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3 years ago

Use the picture to answer the following questions.

Chemistry

1 answer:

vesna_86 [32]3 years ago

8 0

1. the producer is the wheat/plant (producers create their own energy, example is photosynthesis in plants)
2. the consumer is the bird (hint all consumers have mouths. they have to eat/ drink something to produce energy)

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1. Which of the following is a combination reaction?

DaniilM [7]

Answer:

The answer to your question is: letter A

Explanation:

A combination reaction is when there are two reactants that gives only one product.

a. 2SO2 + O2—> 2SO3 This is a combination reaction,

2 reactants gives one product.

b. Zn + Cu(NO3)2–>Zn(NO3)2 + Cu This is not a combination reaction,

it's a single replacement reaction.

c. 2H2O2–> 2H2O+O2 This is a decomposition reaction

d. AgNO3 + NaCl → AgCl+NaNO3 THis is a double replacement reaction.

8 0

3 years ago

What is the volume of 40.0 grams of argon gas at STP ?

MrRa [10]

Answer:

24.9 L Ar

General Formulas and Concepts:

Atomic Structure

Reading a Periodic Table
Moles
STP (Standard Conditions for Temperature and Pressure) = 22.4 L per mole at 1 atm, 273 K

Aqueous Solutions

States of Matter

Stoichiometry

Using Dimensional Analysis

Explanation:

Step 1: Define

[Given] 40.0 g Ar

[Solve] L Ar

Step 2: Identify Conversions

[PT] Molar Mass of Ar - 39.95 g/mol

[STP] 22.4 L = 1 mol

Step 3: Convert

[DA] Set up: $\displaystyle 40.0 \ g \ Ar(\frac{1 \ mol \ Ar}{39.95 \ g \ Ar})(\frac{22.4 \ L \ Ar}{1 \ mol \ Ar})$
[DA] Divide/Multiply [Cancel out units]: $\displaystyle 24.9235 \ L \ Ar$

Step 4: Check

Follow sig fig rules and round. We are given 3 sig figs.

24.9235 L Ar ≈ 24.9 L Ar

5 0

3 years ago

the radius of a palladium atom is 137 pm. how many palladium atoms would have to be laid side by side to span a distance of 4.25

Rudiy27

4.25mm / 137pm = 31 021 897.8

7 0

3 years ago

Read 2 more answers

Complete and balance the following symbol equation, and add state symbols

erastovalidia [21]

Answer:

2NaOH + H2So4 》Na2So4+ 2H2O

Explanation:

SODIUM HYDROXIDE, 2NaOH IS (aq)

FULFURIC ACID, H2So4 IS (aq)

SODIUM SULFATE, Na2So4 IS (aq)

WATER,2H20 IS (l)

5 0

3 years ago

In a certain grocery store, strawberries cost $5.76 per pound ( 5.76 dollars/lb ). what is the cost per ounce? express your answ

maria [59]

$6.72/lb = $6.72/16 oz = $0.42/oz = 42 cents per ounce

RE: "numerically to the hundredths place." 

Since, in this case, you're dealing with money, "the hundredths place" simply means, "to the nearest cent."

4 0

3 years ago

Read 2 more answers