All categories

2 years ago

You are measuring the mass of different chemicals to get ready to conduct an experiment.

Chemistry

2 answers:

Alexus [3.1K]2 years ago

8 0

Answer: B) grams

Explanation:

Mass is the amount of matter contained in a substance.

It can be measured in units of kilograms (kg), grams (g), milli grams (mg) , pounds etc.These units are interconvertible.

International System of Measurement (S.I.) is the most commonly used system. As we know that there are seven fundamental SI units which are used to find derived units . These are as follows:

1) Mass - Kilogram

2) Length - meter

3) Time - Seconds

4) Electric Current - Ampere

5) Amount of substance - Moles

6) Intensity of light - Candela

7) Temperature - Kelvin

Thus International System of Measurement units used for measuring mass is grams.

Leto [7]2 years ago

4 0

Answer:

Explanation:

You might be interested in

Classify its reaction type: 2Al(s) + 2CuSO4(aq) ⟶ Al2(SO4)2 + 2Cu

AlekseyPX

Displacement reaction
Because Al goes to SO4 and
Cu goes from SO4 to Cu

This happens because Al is more reactive (higher up in the reactivity series) than Cu

4 0

3 years ago

A sample of 25mls of HCL was mixed with 25mls of KOH of the same concentration in a calorimeter. As a result the temperature ros

xxTIMURxx [149]

Ooo that cool good thing I learn from this app

4 0

3 years ago

Name the laws for 1,2, and 3

BaLLatris [955]

Answer:

1. Boyle's law

2. Charle's law

3. Ideal Gas law

Explanation:

7 0

2 years ago

A student needs to prepare 100. mL of 0.612 M Cu(NO3)2 solution. What mass, in grams, of copper(II) nitrate should the student u

Temka [501]

Answer: 11.5 grams

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution

$Molarity=\frac{n\times 1000}{V_s}$

where,

Morality = 0.612 M

n= moles of solute

$V_s$ = volume of solution in ml = 100 ml

Now put all the given values in the formula of molarity, we get

$0.612=\frac{n\times 1000}{100ml}$

$n=0.0612moles$

$Mass={\text {moles of solute }}{\times {\text {molar mass}}=0.0612moles\times 187.56g/mol=11.5g$

Therefore, the mass of copper (II)nitrate required is 11.5 grams

3 0

3 years ago

I am finding the formula of a compound that has 60% Carbon, 32% Oxygen, and 8% Hydrogen. Although, when it comes to actually cre

nataly862011 [7]

Answer:

Explanation:

To determine the molecular formula of the compound, the empirical formula must be determined first. To determine the empirical formula, the percentage of each constituent is divided by its molar mass. This is shown below

Carbon = 60/12 = 5

Oxygen = 32/16 = 2

Hydrogen = 8/1 = 8

The next step is to divide each ratio by the smallest value. The smallest value is 2. It becomes

Carbon = 5/2 = 2.5

It is approximated to 3

Oxygen = 2/2 = 1

Hydrogen = 8/2 = 4

Therefore, the empirical formula is

C3H4O

From the given relative molecular mass of the compound, the molecular formula can be determined

7 0

2 years ago