All categories

3 years ago

Which of the following could be considered a scientific statement?

Chemistry

2 answers:

Taya2010 [7]3 years ago

7 0

X rays have a lower frequency than microwaves would be the scientific statement.

lidiya [134]3 years ago

5 0

Answer: X‒rays have a lower frequency than microwaves.

Explanation:

Hi, a scientific statement contains an objective description of the theme aborded.

It doesn't contain subjectivity or words like: better, beautiful or favourite.

The fourth sentence doesn´t contain subjectivity, so, is a scientific statement. It just describes the x rays objective functions.

You might be interested in

HELP !!!!!!! ASAP !!!!!!!!!!!!!!

Dmitry [639]

The color changes, heat change, smell change, are a few

4 0

3 years ago

Read 2 more answers

What are the spectator ions in the equation below? Select all that apply.

Licemer1 [7]

Answer:

H+ and NO3- ions

Explanation:

The Pb²+ ions react with the SO4²‐ ions to form a solid precipitate, i.e. they bond together and undergo a phase change;

On the contrary, the H+ and NO3- ions are aqueous ions before the reaction and the same after the reaction, i.e. they don't change;

Hence, the H+ and NO3- ions are spectator ions

The way to do this type of question is to consider what changes and what doesn't, look at phase changes and oxidation state changes

7 0

2 years ago

What is a total ionic equation ?!

vodomira [7]

An ionic equation contains two ions in the full equation

5 0

3 years ago

PLEASE HELP FILL OUT THIS CHART! ASAP THANK YOU

Svet_ta [14]

I will need a picture if the periodic table

6 0

2 years ago

For the elementary reaction NO3 + CO → NO2 + CO2 the molecularity of the reaction is ________, and the rate law is rate = ______

blagie [28]

Answer: For the elementary reaction $NO_3+CO\rightarrow NO_2+CO_2$ the molecularity of the reaction is 2, and the rate law is rate = $k[NO_3]^1[CO]^1$

Explanation:

Order of the reaction is defined as the sum of the concentration of terms on which the rate of the reaction actually depends. It is the sum of the exponents of the molar concentration in the rate law expression.

Elementary reactions are defined as the reactions for which the order of the reaction is same as its molecularity and order with respect to each reactant is equal to its stoichiometric coefficient as represented in the balanced chemical reaction.

Molecularity of the reaction is defined as the number of atoms, ions or molecules that must colloid with one another simultaneously so as to result into a chemical reaction. Thus it can never be fractional.

For elementary reaction $NO_3+CO\rightarrow NO_2+CO_2$ , molecularity is 2 and rate law is $rate=k[NO_3]^1[CO]^1$

3 0

2 years ago