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Kobotan [32]
3 years ago
8

How many molecules are there in 4372 grams of Na2SO4?

Chemistry
1 answer:
olga55 [171]3 years ago
7 0

Answer: 30.7 moles

Explanation:

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A ball has 2 kg* m/s of momentum when thrown with a velocity of 8 m/s outwards. Find the mass of the ball.
Advocard [28]

Answer:

\large \boxed{\text{0.25 kg}}

Explanation:

We can use the formula for momentum to calculate the mass.

\begin{array}{rcl}p & = & mv\\2 & = & m \times 8\\m & = & \dfrac{2}{8}\\\\& = & \textbf{0.25 kg}\\\end{array}\\\text{The mass of the ball is $\large \boxed{\textbf{0.25 kg}}$}

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3 years ago
If an atom, like a metal atom, has fewer valence electrons,
Gre4nikov [31]

Answer:

ionic bonding or covalent

Explanation:

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2 years ago
PLEASE HELP ASAPP!!!!! WILL MARK BRAINLIEST
Aloiza [94]

Answer:

400°C

Explanation:

22,000 cal / (0.11 cal/g°C x 500 g) = 400°C

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3 years ago
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What is the general trend for electron affinity values going across a period? The
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3 years ago
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Under strongly acidic conditions aldoses become oxidized to dicarboxylic acids called aldaric acids
horrorfan [7]

Under strongly acidic conditions aldoses become oxidised to dicarboxylic acids called aldaric acids

<h3>What are aldaric acids?</h3>

The formula for aldaric acids is HOOC-(CHOH)n-COOH, and they are a kind of sugar acids in which the sugars' terminal hydroxyl and carbonyl groups have been substituted by terminal carboxylic acids.

Aldoses are often oxidised with nitric acid to produce aldaric acids. The open-chain (polyhydroxyaldehyde) form of the sugar interacts in this reaction.

Aldoses that have both the hydroxyl function of the terminal carbon and the aldehyde function of the first carbon completely oxidised to carboxylic acid functions are referred to as aldaric acids. (Aldonic acid is produced by oxidising just the aldehyde, whereas uronic acid is produced by oxidising only the terminal hydroxyl group.) Like unoxidized sugars, aldaric acids cannot produce cyclic hemiacetals, but they occasionally can form lactose.

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