All categories

4 years ago

1. Why do we classify things?

Chemistry

1 answer:

mario62 [17]4 years ago

5 0

Answer:

to keep it organized in each groups

Explanation:

You might be interested in

What conditions favor the formation of ionic compounds from elements? both atoms must be non metals. you must have a metal and a

astraxan [27]

You must have a metal and a non-metal

6 0

4 years ago

You wish to prepare 100 mL of 0.600 M HCl from concentrated HCl (12.85 M). You are provided with a 100 mL volumetric flask and a

Soloha48 [4]

Answer:

Because we need to dispense 4.7 mL, the volume reading in the pipet is the 5.3 mL line.

Explanation:

First we use C₁V₁=C₂V₂ in order to <u>calculate the required volume of concentrated HCl</u> (V₁):

12.85 M * V₁ = 0.600 M * 100 mL

V₁ = 4.7 mL

<u>So we need to dispense 4.7 mL of the concentrated HCl solution</u>. The mark in the pipet that would contain that volume would be 10.0 - 4.7 = 5.3 mL

8 0

3 years ago

A bicycle has a momentum of 25.00 kg x m/s and a velocity of 2.5 m/s. What is the bicycle’s mass

max2010maxim [7]

Answer:

Explanation:

The mass of the bicycle can be found by using the formula

$m = \frac{p}{v} \\$

p is the momentum

v is the velocity

From the question we have

$m = \frac{25}{2.5} \\$

We have the final answer as

Hope this helps you

5 0

4 years ago

PHEASE HELP ASAP

Veronika [31]

Given the balanced chemical equation for combustion of propane:

$C_{3}H_{8}+5O_{2}-->3CO_{2}+4H_{2}O$

Moles of propane $C_{3}H_{8}$ =3.6 mol

Propane is the limiting reactant as the other reactant oxygen is said to be present in excess.

Amount of products formed would depend on the moles of limiting reactant.

Mole ratio of water to propane as per the balanced chemical equation

= $\frac{4molH_{2}O }{1molC_{3}H_{8}}$

Calculating the moles of water produced from 3.6 mol propane:

$3.6molC_{3}H_{8}*$ $\frac{4molH_{2}O }{1molC_{3}H_{8}}$

= 14.4mol $H_{2}O$

Theoretical yield of water = 14.4 mol

Actual yield = 12 mol

Percent yield = $\frac{ActualYield}{TheoreticalYield}*100$

= $\frac{12 mol}{14.4 mol}*100=83.3%$

6 0

3 years ago

What is the formula antimony trichloride

Zielflug [23.3K]

Answer and hopefully this helps.

5 0

3 years ago