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Levart [38]
3 years ago
11

Please help, i need help! it’s for chemistry!

Chemistry
1 answer:
viktelen [127]3 years ago
7 0

Sodium - metallic bonding

Oxygen - covalent bonding

Sodium chloride - ionic bonding

Magnesium oxide - ionic bonding

Nitrogen fluoride - covalent bonding

Aluminium - metallic bonding

Calcium hydroxide - ionic bonding

Silicon fluoride - covalent bonding (not 100% sure on this one)

Chlorine - covalent bonding

Potassium oxide - ionic bonding

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Jen makes a Venn diagram to compare active transport and passive transport.
Oksanka [162]

Answer:

moves molecules

Explanation:

I did this one yesterday! Active transport moves low to high concentration and passive does the opposite so C and D are not an option. Active transport requires energy and Passive Transport does not so it has to be A.!

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3 years ago
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Construct a model to show the movement of matter and energy from plants into other organisms. Show how mass and energy are conse
ad-work [718]

Plants obtain energy from the sun during photosynthesis and pass it along the food chain.

<h3>What is a model?</h3>

A model is a representation of reality. We use models to understand what the real situation of things is like.

Let us recall that plants are the producers in the ecosystem. Energy flow from plants to animals. Plants obtain energy via the reaction 6CO2 + 6H2O --->C6H12O6 + ATP. This energy is passed along the food chain as organisms feed on each other.

Learn more about models: brainly.com/question/14281845

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2 years ago
How do scientists measure the idea of time so long ago?
professor190 [17]

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3 years ago
How many steps to complete mitosis and meiosis??
dangina [55]
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7 0
3 years ago
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Acetylene, C2H2, can be converted to ethane, C2H6, by a process known as hydrogenation. The reaction is C2H2(g) + 2H2(g) ⇌ C2H6(
sukhopar [10]

Answer:

-255.4 kJ

Explanation:

The free energy of a reversible reaction can be calculated by:

ΔG = (ΔG° + RTlnQ)*n

Where R is the gas constant (8.314x10⁻³ kJ/mol.K), T is the temperature in K, n is the number of moles of the products (n =1), and Q is the reaction quotient, which is calculated based on the multiplication of partial pressures by the partial pressure of the products elevated by their coefficient divide by the multiplication of the partial pressure of the reactants elevated by their coefficients.

C₂H₂(g) + 2H₂(g) ⇄ C₂H₆(g)

Q = pC₂H₆/[pC₂H₂ * (pH₂)²]

Q = 0.261/[8.58*(3.06)²]

Q = 3.2487x10⁻³

ΔG = -241.2 + 8.314x10⁻³x298*ln(3.2487x10⁻³)

ΔG = -255.4 kJ

4 0
3 years ago
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