The Periodic Table of the Elements is an ingenious chart. It is a tool for understanding how each element relates to other elements and predicting how it will react to other elements etc. If you know the location of an element on the Periodic Table of the Elements, you know how many shells it has and how many _______________ __________________ it has, which tells you whether its a metal, nonmetal, or a metalloid or semimetal.
a. Valence Electrons
b. mass number
c. neutrons
d.atomic mass

Answer: The final temperature of the mixture will be [tex]2.5^0C[/tex]

Explanation:

[tex]heat_{absorbed}=heat_{released}[/tex]

As we know that,  

[tex]Q=m\times c\times \Delta T=m\times c\times (T_{final}-T_{initial})[/tex]

[tex]m_1\times c_1\times (T_{final}-T_1)=-[m_2\times c_2\times (T_{final}-T_2)][/tex]         .................(1)

where,

q = heat absorbed or released

[tex]m_1[/tex] = mass of first sample of ethanol = 100 ml

[tex]m_2[/tex] = mass of second sample of ethanol = 300 ml

[tex]T_{final}[/tex] = final temperature = ?

[tex]T_1[/tex] = temperature of  first sample of ethanol  = [tex]25^oC=298K[/tex]

[tex]T_2[/tex] = temperature of second sample of ethanol  = [tex]-5^oC=268K[/tex]

[tex]c_1[/tex] = [tex]c_2[/tex] = specific heat of ethanol

 Now put all the given values in equation (1), we get

[tex]-100\times (T_{final}-298)=[300\times (T_{final}-268)][/tex]

[tex]T_{final}=275.5K=2.5^0C[/tex]

Therefore, the final temperature of the mixture will be [tex]2.5^0C[/tex]

Answer:

i believe its B

There is no lunar eclipse every time Earth is in between the sun and

the Moon as a result of the orbit of the moon being tilted relative to the

orbit of the Earth around the sun.

This is a phenomenon which occurs when the Sun, Earth, and Moon are

closely aligned with Earth being between the other two bodies.

The orbit being tilted ensures that the moon often passes below or above

Earth which is the main reason why lunar eclipse doesn't occur all the time

and makes it most appropriate.

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Answer: Filtration technique

Explanation:

The technique used here is called filtration.

Filtration,is a physical separation process that separates a mixture of an insoluble solid from a liquid ( acting as the solvent) by the use of a filter barrier that allows only the fluid to pass through.

In the case from the question,

As water is poured over the ground coffee, it forms a mixture of which the insoluble solid is the coffee grounds, the water is the liquid  and the filter barrier is the piece of paper  which allows only the brown  liquid coffee to pass through as the filtrate.

Answer:

reflection is correct answer by my views

Answer:

top one is anaphase and the middle one is cytokinesis can't see enough of the bottom one to tell

Explanation:

Answer:

thanks for share to use a brainly tutor or if any help... I want to say is the answer would be: 800 cm ^3

Explanation:

thank you!

have a great week

The volume is generally measured in Liters, milliliters, cm³, m³, etc. At constant pressure and temperature, the volume produced by six tablets will be 1200 cm³. The correct option is A.

The term volume denotes the capacity that an object can hold. For example if a beaker can hold 100 mL of water then the volume of the beaker is said to be 100 mL. It is represented by the symbol 'V'.

The three dimensional space occupied by the matter is given by the term volume. The SI unit of volume is m³.

Here the volume of three tablets is 600 cm³. Then the volume of one tablet is:

V = 600 / 3 = 200 cm³

Hence the volume produced by six tablets is:

V = 200  × 6 = 1200 cm³.

Thus the volume of six tablets is  1200 cm³.

Thus the correct option is A.

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Answer:

10

s=8

o=2

Hope it helps to

Answer:

82.9% Is the percent yield

Explanation:

First, we need to balance the equation.

Ca(CO3) + 2HCl → H2O + CO2 + CaCl2

Since the problem tells you that the excess reactant is Ca(CO3), we just need to Stoichiometry to solve for the theoretical yield.

