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3 years ago

Name two solid liquid and gaseous element at the normal temperature and normal pressure

Chemistry

1 answer:

liubo4ka [24]3 years ago

7 0

Answer:

Solid: calcium and potassium

Liquid: mercury and bromine

Gaseous: oxygen and fluorine

Explanation:

Matter exists in three different states namely: solid, gaseous and liquid. Elements that are found in nature are classified as matter. Since, these elements are grouped as matter, they can either be found as either solids, liquids or gases at normal temperature and pressure.

At normal temperature (20°C or 293K) and pressure (1 atm), the following elements are found to exists in the respective state of matter:

Solid: Calcium (Ca) and potassium (K)

Liquid: Mercury (Hg) and bromine (Br)

Gaseous: Oxygen (O) and fluorine (F)

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43 milliliters of water weighs 43 g. what is the density of the water?

Anastaziya [24]

Answer:

$\rho =1g/mL$

Explanation:

Hello,

In this case, since the density is defined as the ratio between the mass and the volume as shown below:

$\rho =\frac{m}{V}$

We can compute the density of water for the given 43 g that occupy the volume of 43 mL:

$\rho =\frac{43g}{43mL}=1g/mL$

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3 years ago

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lara [203]

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3 0

3 years ago

10 20 30 40 50 60 70 80 90 100g 100 200 300 400 500g 0 1 2<b

r-ruslan [8.4K]

Answer:

2047

Explanation:

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2 years ago

How many moles are in 0.821g of lead?

Ivenika [448]

Answer:

3.96 × 10⁻³ mol Pb

Explanation:

Step 1: Find molar mass

Pb (Lead) - 207.2 g/mol

Step 2: Use Dimensional Analysis

$0.821 \hspace{2} g \hspace{2} Pb(\frac{1 \hspace{2} mol \hspace{2} Pb}{207.2 \hspace{2} g \hspace{2} Pb} )$ = 0.003962 mol Pb

Step 3: Simplify

We have 3 sig figs

0.003962 mol Pb ≈ 0.00396 mol Pb

0.00396 mol Pb = 3.96 × 10⁻³ mol Pb

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3 years ago

Explain why heating a contained gas that is held at a constant volume increases its pressure.

user100 [1]

Answer:

its not able to release the pressure

Explanation:

its not able to release pressure

8 0

3 years ago

Read 2 more answers

Name two solid liquid and gaseous element at the normal temperature and normal pressure​

Name two solid liquid and gaseous element at the normal temperature and normal pressure