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o-na [289]
3 years ago
9

Billy is trying to figure out what type of wood to use for building a model boat. He has a block of wood with a volume of 8.0 cu

bic centimeters (cm) and a mass of 4.0 grams (g). What is the density of the block of wood in g/cmº to the nearest tenth? 0.5 2.0 4.0 32.0​
Chemistry
1 answer:
geniusboy [140]3 years ago
6 0

Answer:

ρ = 0.5 g/cm³

Explanation:

Step 1: Given data

Volume of the block of wood (V): 8.0 cm³

Mass of the block of wood (m): 4.0 g

Density of the block of wood (ρ): ?

Step 2: Calculate the density of the block of wood

The density of the block of wood is equal to its mass divided by its volume. The mathematical expression is:

ρ = m/V

ρ = 4.0 g/8.0 cm³

ρ = 0.5 g/cm³

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Answer:

I think it's metabolism

Hope this helps

3 0
3 years ago
A certain reaction at equilibrium has more moles of gaseous products than of gaseous reactants.(b) Write a statement about the r
mojhsa [17]

To be equal as K_p , K_c needs to be divided by (RT)^{\Delta n}

<h3>Briefly explained</h3>

When the amount of gaseous reactant is greater than the amount of gaseous product, where n_{products} < n_{reactants},

then = K_p < K_c

It's because \Delta n is negative, which places (RT) in the denominator. This is how the equation will now appear.

K_p = K_c(RT)^{-\Delta n} = \frac{ K_c}{(RT)^{\Delta n}}

Here you can observe the value of K_c  is greater than K_p. To be equal as K_p , K_c needs to be divided by (RT)^{\Delta n}

<h3>What is Δngas?</h3>

The number of moles of gas that move from the reactant side to the product side is denoted by the symbol ∆n or delta n in this equation.

Once more, n represents the growth in the number of gaseous molecules the equilibrium equation can represent. When there are exactly the same number of gaseous molecules in the system, n = 0, Kp = Kc, and both equilibrium constants are dimensionless.

<h3>Definition of equilibrium</h3>

When a chemical reaction does not completely transform all reactants into products, equilibrium occurs. Many chemical processes eventually reach a state of balance or dynamic equilibrium where both reactants and products are present.

Learn more about equilibrium

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6 0
2 years ago
A helium balloon contains 0.40 g of helium. given the molecular weight of helium is 4.0 g/mol, how many moles of helium does it
Rasek [7]

Answer is 0.10 mol.


<em>Explanation;</em>


n = m/M


Where n is number of moles (mol), m is the mass of substance (g) and M is the molar mass of the substance (g/mol).


n = ?

m = 0.40 g

M = 4.0 g/mol


From substitution,

n = 0.40 g /4.0 g/mol

n = 0.10 mol


Hence, the balloon has 0.10 mol of He.

8 0
3 years ago
Which of the following is an example of an abiotic factor? A wind factor B Human C bacterium D duck
solmaris [256]
Abiotic factors, also called abiotic components, are non-living parts of the environment which affects the living organisms and their function in the ecosystem. I think the correct answer is A. Wind factor is the only non-living part from the choices.

7 0
3 years ago
Read 2 more answers
What is the simplest whole-number ratio of atoms in a molecule or formula unit called?
steposvetlana [31]
Hi there! The simplest whole-number ratio of the atoms in a molecule of formula is called the Empirical formula.
4 0
3 years ago
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