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3 years ago

What is the difference between speed and velocity?

Chemistry

1 answer:

Amanda [17]3 years ago

6 0

Answer:

(B) direction

Explanation: Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object's movement.

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What is the molecular formula for chloroform? none of these choices CH3C CHCI3 CH2C12 CCI4

dangina [55]

Answer:

CHCI₃

Explanation:

Chloroform, IUPAC name, trichloromethane, is organic compound with the molecular formula CHCl₃. It is colorless and sweet-smelling liquid having high density which is produced on a large scale precursor of PTFE , and for various refrigerants .

Chloroform , is a powerful euphoriant , anxiolytic , anesthetic and sedative when inhaled or ingested .

4 0

3 years ago

Identify the formula of the precipitate formed when solutions of sodium perchlorate and nickel(II) nitrate are mixed. If no prec

kumpel [21]

Answer:

2NaClO₄ (aq) + Ni(NO₃)₂ (aq) → 2NaNO₃ (aq) + Ni(ClO₄)₂ (aq)

No reaction

Explanation:

NaClO₄ → Sodium perchlorate

Ni(NO₃)₂ → Nickel (II) nitrate

All the salts from nitrate are soluble salts

All the salts from perchlorate are soluble salts except for the KClO₄

5 0

3 years ago

C. Write a complete ionic equation for the reaction and identify the spectator ions.

pickupchik [31]

Answer is 6 Na + (aq) +3 CA swaured + 6 CI- (aq)

7 0

3 years ago

Calculate the mass percentage of Na2SO4 in a solution containing 10.9 g Na2SO4 in 482 g water.

boyakko [2]

Answer:

The answer to your question is 2.21 %

Explanation:

Data

mass of Na₂SO₄ = 10.9 g

mass of H₂O = 482 g

Formula

Percent by mass = $\frac{mass of solute}{total mass}$ x 100

Substitution

$Percent by mass = \frac{10.9}{10.9 + 482}$ x 100

Simplification and result

$Percent by mass = \frac{10.9}{492.9}$ x 100

Percent by mass = 0.022 x 100

Percent by mass = 2.21

3 0

3 years ago

Read 2 more answers

What is the mass of a titanium alloy that has a heat of fusion of 422.5 joules/gram and requires 2,960 joules of energy to melt

romanna [79]

Answer:- Mass of the titanium alloy is 7.01 g, choice C is correct.

Solution:- The heat of fusion is given as 422.5 joules per gram and it also says that 2960 joules of heat is required to melt the metal completely.

The suggested equation is, $Q=mH_f$

where Q is the heat energy, m is the mass and Hf is the heat of fusion.

Since, we are asked to calculate the mass, the equation could be written as:

$m=\frac{Q}{H_f}$

Let's plug in the values in it:

$m=\frac{2960J}{\frac{422.5J}{g}}$

m = 7.01 g

So, the mass of the titanium alloy is 7.01 g, choice C is correct.

7 0

3 years ago