Ask question

Ask question

All categories

4 years ago

11

Perform the given operation and report the answer with the appropriate number of significant figures. 1.307 m + 45.2 m= ____ m i

have been stuck on this one forever please help!

1 answer:

damaskus [11]4 years ago

3 0

Answer:

46.5

Explanation:

1.307 m + 45.2 m = 46.507

Rounded to the correct amount of signifigant figures it would be 46.5.

You might be interested in

PLLLZZZZZZZZZZZZZZZ HELPPPPPP MEEEEEEEEEEEE THHHXXX

Olegator [25]

The awnser to your question would be B

3 0

3 years ago

Find the oxidising agent and explain why

Goshia [24]

Answer:

the process by which plants make their food by there own with the help of sunlight and water is known as photosynthesis

6 0

3 years ago

Read 2 more answers

1st Define Covalent bond and it's type

irakobra [83]

Answer:

COVELENT BOND:-The chemical bond formed by the sharing of an electron pair between two atoms so that both the atoms get their octet complete is called covalent bond

SINGLE COVELENT BOND:-it is formed by sharing of one pair of electron between two atoms
DOUBLE COVELENT BOND:-it is formed by sharing of two pair of electron between two atoms
TRIPLE COVELENT BOND:- it us formed by sharing of three pair of electron beyween two atoms

2)Electron dot structures of carbon dioxide:-Oxygen atom contains 6 valence electrons which form 2 lone pairs. Since it is bonded to only one carbon atom, it must form a double bond. Carbon atom contains four valence electrons, resulting in zero lone pairs. Therefore, it is doubly bonded to each oxygen atom.

3))Sulfur has an atomic number is 16 with the

symbol as 'S'

The electronic configuration of sulfur is said to be 2,8,6
The valence electrons present in sulfur is 6.
Sulfur forms an octet structure by connecting 8 sulfur atoms with each other by the formation of single covalent bonds.
The sulfur molecule's chemical formula is S8.
Sulfur is usually used in the manufacture of sulphuric acid.

Explanation:

<h2>HOPE IT HELPS YOU #ITZADMIRER</h2>

5 0

3 years ago

New industrial plants for acetic acid react liquid methanol (Mm=32g/m) with carbon monoxide in the presen of a catalyst. In an e

Daniel [21]

Answer:

21.42 g

Explanation:

To know this, you need to put the equation that is taking and it's the following:

CH3OH (Methanol) + CO ---------> CH3COOH (Acetic acid)

We already know the mm of methanol, and the mm for CO is:

AM of C = 12 g/mol

AM of O = 16 g/mol

AM of H = 1 g/mol

MM of CO = 12 + 16 = 28 g/m

For acetic acid: 12 + 3(1) + 12 + 16*2 + 1 = 60 g/mol

Now that we know the molar mass of each molecule, let's calculate the number of moles of methanol and CO, because it's easier to work with moles than the grams

moles of methanol = 15/32 = 0.469 moles

moles of CO = 10/28 = 0.357 moles

According to the equation 1 mole of methanol reacts completely with 1 mole of CO. However, in this case, we can see that methanol exceed the CO, so, the CO is the limitant reactant so:

moles reactants of methanol: 0.469 - 0.357 = 0.112 moles.

moles of acid produced: 0.357 moles

This is because we have a ratio of 1:1 between methanol and CO. As methanol exceed CO, the CO is consumed completely leaving a remanant of methanol behind. the whole moles of CO are used, and appears as product of acetic acid, therefore, the moles of acetic acid are the same of CO.

Now with the molar mass of acid, let's calculate the gram of acid, and yield:

g = 0.357 * 60 = 21.42 g of acetic acid.

This is the theorical yield of acetic acid.

5 0

4 years ago

Label the slightly negative and slightly positive parts of the water molecule. Use this illustration to explain polarity.

Daniel [21]

The water molecule is a polar molecule which would mean that there is an uneven distribution of charges. Each molecule of water has partial positive and partial negative end. The partial positive charges is found in the H atoms while the partial negative is at the O atom. This is due to the the unequal sharing of the electrons.

4 0

3 years ago