[tex]\frac{200g HCl}{1}[/tex] x [tex]\frac{1 mole HCl}{36.46gHCl}[/tex] x [tex]\frac{1 mol CO2}{2molHCl}[/tex] x [tex]\frac{44.01CO2}{1molCO2}[/tex] =120.707 g (theoretical yield)

Take your actual yield of 100g, divide that by 120.707, then multiply that decimical by 100.

Answer:

Explanation:

NaCl – Sodium chloride

Other names: {{unbulleted list Saltb Table salt

Appearance: Colorless cubic crystals

CaS – Calcium sulfide

Other names: Calcium monosulfide

Hepar calcies Sulfurated lime

2 × 10²⁴ atoms Co

Math

Pre-Algebra

Order of Operations: BPEMDAS

Chemistry

Atomic Structure

Stoichiometry

Step 1: Define

4 mol Co (Cobalt)

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 1 sig fig.

2.4088 × 10²⁴ atoms Co ≈ 2 × 10²⁴ atoms Co

Answer:

A.pack your lunch in a reusable container each day

Explanation:

done!!!mark me the brainliest

Answer:

A I took this quiz today and got it right.

Answer:

Tetraselenium tetranitride

Common Name Tetraselenium tetranitride

CAS Number 12033-88-4 Molecular Weight

Density N/A Boiling Point

Molecular Formula Se4N4 Melting Point

MSDS N/A Flash Point

Chemical formulas are the representation of the chemical elements with their symbols. The chemical formula for the tetraselenium tetranitride compound is S₄N₄.

A chemical formula is the representation of the chemical molecule and compound by their symbols and the number of the constituent in the structure. It is represented by the use of the chemical symbol, numbers in superscript and subscript, parentheses, and signs like - and +.

The chemical formula for the tetraselenium tetranitride compound must contain the element symbol of selenium (S) and nitride (N). There are four numbers of both the elements and hence can be represented by, S₄N₄.

Therefore, S₄N₄ is the chemical formula for tetraselenium tetranitride.

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Answer:

Refresh your page or if that doesn't work, close your tab and try to click it again or restart your pc

Explanation:

Answer:if you can't close the tabs I suggest try and restart the computer

Explanation:

Answer:

A

Explanation:

the type of soil the tulips receive_ with or without fertilizers

first one: nitrogen

ammonia (NH3)

//

3. sulfur

sulfur dichloride (SCl2)

//

4. neither (xenon is a noble gas)

//

5. fluorine

hydrogen monoflouride (HF)

//

I'm not too confident with my naming skills but the chemical formula should be right.

Answer:

this is the minutes and hours this is representing

Answer:

Summer

Explanation:

Earth's tilted axis causes the seasons. Throughout the year, different parts of Earth receive the Sun's most direct rays. So, when the North Pole tilts toward the Sun, it's summer in the Northern Hemisphere. And when the South Pole tilts toward the Sun, it's winter in the Northern Hemisphere.

Hope it helped!! Please mark as Brainliest!

Answer:

Summer took the test and got it right

Explanation:

Which season will the northern hemisphere experience when the axis of Earth is tilted towards the sun?

Summer

Answer:

they cant relxax or the ball woud not be in your have it would fall bec there is no stranth for your musseles

Explanation:

Explanation:

Solar energy is the radiant energy emmitted from the Sun. It is the electromagnetic energy

amount of work done is equal to l/h

so 50/3=16.66667

round your ans to 2 significant figure

so your ans will be 17m/kg

Answer:

The answer is D Bill Bass

Explanation:

Remember it from the lesson and I took the test.

Answer:

41.88375 g Fe

Explanation:

Using stoichiometry, we can do this problem. First, we put our given. Then we create an equation using the molar mass of Fe (found on the periodic table, which was 55.845 g Fe), and the resulting equation is:

[tex]0.75 mol Fe * \frac{55.845 g Fe}{1 mol Fe}[/tex]

The mol Fe's cancel, and leave us with:

41.88375 g Fe

Good luck.

Explanation:

Formula : ½ × mv² (mass×velocity)

½ × 55 × 2²= ½×55×4=110J

(½ is also equivalent to 0.5)

J = Joules