All categories

3 years ago

Describe the error (what rule does it violate) if there is one in each of the following:

Chemistry

1 answer:

Free_Kalibri [48]3 years ago

4 0

Answer:

prolly the gay one

Explanation:

You might be interested in

Express scientific notation 12 thousandth

Sever21 [200]

12 thousandth is the same as 0.012, so to put something in scientific notation you move the decimal point to the left or right until it is between the first two numbers. So:

Moving the decimal for 0.012 to between the first two numbers, we get: 1.2

For every move of the decimal place to get there, we divide/multiply by 10 each time. In this case, we multiply by 10 each time.

To get to 1.2, we had to move the decimal 2 times, so the answer is 1.2×10^-2

When you move the decimal to the right, the value of the power is negative, and when you move it to the left it is positive.

4 0

3 years ago

Calculate the molecular mass of the nonionic solutes.

3241004551 [841]

Answer:

The molecular mass of the nonionic solutes is 124,90 g/m

Explanation:

This is the formula for boiling point elevation.

ΔT = Kb . m

Where ΔT = Tb (solution) - Tb (pure solvent)

Where Kb = the ebullioscopic constant

Where m = molality (moles of solute in 1kg of solvent)

Kb for water is 0,512°C/molal

100,680°C - 100°C = 0,512°C/molal . m

0,680°C = 0,512°C/molal . m

0,680°C /0,512 molal/°C = m

1,32 molality (This are my solute moles in 1kg (1000g) of solvent but I have just 390 g, so let's build the rule of three)

1000 g _____ 1,32 moles

390 g ______ (3,90 g . 1,32 moles) / 1000 g = 0,5148 moles

Molecular mass = g/ mol (mass/moles)

64,3 g /0,5148 moles = 124,90 g/m

8 0

3 years ago

Scientific notation of (4.5+ 17) x 104 -1.5 x 104

Naddik [55]

Answer:

4.5× 104 + 1.7× 105. Firstly, we need to ensure that both exponents have the same value. Thus, we need to change the value of 1.7 x 105 to 17 x 104. If both already had the same exponential value, you can neglect this step. 4.5× 104+ 17 × 104. Now, we will take exponentials common and add the decimal values. (4.5+ 17) × 104 | 21.5 × 104. Similar steps are taken for the subtraction phase we just need to retrace our steps and find differences rather than sums. These lessons and worksheets show you how to perform sums and differences with values that are in scientific notation.

Explanation:

I think it helps you

6 0

4 years ago

Please help me I really don’t understand

Leokris [45]

I dont understand life, for example, look at my username.

4 0

4 years ago

Which change does not increase the speed of reaction between zinc and hydrochloric acid?

Mademuasel [1]

Any factor that causes molecules to collide more frequently speeds up the reaction rate. This is achieved by an increase of the reactants concentration, surface area, raised temp. , raised pressure of gaseous reactant, or an addition of catalysts to the reactant

3 0

3 years ago

Read 2 more answers