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Alex_Xolod [135]
3 years ago
10

3. A rocket sled accelerates from 10 m/sec to 50 m/sec in 2 seconds. What O points

Chemistry
1 answer:
FrozenT [24]3 years ago
6 0

Answer:

b

Explanation:

by using formula

a=(v-u)/t

where a= acceleration

v = initial velocity = 10 m/s

u= final velocity =50 m/s

t = time taken = 2s

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What volume of a substance will have a mass exactly 750 g if the specific gravity of the substance is 12.2
Ket [755]

The volume of the substance is 61.4 litres.

Explanation:

Specific density is the ratio of density of a substance at a given temperature with the density of reference substance.

Data given:

mass = 750 grams

specific gravity = 12.2

volume=?

The formula to be used:

Specific gravity = \frac{density of the object}{density of the reference substance}

suppose the other substance is water so its density is 1g/ml at 4 degrees

Putting the values to the equation:

density of the object = 1 x12.2

density of the substance = 12.2

Now using the formula:

density = \frac{mass}{volume}

putting the values in the equation:

volume = \frac{750}{12.2}

            = 61.4ml is the volume of the substance.

3 0
3 years ago
Drag each label to the correct location on the image identify the parts of the energy diagram
diamong [38]
If you would’ve attached a picture I’m sure it would’ve been a lot easier.
4 0
3 years ago
Read 2 more answers
What is the density of an object having a mass of 4.000 g and a volume of 39.0 cubic centimeters?
Vika [28.1K]

Answer:

The answer is

<h2>0.103 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

density =  \frac{mass}{volume}

From the question

mass = 4 g

volume = 39.0 mL

The density is

density =  \frac{4}{39}  \\  = 0.102564102564...

We have the final answer as

<h3>0.103 g/mL</h3>

Hope this helps you

6 0
4 years ago
Elemental analysis of a compound, once used as a pesticide, was found to be 74.2% carbon, 8.64% hydrogen, and 17.2% nitrogen. Wh
Vika [28.1K]
74.2/16.00=4.6381.432=3.2*4=13
8.64/1.01=8.554/1.432=5.9=6*4=24
17.2/12.01=1.432/1.432=1*4=4

C13H24N4
8 0
3 years ago
450g of chromium (III) sulfate reacts with excess potassium phosphate. How many grams of potassium sulfate will be produced? (AN
Oduvanchick [21]

Answer:

599.26 grams of potassium sulfate will be produced.

Explanation:

Cr_2(SO_4)_3(aq)+2K_3PO_4(aq)\rightarrow 2CrPO_4(s)+3K_2SO_4(aq)

Moles of chromium (III) sulfate = \frac{450 g}{392 g/mol}=1.1480 mol

According to reaction, 1 mole of chromium (III) sulfate gives 3 moles of potassium sulfate.

Then 1.1480 moles of chromium (III) sulfate will give:

\frac{3}{1}\times 1.1480 mol=3.4440 mol

Mass of 3.4440 moles of potassium sulfate:

= 3.4440 mol × 174 g/mol = 599.26 g

599.26 grams of potassium sulfate will be produced.

8 0
3 years ago
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