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3 years ago

What is the molar mass, in grams, of a mole of an element equal to?

Chemistry

1 answer:

insens350 [35]3 years ago

5 0

Answer:

B. the atomic weight of the element

Explanation:

since it talks about mass i think weight

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B. the aldaric acid of l-idose is the same as the aldaric acid of which sugar?

Artemon [7]

Yes it does because i just read it in a book im pretty sure but idk exactly

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3 years ago

When placed in a freezer, liquid water turns into solid ice. What best describes this change?

skelet666 [1.2K]

Answer:

The water molecules slow down, stronger attractions form between them, and the molecules are pulled closer together.

Explanation:

In solids the packing of the particles is closer and tighter thus increasing the intermolecular attraction. This makes solids rigid with a definite shape, size and volume. On the other hand in liquids the packing of the particles is loose thus decreasing the intermolecular attraction. This makes liquids able to flow, and takes the shape and volume of the container in which they are placed.

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2 years ago

slader An experiment is carried out where 13.9 g of solid NaOH is dissolved in 250.0 g of water in a coffee-cup calorimeter. Dis

kvv77 [185]

Answer:

The mass of the surrounding is $M_t = 263.9 \ g$

Explanation:

From the question we are told that

The mass of $NaOH$ is $m = 13.9 \ g$

The mass of water is $m_w = 250.0g$

The chemical equation for the dissociation process is

$NaOH _{(s) } ---> Na^{+}_{(aq)} + OH^{-} _{(aq)}$

The specific heat capacity of the mixture is $c_p = 4.18 J g^{-1} C^{-1}$

The combined mass of the solution is

$M_t = 13 + 250$

$M_t = 263.9 \ g$

The mass of the surround here is the mass of the coffee-cup calorimeter and this contain the mixture ( water and the NaOH ) so the mass of the surrounding is

$M_t = 263.9 \ g$

3 0

3 years ago

A jet airplane has a velocity of 1145 knots. A knot is 1 nautical mile (nm)/hr. A nautical

ra1l [238]

Answer:

589.038 m/s

Explanation:

i dont know if did this right tho

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1 year ago

Secondary consumers are eaten by?

ivann1987 [24]

They are eaten by Tertiary consumers

3 0

2 years ago

Read 2 more answers