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4 years ago

Please answer fast!

Chemistry

1 answer:

Over [174]4 years ago

4 0

Explanation:

they are located in the neucleus

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The hydronium ion concentration in a solution at ph 10 has what relationship to the hydronium ion concentration in a solution at

fgiga [73]

Based on your information 1000 times greater than pH 13 is the best I can come up with.

8 0

3 years ago

How many ml of water will it take to fill 2.0 l bottle that already contains 1.25 l of

zalisa [80]

First off, we can find the volume that need to be filled:

2-1.25

=0.75L

Asbthe unit is still in Litres,we need to converge it to mL.

1L = 1000mL

mL needed:

=0.75×1000

=750mL

Therefore the answer is 750mL.

Hope it helps!

3 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

Great white sharks live in the waters around California and feed on seals. Changes in his ecosystem have caused the seal populat

VashaNatasha [74]

C. The shark population decreases. Because the sharks will soon run out of food and dolphins are not the easiest to eat because they can fight back with their sharp teeth. And the sharks can't just stop eating. So the realty is the sharks population will most likely decrease. But the great white sharks are very big and powerful sharks so if they do move waters them most likely will be attacked by other sharks but will survive. So the other possible answer could be B

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3 years ago

Complete and balance the following reactions ca+H

ipn [44]

Ca + H = CaH2

Calcium + Hydrogen = Calcium hydride

Balanced equation :-

Ca + 2H = CaH2

7 0

3 years ago