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3 years ago

5

Draw or sketch something that you might see move. Write a caption that answers the following questions: How would you describe i

ts motion? Is it moving at a constant speed, or does it speed up and slow down?

1 answer:

olasank [31]3 years ago

4 0

Answer:

lets say your doing a frog

it jumps it speeds up and then slows down

Explanation:

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A compound analyzed as 18.0% carbon, 2.26% hydrogen, and 79.7% chlorine. calculate the empirical formula of the compound.

Juli2301 [7.4K]

To answer this item, our basis is 100g. We solve for the masses of the given elements in this item,

carbon: (0.18)(100 g) = 18 g
hydrogen: (0.0226)(100 g) = 2.26 g
chlorine: (0.797)(100 g) = 17.7 g

Then, we calculate for the number of moles by dividing the masses by the molar masses of the given elements.

Number of moles:

carbon = (18 g) x (1 mol / 12 g) = 1.5 moles
hydrogen = (2.26 g) x (1 mol/ 1.01 g) = 2.23 moles
chlorine = (79.7 g) x (1 mol / 35.45 g) = 2.25 moles

We get the ratio of the number of moles by dividing them with the lowest value, 1.5.
Carbon = 1.5 moles / 1.5 = 1
Hydrogen = 2.23 moles / 1.5 = 1.48
Chlorine = 2.25 / 1.5 = 1.5

The empirical formula is,
C1H1.5CL1.5
Simplifying,
<em> C2H3Cl3</em>

5 0

3 years ago

Enter the chemical formula for water. formula:

Gennadij [26K]

H2O ....................

8 0

4 years ago

Read 2 more answers

Where do producers get their energy?

Ahat [919]

The answer is letter b. from the sunlight. Plants are also referred as producers. Typically, plants gets their energy from the sun, wherein it helps them produce their own food, through the sunlight, the carbon dioxide present, the process wherein the producers undergo is known as photosynthesis.

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4 years ago

The concentration of H30 in your swimming pool is 4 x 10^-5 M. What is the pH of your pool? O a.-4.4 Ob.4.4 Oc. 0.00004 O d.-0.6

mariarad [96]

Answer:

b. 4.4

Explanation:

pH is related to the concentration of H₃O⁺ through the following equation:

pH = -log([H₃O⁺]) = -log(4 x 10⁻⁵)

pH = 4.4

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4 years ago

Determine the oxidation state of nitrogen in lino3.

Andre45 [30]

Answer : The oxidation state of nitrogen in $LiNO_3$ is, (+5)

Explanation :

Rules for the oxidation numbers :

The oxidation number of a free element is always be zero.
The oxidation number of a monatomic ion equal to the charge of the ion.
The oxidation number of Hydrogen (H) is +1.
The oxidation number of oxygen (O) in compounds is usually -2, but it is -1 in the peroxides.
The oxidation number of a Group 1 element in a compound is +1.
The oxidation number of a Group 2 element in a compound is +2.
The oxidation number of a Group 17 element in a binary compound is -1.
The sum of the oxidation numbers of all of the atoms in a neutral compound is zero.
The sum of the oxidation numbers in a polyatomic ion is equal to the charge of the ion.

The given compound is, $LiNO_3$

Let the oxidation state of 'N' be, 'x'

$(+1)+x+3(-2)=0\\\\x=+5$

Hence, the oxidation state of N is, (+5)

3 0

4 years ago

Read 2 more answers