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NeX [460]
3 years ago
12

Because of the high number of hydrogen bonds, water exhibits ____________ , meaning the molecules cling together. under ordinary

conditions of temperature and pressure, water exists as a ____________ .
Chemistry
1 answer:
Katena32 [7]3 years ago
4 0
Answer:  1)  "cohension" ; 

               2)  "liquid" .
____________________________________________________________
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Use the given figure to complete the statement below.
FinnZ [79.3K]
Vertical now I need to fill 20 characters
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3 years ago
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Round the following number to four significant figures and express the result in standard exponential notation: 442,722 *
OleMash [197]

Answer:

4.427 × 10⁵

Explanation:

In mathematics, rounding up a number is a way to get a more simpler figure but not too distant from the original number. Rounding up a whole number like this (442722) to significant figures means having only four non-zero digits in the figure i.e. 442722 ~ 442700.

This means that 442722 has been rounded up to 4s.f. Hence, to use scientific notations to represent our answer, we count the number of decimal places from right to left i.e.

442700 = 5 decimal places if the point is between 4 and 4 i.e. 4.427

Therefore, the figure 442700 can be written as 4.427 × 10⁵ using scientific notation.

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2 years ago
What is Electron configuration for a tin atom in the excited state and why
galina1969 [7]
The ground state electron configuration of ground state gaseous neutral tin is 4d to the power of 10. 5s to the power of 2. And 5p to the power of 2. And the term symbol is 3P0
5 0
3 years ago
What are the benefits of a model to demonstrate the atomic theory?
Norma-Jean [14]

Answer:

Atomic models are important because, they help us visualize the interior of atoms and molecules, and thereby predicting properties of matter.

Explanation:

We study the various atomic models in our course of study because, it is important for us to know, how did people come to the present concept of an atom. How did physics evolve from classical to quantum physics.

All these are important for us to know and thus, knowledge about various atomic models, their discoveries and drawbacks and finally improvements based on scientific evidence present at that time is important for us to understand the underlying theory very well.

8 0
3 years ago
Calculate how many grams of the product form when 16.7 g of oxygen gas completely reacts with solid chromium. Assume that there
34kurt

<u>Answer:</u> The mass of product formed is 79.344 g.

<u>Explanation:</u>

To calculate the number of moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}     .....(1)

Given mass of oxygen = 16.7 g

Molar mass of oxygen = 32 g/mol

Putting values in equation 1, we get:

\text{Moles of oxygen}=\frac{16.7g}{32g/mol}=0.522mol

The chemical reaction for the formation of chromium oxide follows the equation:

4Cr+3O_2\rightarrow 3Cr_2O_3

By Stoichiometry of the reaction:

3 moles of oxygen produces 3 moles of chromium oxide.

So, 0.522 moles of oxygen will produce = \frac{3}{3}\times 0.522=0.522mol of chromium oxide.

Now, calculating the mass of chromium oxide from equation 1, we get:

Molar mass of chromium oxide = 152 g/mol

Moles of chromium oxide = 0.522 moles

Putting values in equation 1, we get:

0.522mol=\frac{\text{Mass of chromium oxide}}{152g/mol}\\\\\text{Mass of chromium oxide}=79.344g

Hence, the mass of chromium oxide produced in the given reaction is 79.344 grams.

3 0
3 years ago
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