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suter [353]
3 years ago
7

Jeepers! You scared the life out of me! change into declarative sentence​

Chemistry
1 answer:
Sedbober [7]3 years ago
7 0

You scared the life out of me!

You is the subject,

Scared is the predicate,

<u>!</u> this sign is the punctuation mark.

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If the half-life of an element is 150 years, how much of a 400 gram sample would remain in 750 years?
photoshop1234 [79]

Answer:

y

Explanation:

5 0
3 years ago
11.0 L of hydrogen and 5.52 L of oxygen are exploded together in a reaction tube. What volume of water vapor was formed, at STP?
Marysya12 [62]

Answer:

11.0 L

Explanation:

The equation for this reaction is given as;

2H2  +  O2  -->  2H2O

2 mol of H2 reacts with 1 mol of O2 to form 2 mol of H2O

At STP;

1 mol = 22.4 L

This means;

44.8 L of H2 reacts with 22.4 L of O2 to form 44.8 L of H2O

In this reaction, the limiting reactant is H2 as O2 is in excess.

The relationship between H2 and H2O;

44.8 L = 44.8 L

11.0 L would produce x

Solving for x;

x = 11 * 44.8 / 44.8

x = 11.0 L

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3 years ago
Where do producers belong on the food chain?
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4 0
3 years ago
Enter the Ksp expression for the solid AB2 in terms of the molar solubility x. AB2 has a molar solubility of 3.72×10−4 M. What i
AlekseyPX

Answer:

2.06 × 10⁻¹⁰

Explanation:

Let's consider the solution of a generic compound AB₂.

AB₂(s) ⇄ A²⁺(aq) + 2B⁻(aq)

We can relate the molar solubility (S) with the solubility product constant (Kps) using an ICE chart.

      AB₂(s) ⇄ A²⁺(aq) + 2B⁻(aq)

I                      0              0

C                    +S            +2S

E                      S              2S

The solubility product constant is:

Kps = [A²⁺] × [B⁻]² = S × (2S)² = 4 × S³ = 4 × (3.72 × 10⁻⁴)³ = 2.06 × 10⁻¹⁰

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3 years ago
Which toe of energy change takes place as a car burns fuel to race down a track
Cerrena [4.2K]
Toe? Do you mean which toe like feet or a different toe



Explanation:
7 0
3 years ago
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