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Lilit [14]
3 years ago
5

Step 1: Gather materials and necessary information. a) You will collect the following information about your element: • Periodic

table information including type of element, atomic number, atomic mass, number of protons, number of electrons, number of neutrons, period number, group number, and group name • Physical and chemical properties of the element • When, where, and by whom the element was discovered • Where the element is found and how it is obtained • Uses for the element and/or products made from the element • Images of the element b) Be sure to keep a list of your references so you can cite them later. c) Ask your teacher where you should save your presentation as you work on it. Your teacher may also have specific guidelines about the file name you should use.
Chemistry
2 answers:
Oksi-84 [34.3K]3 years ago
6 0

Answer:

i d k

Explanation:

aksik [14]3 years ago
4 0

Answer:

We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights, that among these are Life, Liberty and the pursuit of Happiness.--That to secure these rights, Governments are instituted among Men, deriving their just powers from the consent of the governed, --That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it, and to institute new Government, laying its foundation on such principles and organizing its powers in such form, as to them shall seem most likely to effect their Safety and Happiness. Prudence, indeed, will dictate that Governments long established should not be changed for light and transient causes; and accordingly all experience hath shewn, that mankind are more disposed to suffer, while evils are sufferable, than to right themselves by abolishing the forms to which they are accustomed. But when a long train of abuses and usurpations, pursuing invariably the same Object evinces a design to reduce them under absolute Despotism, it is their right, it is their duty, to throw off such Government, and to provide new Guards for their future security.--Such has been the patient sufferance of these Colonies; and such is now the necessity which constrains them to alter their former Systems of Government. The history of the present King of Great Britain is a history of repeated injuries and usurpations, all having in direct object the establishment of an absolute Tyranny over these States. To prove this, let Facts be submitted to a candid world.

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The characteristics of an air mass depend mainly upon the
expeople1 [14]

Surface over which the air mass was formed.

3 0
3 years ago
The Michaelis constant, Km, refers to the __________ at which a reaction proceeds at __________ of the maximum velocity. This co
pochemuha

Answer:

substrate concentration; one-half; the affinity of the substrate-enzyme interaction

Explanation:

The Michaelis constant, Km, refers to the substrate concentration at which a reaction proceeds at one-half of the maximum velocity. This constant most accurately reflects the affinity of the substrate-enzyme interaction.

7 0
3 years ago
Considering that both sodium (Na) and cesium (Cs) are both alkali metals, which of the following is a correct description of the
IceJOKER [234]

Answer:- C) sodium has a higher ionization energy because it is smaller.

Explanations:- Ionization energy is the energy required to remove electron from valence shell of an atom in it's gaseous form.

More energy is required to remove the electron if the size of the atom is smaller as it's electrons are more strongly attracted by it's nucleus.

In periodic table, atomic size decreases on moving left to right in a period and increases on going top to bottom in a group.

Na and Cs are the elements of same group(first group) and also Cs is below Na. So, as Na is placed above Cs, the size of Na is smaller than Cs and so more energy is required to remove the electron from this smaller atom.

Hence, the right choice is C) sodium has a higher ionization energy because it is smaller.



5 0
4 years ago
The ammonia solution that is purchased for a stockroom has a molarity of 15 M. Determine the volume of 15 M NH3(aq) that must be
lys-0071 [83]

<u>Answer:</u> The volume of stock solution of ammonia that is needed is 48.67 mL

<u>Explanation:</u>

To calculate the volume of stock solution, we use the equation:

M_1V_1=M_2V_2

where,

M_1\text{ and }V_1 are the molarity and volume of the stock ammonia solution

M_2\text{ and }V_2 are the molarity and volume of diluted ammonia solution

We are given:

M_1=15M\\V_1=?mL\\M_2=1.46M\\V_2=500mL

Putting values in above equation, we get:

15\times V_1=1.46\times 500\\\\V_1=\frac{1.46\times 500}{15}=48.67mL

Hence, the volume of stock solution of ammonia that is needed is 48.67 mL

4 0
3 years ago
What forces act between molecules in a molecular compound and formula units in an ionic compound?
Andrews [41]
The answer is going to be Chemical bonding
3 0
3 years ago
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