1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
DedPeter [7]
3 years ago
8

Please somebody help I have no idea what the correct answer is! (iii) and (iv)

Chemistry
1 answer:
brilliants [131]3 years ago
3 0
Since phosphoric acid is H3PO4, which is known from PO4, with a charge of 3- so 3 hydrogen would balance it out, and sodium hydroxide is NaOH, it can be assumed that it results in H3(OH)3 + Na3PO4.
You might be interested in
A 5.00-cm cube of magnesium has a mass of 217.501 g. What is the density of magnesiummetal?
Doss [256]

Answer:

d = 43.5 g/cm³

Explanation:

Given data:

Mass of magnesium cube = 217.501 g

Volume of magnesium cube = 5.00 cm³

Density of magnesium cube = ?

Solution:

Formula:

d = m/v

d = density

m = mass

v = volume

by putting values,

d = 217.501 g/ 5.00 cm³

d = 43.5 g/cm³

8 0
3 years ago
which one of these is caused by gravity? A. frost wedging. B. mass wasting. C. Aeolian bands. D. Glaciation
AlladinOne [14]
If I remember correctly, the answer is A
7 0
3 years ago
Read 2 more answers
Which of the following molecules has a bent shape?
poizon [28]

A, because the shape of it forms and arc much like a H2O molecule.

4 0
3 years ago
How many atoms of oxygen are contained in 160 grams if N2O3?​
Juli2301 [7.4K]

Answer:

3.80x1024 grams containing if not that then above 80 grams 6 grams

Explanation:

3 0
2 years ago
Read 2 more answers
15.3 g of nano3 were dissolved in 100g of water in a calorimeter. The temperature of the water drops from 25.00°c to 21.56°c. Ca
Arturiano [62]

Answer:

0.259 kJ/mol ≅ 0.26 kJ/mol.

Explanation:

  • To solve this problem, we can use the relation:

<em>Q = m.c.ΔT,</em>

where, Q is the amount of heat absorbed by ice (Q = ??? J).

m is the mass of the ice (m = 100.0 g).

c is the specific heat of water (c of ice = 4.186 J/g.°C).

ΔT is the difference between the initial and final temperature (ΔT = final T - initial T = 21.56°C - 25.0°C = -3.44°C).

<em>∵ Q = m.c.ΔT</em>

∴ Q = (100.0 g)(4.186 J/g.°C)(-3.44°C) = -1440 J = -1.44 kJ.

<em>∵ ΔH = Q/n</em>

n = mass/molar mass = (100.0 g)/(18.0 g/mol) = 5.556 mol.

∴ ΔH = (-1.44 kJ)/(5.556 mol) = 0.259 kJ/mol ≅ 0.26 kJ/mol.

3 0
3 years ago
Other questions:
  • 1. which is not a component of biodiversity
    11·1 answer
  • Where does radioactivity come from?
    5·2 answers
  • How many protons are found in element 14?<br><br>14<br><br>12<br><br>11<br><br>10​
    12·2 answers
  • A blank observation is when you describe something
    7·1 answer
  • The equation below shows the products formed when a solution of silver nitrate (AgNO3) reacts with a solution of sodium chloride
    5·2 answers
  • Water’s boiling point would be close to
    5·1 answer
  • Physical and chemical means cannot separate which into smaller parts?
    12·2 answers
  • Which of the following is the best description of the results of a chemical reaction?
    7·1 answer
  • How one atom undergoing fission can cause up to three other atoms to undergo fission.
    14·1 answer
  • What is the molarity of 0.25 moles of KBr dissolved into 250 ml of solution?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!