All categories

3 years ago

This chart shows characteristics of three different types of atoms.

Chemistry

2 answers:

g100num [7]3 years ago

6 0

Answer:

Atom X will accept electrons from Atom Y.

Explanation:

Rashid [163]3 years ago

5 0

Answer:

B: Atom X will accept electrons from Atom Y.

Explanation:

I am smart...I also took the test.

You might be interested in

A neutral isotope has 49 neutrons and 36 electrons. Identify the element symbol of this isotope and determine the mass number an

Marta_Voda [28]

Explanation:

In an atom , the relation between the subatomic particles of the atom are given as follows -

For a neutral atom ,

Atomic number = number of protons = number of electrons ,

Mass number = number of protons + number of neutrons,

Hence , from the given information of the question,

number of neutrons = 49 ,

number of electrons = 36 ,

Hence , by using the above relation,

Atomic number = 36

number of protons = 36

Since ,

Mass number = number of protons + number of neutrons

Mass number = 36 + 49 = 85 .

By taking the help of periodic table , as atomic number = 36 ,

The elements is Krypton ( Kr )

Kr ⁸⁵₃₆

4 0

4 years ago

Determine the density of nh3 gas at 435k and 1.00atm

goldenfox [79]

We assume that this gas is ideal. Therefore, we can use the ideal gas equation which is expressed as:

PV=nRT

We manipulate this equation to give us an expression which will correspond to density. We do as follows:

PV= nRT
P/RT = n/V where n = m/MM
P(MM) /RT = m/V = density
Density = 1.00 (17.03) / 0.08206 (435)
Density = 0.48 g / L

5 0

4 years ago

Calculate the molar mass of RbOH

Ghella [55]

Hey there!

RbOH

Rb: 1 x 85.468 = 85.468

O: 1 x 16 = 16

H: 1 x 1.008 = 1.008

------------------------------------

102.476

The molar mass of RbOH is 102.476 g/mol.

Hope this helps!

5 0

3 years ago

A reaction between 46 grams of sodium and 71 grams of chlorine formed table salt and heat.

vazorg [7]

Answer:

d. 117 grams

Explanation:

The mass of the table salt produced will be 117 grams.

Chemical reactions obey the law of conservation of mass. In this regard, matter is neither created nor destroyed in the course of a chemical reaction. It is expected that the mass of the reactants and products remain the same.

The reaction expression:

2Na + Cl₂ → 2NaCl

So, mass of sodium = 46g

mass of chlorine formed = 71g

Mass of NaCl = 46 + 71 = 117g

7 0

3 years ago

What mass of K2CO3 is needed to prepare 200. mL of a solution having a potassium ion concentration of 0.150 M

I am Lyosha [343]

<u>Answer:</u>

2.07 grams

<u>Explanation:</u>

We know that the molecular mass of $K_2CO_3$ is 138.205 grams.

In order to find out how many grams we need to make 200 mL having a potassium ion concentration of 0.150, we need to find the number of moles first.

M = moles / liters

0.150 = x / 0.200

x = 0.03 moles

Since there are 2 potassium atoms in each molecule of $K_2CO_3$ so we will divide this number by half and multiply it by the molecular mass.

0.03/2 = 0.015 moles

Mass of $K_2CO_3$ needed = 0.015 × 138.205 = 2.07 grams

4 0

3 years ago