All categories

4 years ago

What does it mean foe a hypothesis to be testialbe

Chemistry

1 answer:

marin [14]4 years ago

5 0

Answer:

For a hypothesis to be testable means that is it possible to make observations that agree or disagree with it. This statement may or may not be true, but it is not a scientific hypothesis. That's because it can't be tested.

Explanation:

You might be interested in

a store receives a shipment of defective balloons. each has a tiny pinhole of the same size. if one balloon is filled with heliu

densk [106]

YOu should use the Graham's Law of Diffusion

R1/ R2 = √(M2/ M1)

Helium is R1, air is R2.

I'm not sure if your professor gives density or molar mass for this problem? You need M2 and M1 to solve for the rates of diffusion.

8 0

4 years ago

What is the molarity of HCl found in a titration where 50 ml of HCl is titrated with 50 ml of .1 M NaOH? Needs to be answered as

Aneli [31]

0.1 mol/L . The concentration of the HCl is 0.1 mol/L

a) Write the <em>balanced chemical equation </em>

HCl + NaOH → NaCl + H2O

b) Calculate the <em>moles of NaOH </em>

Moles of NaOH = 0.050 L NaOH x (0.1 mol NaOH/1 L NaOH)

= 0.0050 mol NaOH

c) Calculate the <em>moles of HCl </em>

Moles of HCl = 0.0050 mol NaOH x (1 mol HCl/1 mol NaOH)

= 0.0050 mol HCl

d) Calculate the <em>molar concentration</em> of the HCl

<em>c</em> = moles/litres = 0.0050 mol/0.050 L = 0.1 mol/L

7 0

4 years ago

How we can measure the density of different wooden object?

Novay_Z [31]

Seeing how much of the object can take with an amount of pressure

5 0

4 years ago

Calculate the percent yield of a reaction where a student collected 16.8 grams of product and was expecting to collect 49.7 gram

masya89 [10]

Answer:

$\boxed{\text{33.8 \%}}$

Explanation:

$\text{\% yield} = \dfrac{\text{actual yield}}{\text {theoretical yield}} \times\text{100 \%}$

Data:

Actual yield = 16.8 g

Theoretical yield = 49.7 g

Calculation:

$\text{\% yield} = \dfrac{\text{16.8 g}}{\text {49.7 g}} \times\text{100 \%} = \boxed{\textbf{33.8 \%}}$

8 0

3 years ago

An equilibrium mixture contains 0.750 mol of each of the products (carbon dioxide and hydrogen gas) and 0.200 mol of each of the

sasho [114]

1.302 moles of carbon dioxide would have to be added

<h3>Further explanation</h3>

The equilibrium constant is the value of the product in the equilibrium state of the substance in the right (product) divided by the substance in the left (reactant) with the exponents of each reaction coefficient

The equilibrium constant is based on the concentration (Kc) in a reaction

pA + qB -----> mC + nD

$\large {\boxed {\bold {Kc ~ = ~ \frac {[C] ^ m [D] ^ n} {[A] ^ p [B] ^ q}}}}$