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3 years ago

Use this reaction: 3NaOH + H3PO4--> Na3PO4 + 3H20

1 answer:

8 0

The balanced reaction would be as follows:

3NaOH + H3PO4 --> Na3PO4 + 3H20

We are given the concentration and the amount of the reactants to be used. We use these values for the calculations as follows:

How many mL of .225 M NaOH will react with 4.568g H3PO4?

4.568 g (1 mol / 98 g) ( 3 mol NaOH / 1 mol H3PO4 ) ( 1 L / .225 mol NaOH ) = 0.621 L or 621 mL of .225 NaOH

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Select all true statements about hybridization, of a second-row element, changing from sp2 to sp3. (max of 3 choices) a. The ato

Neko [114]

Answer:

a. The atom will go from a two-dimensional configuration to a three dimensional configuration.

d. The bond angle will increase.

f. The number of unhybridized p orbitals will decrease.

Explanation:

Sp2 is the atomic bond in which orbitals mixes with only two orbitals. These orbitals form three sp2. When two carbon atoms are overlapped they form sigma bond by overlapping of sp2 bonds. Sp3 bond is created when there is one lone molecule available for combination. When the bonding is updated from sp2 to sp3 then unhybridized orbitals will decrease causing the bond angle to increase.

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3 years ago

A solution is prepared by dissolving sugar in water. The solution is 25.0%, by mass, sugar. How many grams of WATER are in 472 g

const2013 [10]

If the sugar makes up 25% of the solution, that means the water makes up 75%, or 3/4, of the solution.

Set up a proportion to solve:
$\frac{3}{4} = \frac{x}{472}$

Cross multiply:
$4x = 1416$
$x = 354$

Therefore, there are 354 grams of water in the solution.

3 0

3 years ago

What do you know about Relative Dating

gizmo_the_mogwai [7]

it tells you the sequence in which events occurred, not how long ago they occurred.

8 0

4 years ago

If a gas is compressed from 4 L to 1 L and the temperature remains constant, what happens to the pressure?

Luba_88 [7]

If T=const
P1V1=P2V2
P1*4L=P2*1L
P2=4P1
pressure increases by factor of 4

4 0

3 years ago

Read 2 more answers

A student who is studying atomic reactions creates the following Venn diagram.

Lady bird [3.3K]

A. reaction A: chemical; reaction B: nuclear

Answer:

Solution given:

Circle 2: Reaction B

-Involves neutrons

-Happens inside atomic nucleus

-Releases relatively large amounts of energy

It happens on normal chemical reaction.

Circle 2: Reaction B

-Involves neutrons

-Happens inside atomic nucleus

-Releases relatively large amounts of energy

It happens on nuclear reaction.

5 0

3 years ago

Read 2 more answers