Please check my answers? (image attached)

Answers

Answer 1

Answer: the first two answers are correct, but the last one is supposed to be 'molecule' not covalent bond

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The unstable nucleus that breaks apart is called ____A) Daughter NucleusB) Parent NucleusC) Beta ParticleD) Alpha Particle

Write the pressure equilibrium constant expression for this reaction. 2CO2 (g) + 4H2O (g) → 2CH3OH (l) + 3O2 (g)

Answers

Answer:

The pressure equilibrium constant (Kp) = (P O₂)³/(P CO₂)²(P H₂O)⁴.

Explanation:

For the reaction:

2CO₂ (g) + 4H₂O (g) → 2CH₃OH (l) + 3O₂ (g).

The pressure equilibrium constant (Kp) = the product of the pressure of the products side components / the product of the pressure of the reactantss side components.

each one is raised to a power equal to its coefficient.

∴ The pressure equilibrium constant (Kp) = (P O₂)³/(P CO₂)²(P H₂O)⁴.

Which of the following is not a savanna?a. Cerrado
b. Pampas
C. Llanos
d. Serengeti

Answers

The answer is option B: Pampas

Answer:

Answer is B Pampas

Explanation:

Edge2020

The heat of vaporization for ethanol is 0.826 kJ/j. Calculate the heat energy in joules required to boil 45.65g of ethanol

Answers

Answer:

ethanol is already at the ethanol's boiling point: (0.826 kJ/g) x (70.05 g) = 57.8613 kJ = 5.79 x 10^4 J.

Missing: 45.65 ‎| ‎Must include: ‎45.65

Explanation:

Answer:

Explanation:

Supposing the temperature of the ethanol is already at the ethanol's boiling point:

(0.826 kJ/g) x (70.05 g) = 57.8613 kJ = 5.79 x 10^4 J

The number of valence electrons in each atom of an element affects the elements

Answers

Explanation:

The number of valence electrons or outermost electrons present in an atom determines the chemical properties of an atom.

Therefore, atoms belonging to same group have same number of valence electrons. Thus, atoms of a group have similar chemical properties.

Hence, we can conclude that the number of valence electrons in each atom of an element affects the elements chemical properties.

The number of electrons in an atom's outermost valence shell governs its chemical properties. Elements react to form a closed shell, corresponding to the electron configuration s2p6 . This tendency is called the octet rule, because the atoms have eight valence electrons.

Metalloids are border of metals and non metals why

Answers

Answer:

Metalloids are called the border of metals and non metals.

Explanation:

They show some properties of metals and some properties of non metals.

Answer:

Metalloids exhibit metal and non-metal properties.

Explanation:

Some metals such as Boron and silicons and not necessarily a metal, nor are they a gas.

What is being done to reduce the levels of acid rain?

Answers

EPA’s Acid Rain Program