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4 years ago

BRAINLIESTTT ASAP!! PLEASE ANSWER :)

Chemistry

2 answers:

Verizon [17]4 years ago

7 0

Answer:

Although I won't describe the Periodic Table for Trends in my own words cuz that would be much harder to digest, I will show you a picture to demonstrate it in a more simple way:

Explanation:

The arrows indicate the direction of increase in trend by the way.

Arte-miy333 [17]4 years ago

4 0

Non-Metal
Nonmetal or non-metal is a chemical element that does not have the properties of a metal. Some are gases including: hydrogen, helium, oxygen, nitrogen, fluorine, neon, or radon and many others. An example of a solid that is a nonmetal is sulfur. ... Usually, gases or brittle solid are non metals
Metal
In chemistry, a metal is an element that readily forms positive ions (cations) and has metallic bonds. Metals are sometimes described as a lattice of positive ions surrounded by a cloud of delocalized electrons.

Read more on Brainly.com - brainly.com/question/13791940#readmore

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Which evidence suggests that tulip populations may be affected by a warming climate?

zalisa [80]

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5 0

3 years ago

iron is made by a reduction of iron oxide with carbon monoxide. Fe2O3+3CO-2Fe+3CO2. Calculate the mass of iron that can be forme

lyudmila [28]

Answer:

Mass = 88.12 g

Explanation:

Given data:

Mass of iron oxide = 126 g

Mass of iron formed = ?

Solution:

Chemical equation:

Fe₂O₃ + 3CO → 2Fe + 3CO₂

Number of moles of iron oxide:

Number of moles = mass/molar mass

Number of moles = 126 g/ 159.69 g/mol

Number of moles = 0.789 mol

Now we will compare the moles of iron with iron oxide.

Fe₂O₃ : Fe

1 : 2

0.789 : 2/1×0.789 = 1.578 mol

Mass of iron:

Mass = number of moles ×molar mass

Mass = 1.578 mol × 55.84 g/mol

Mass = 88.12 g

4 0

3 years ago

A sample of an ideal gas has a volume of 2.31 l at 287 k and 1.10 atm. calculate the pressure when the volume is 1.45 l and the

balu736 [363]

Hello!

The pressure of the Ideal Gas when the volume is 1,45 L and the temperature is 298 K is 1,82 atm.

To solve this problem we need to apply the Ideal Gas Law for the initial conditions and the final ones, clearing the equation for the number of moles (n) and the ideal gas constant (R) which remain constant:

$P_n*V_n=n*R*T_n \\ \\ n*R= \frac{P_n*V_n}{T_n}$

Now we match n*R for the initial conditions (1) and the final ones (2), clearing the equation for P₂

$\frac{P_1*V_1}{T_1}= \frac{P_2*V_2}{T_2} \\ \\ P_2= \frac{P_1*V_1*T_2}{T_1*V_2}= \frac{1,10 atm*2,31 L *298 K}{287K*1,45 L}=1,82 atm$

Have a nice day!

7 0

3 years ago

Order the steps of the experiment below according to the scientific method. 4 Paul calculated the average time to dissolve each

MaRussiya [10]

Answer:

Explanation:

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3 years ago

A gaseous compound has a density of 1.90 g/L at 51.1 ∘C and 1.09 bar . Assuming ideal behavior, calculate the molar mass of the

marysya [2.9K]

Answer:

1.90

Explanation:

5 0

3 years ago