus at the center.
3. Electrons orbit the nucleus in specific energy levels or shells.
4. Most of the atom's mass is concentrated in the nucleus.
5. The nucleus is surrounded by a vast amount of empty space.
Here are simplified sketches of these two atomic models:
**Plum Pudding Model:**
```
O
/ \
/ \
/ \
/ \
+ + + + + + + + +
(Positively Charged Sphere)
```
In this sketch, the "+" symbols represent the positive charges distributed throughout the sphere, while the "O" symbols represent the negatively charged electrons scattered throughout.
**Nuclear Atomic Model:**
```
Nucleus (+)
/ | \
/ | \
/ | \
- - - - - - - - - - - - - - -
| | |
| Electron | Electron |
| Orbit | Orbit |
| (e-) | (e-) |
```
In this sketch, the nucleus at the center contains positively charged protons and neutrons (not shown). Electrons are shown orbiting the nucleus in discrete energy levels or shells.
These models played a crucial role in understanding atomic structure, but they were later refined and replaced by the modern quantum mechanical model, which provides a more accurate description of how electrons behave within the atom.
Explanation:
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a. True
b. False
Answer:
true
Explanation:
got it right on odyssey