All categories

3 years ago

What is the ‘structural formula’ of water ? BRAINLIEST ANSWER !!

Chemistry

2 answers:

Natalija [7]3 years ago

8 0

H2O, one Oxygen in the middle, surrounded by 2 hydrogen, usually close to each-other, which gives it polarity

vaieri [72.5K]3 years ago

6 0

Water is a colorless, tasteless and odorless substance which is considered to be an universal solvent.

Though you have asked for the structural formula of water which shows the arrangement of the molecules in a compound, but since I cannot draw it here so I will explain in words and hope to make it clear.

Water is made up of Hydrogen and Oxygen in the ratio 2:1 respectively. Therefore its chemical formula is H2O, meaning that each molecule of water contains one Oxygen atom in the middle combined with 1 Hydrogen atom at 'each side' which are bonded covalently.

You might be interested in

Which best describes how Dalton's early theory of atomic structure differs with modern theories? He did not know -

Alja [10]

John Dalton introduced a theory proposing that elements vary because of the mass of their atoms.
He said in his theory that all matter is made up of indivisible blocks called atoms. He also stipulated in his theory that elements are identical thus, have different sizes and masses.
Dalton's theory was different from Niels Bohr who proposed a new atomic model which was also commonly known as the modern atomic theory. Bohr's theory says that atoms are arranged in circular orbits around the nucleus. He patterned his model as the solar system.

4 0

3 years ago

The solubility of a sample will ____________ when the size of the sample increases.

devlian [24]

The solubility of a sample will decrease when the size of the sample increases.

When the Size of sample is bigger, it means there is more particles that make up that sample so the amount of solvent to dissolve the sample will also be in the greater amount. Thus, when the sample size increases the solubility decrease. We can also say that size of sample and solubility are inversely proportional to each other.

8 0

3 years ago

How many molecules are contained in 103.4g of sulfuric acid?

Ierofanga [76]

<h3>Answer:</h3>

1.827 × 10²⁴ molecules H₂S

<h3>General Formulas and Concepts:</h3>

Math

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Chemistry

Compounds

Writing Compounds
Acids/Bases

Atomic Structure

Reading a Periodic Table
Using Dimensional Analysis
Avogadro's Number - 6.022 × 10²³ atoms, molecules, formula units, etc.

<h3>Explanation:</h3>

Step 1: Define

103.4 g H₂S (Sulfuric Acid)

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of H - 1.01 g/mol

Molar Mass of S - 32.07 g/mol

Molar Mass of H₂S - 2(1.01) + 32.07 = 34.09 g/mol

Step 3: Convert

Set up: $\displaystyle 103.4 \ g \ H_2S(\frac{1 \ mol \ H_2S}{34.09 \ g \ H_2S})(\frac{6.022 \cdot 10^{23} \ molecules \ H_2S}{1 \ mol \ H_2S})$
Multiply: $\displaystyle 1.82656 \cdot 10^{24} \ molecules \ H_2S$

Step 4: Check

Follow sig fig rules and round. We are given 4 sig figs.

1.82656 × 10²⁴ molecules H₂S ≈ 1.827 × 10²⁴ molecules H₂S

4 0

3 years ago

What is the pH of a solution of 0.600 M K2HPO4, potassium hydrogen phosphate?

AleksAgata [21]

When pKas of polyprotic intermediates have a difference of 2 or more you just average them using the equation: pH = (pKa2 + pKa3) / 2 
pKa2 = -log(Ka2) ; pKa3 = -log(Ka3) 
so, for this problem, REGARDLESS OF THE CONCENTRATION GIVEN, the answer is: 
pH = (7.2076+12.3767) / 2 
pH = 9.79

5 0

4 years ago

Read 2 more answers

Molecular iodine, I2 (g), dissociates into iodine atoms at 545K with a first order rate constant of 0.344 1/s. If you start with

Dennis_Churaev [7]

Answer:

0.00915 M of $I_2$ remain after 5.16 seconds.