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
Makovka662 [10]
3 years ago
9

Find the amount of heat (Q) needed to raise the temperature of 5.00 g of a substance from 20.0 C to 30.0C if

Chemistry
1 answer:
zepelin [54]3 years ago
8 0

Answer:

100.5 J

Explanation:

You might be interested in
Aluminum finds application as a foil for wrapping food stuves. Why?
pshichka [43]

Answer:

it keeps the heat in and the bugs and flys out

Explanation:

8 0
1 year ago
What is the molar mass of Na2CO3? 60.0 g/mol 106.0 g/mol 118.0 g/mol 141.0 g/mol
Dmitry [639]

Answer is: the molar mass od sodium carbonate (Na₂CO₃) is 106.0 g/mol.

M(Na₂CO₃) = 2 · Ar(Na) + Ar(C) + 3 · Ar(O).

M(Na₂CO₃) = 2 · 23 + 12 + 3 · 16 · g/mol.

M(Na₂CO₃) = 46 + 12 + 48 · g/mol.

M(Na₂CO₃) = 106 g/mol; molar mass of sodium carbonate.

Ar is relative atomic mass (the ratio of the average mass of atoms of a chemical element to one unified atomic mass unit) of an element.

8 0
3 years ago
Based on the information in the passage, what is true of gases?
luda_lava [24]
1: True
2: True
3: False
4: False

(Question 2 might not be true, not sure)
7 0
2 years ago
What is a magnetic reversal
Brilliant_brown [7]
A change in the Earth's magnetic<span> field resulting in the </span>magnetic<span> north being aligned with the geographic south, and the </span>magnetic<span> south being aligned with the geographic north. Also called </span>geomagnetic reversal<span>.</span>
5 0
3 years ago
The indicator propyl red has a Ka of 3.3 X 10-6 . It is red at low pH and yellow at higher pH. What is the approximate pH range
Alik [6]

Answer:

4.48 - 6.48

Explanation:

A pH indicator works in a better way in a range of pH = pKa ± 1. That means we need to determine the pKa of the indicator propyl red to find the range over which it change its color. That is:

pKa = -log Ka

pKa = -log 3.3x10⁻⁶

pKa = 5.48

That means the range over propyl red will change from yellow to red or vice versa is:

4.48 - 6.48

5 0
2 years ago
Other questions:
  • How many moles of O2 can be produced from 1.7 moles of KClO3?
    12·1 answer
  • What is a chemical change and what is a chemical property? Give Example.
    10·2 answers
  • 8. The oxidation number of magnesium in magnesium chloride is _____.
    10·2 answers
  • Discovery can't live without
    15·1 answer
  • Why are Noble gases inert?
    15·1 answer
  • For the reactionSO2(g) + NO2(g) SO3(g) + NO(g), the equilibrium constant is 18.0 at 1,200ºC. If 2.0 moles of SO2 and 2.0 moles o
    14·1 answer
  • A student is asked to balance an equation by using the half-reaction method. He determines the two half reactions as shown below
    7·1 answer
  • How many moles are in 17.2g k2s
    14·1 answer
  • A 1. 07 g sample of a noble gas occupies a volume of 363 ml at 35°c and 678 mmhg. Identify the noble gas in this sample. (r = 0.
    14·1 answer
  • What is the ph of an aqueous solution with a hydrogen ion concentration of [H+]=1. 2×10^−8 m?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!