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
NikAS [45]
3 years ago
10

Someone please do a True or false of all of these

Chemistry
1 answer:
GuDViN [60]3 years ago
8 0

Answer:

1. False

2. True

3. False

4. False

5. True

6. False

7. True

8. True

9. True

You might be interested in
Dr. Maxwell performed several experiments which seem to indicate that eating chocolate is always bad for your health. How should
svetoff [14.1K]

D. They should try to reproduce Dr. Maxwell's research to verify his results

3 0
3 years ago
Read 2 more answers
Which of the following increases as you move up a column of the periodic table?
luda_lava [24]

Answer:

electronegativity increases

6 0
3 years ago
A hot lump of 30.5 g of iron at an initial temperature of 52.7 °C is placed in 50.0 mL H2O initially at 25.0 °C and allowed to r
slava [35]

Answer:

26.7°C

Explanation:

Using the formula; Q = m × c × ΔT

Where; Q = amount of heat

m = mass

c = specific heat

ΔT = change in temperature

In this question involving iron placed into water, the Qwater = Qiron

For water; m= 50g, c = 4.18 J/g°C, Initial temp= 25°C, final temp=?

For iron; m = 30.5g, c = 0.449J/g°C, Initial temp= 52.7°C, final temp=?

Qwater = -(Qiron)

m × c × ΔT (water) =- {m × c × ΔT (iron)}

50 × 4.18 × (T - 25) = - {30.5 × 0.449 × (T - 52.7)}

209 (T - 25) = - {13.6945 (T - 52.7)}

209T - 5225 = -13.6945T + 721.7

209T + 13.6945T = 5225 + 721.7

222.6945T = 5946.7

T = 5946.7/222.6945

T = 26.7

Hence, the final temperature of water and iron is 26.7°C

8 0
3 years ago
1. How many protons does 14/6 C contain? What element is this?
Harman [31]

Answer:

It has 6 protons and its Carbon 14

Explanation:

3 0
3 years ago
0.0136 g + 2.70 × 10-4 g - 4.21 × 10-3 g = ?
melisa1 [442]

Answer choice is , 2

3 0
3 years ago
Other questions:
  • How many atoms of a chlorine element would be needed to react with one atomic of helium
    13·1 answer
  • How many moles of carbon are in 3.5 moles of calcium carbonate? ______?
    6·2 answers
  • What should we do to increase energy efficiency ?
    11·1 answer
  • Which statement describes the reactions in an electrochemical cell
    13·1 answer
  • The cell cycle can be divided into two phases interphase and mitosis (cell division), Mitosis is further subdivided into prophas
    6·2 answers
  • PLZ HELP I NEED THIS TO GET DONE!​
    8·1 answer
  • Why is there need to standardize a solution​
    15·1 answer
  • To make 4.25 L of 3.0 M NaOH solution how much of a 9.0 M NaOH solution would be needed?
    11·1 answer
  • Which of Earth's five spheres is involved when a volcano erupts?
    10·1 answer
  • for an oxygen gas as 3000kelvin, calculate the characteristics vibrational temperature and the vibrational partition function gi
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!