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3 years ago

HURRY PLEASE

Chemistry

2 answers:

VikaD [51]3 years ago

8 0

what is the question? then i can maybe help

OleMash [197]3 years ago

4 0

A Maglev system is a system that uses superconducting magnets, this is an advantage as friction between the system and the ground is decreased as it literally hovers above it. The system of course however is guided. The answer is decreases friction because it used the non-contact force of superconducting magnets to move.

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What does frequency describe? A.distance from crest to crest or from trough to trough on a wave B.Number of waves that pass a gi

Shalnov [3]

Answer:

B.Number of waves that pass a given point in a given time.

3 0

3 years ago

Mass box A = 10 grams; Mass box B = 5 grams; Mass box C—made of one A and one B Mass ratio A/B =

LUCKY_DIMON [66]

Answer:

mass ratio of A/B is 2:1

Explanation:

Since the mass of box A = 10g

mass of box B = 5g

Mass of box C = mass of box A + mass of box

A ratio compares two quantities. To find the ratio of the two boxes:

Ratio of A to B = $\frac{mass of A}{mass of B}$

Ratio of A to B = $\frac{10grams}{5grams}$ = 2

The mass ratio is 2:1 i.e box A has twice the mass of B

8 0

3 years ago

Which type of bond forms when two or more atoms share electrons?.

shepuryov [24]

Answer:

Covalent

Explanation:

Covalent is the sharing of electrons and Ionic is transferring of electrons.

7 0

2 years ago

Read 2 more answers

What principle requires that a chemical equation be balanced?

Dafna1 [17]

The principle that requires that a chemical equation be balanced would be the law of definite proportions. It <span>states that a given chemical compound always contains its component elements in fixed ratio (by mass) and does not depend on its source and method of preparation. Hope this answers the question.</span>

7 0

3 years ago

Calculate the freezing point of a 0.08500 m aqueous solution of nano3. the molal freezing-point-depression constant of water is

Citrus2011 [14]

Depression in freezing point (Δ $T_{f}$ ) = $K_{f}$ ×m×i,
where, $K_{f}$ = cryoscopic constant = $1.86^{0} C/m$ ,
m= molality of solution = 0.0085 m
i = van't Hoff factor = 2 (For $NaNO_{3}$ )

Thus, (Δ $T_{f}$ ) = 1.86 X 0.0085 X 2 = $0.03162^{0}C$

Now, (Δ $T_{f}$ ) = $T^{0}$ - T
Here, T = freezing point of solution
$T^{0}$ = freezing point of solvent = $0^{0}C$
Thus, T = $T^{0}$ - (Δ $T_{f}$ ) = - $0.03162^{0}C$

8 0

3 years ago

Read 2 more answers