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
Stels [109]
3 years ago
10

1. Express in conventional notation (no exponents) in the space provided within the

Chemistry
1 answer:
mina [271]3 years ago
7 0

Answer:

a) 320: two significant figures.

b) 2,366: four significant figures.

c) 73.0: three significant figures.

d. 532.5: four significant figures.

Explanation:

Hello there!

In this case, according to the given information, it turns out possible for us to write each number by knowing we move the decimal places to the right as much as the exponent is, and also, we count every figure, even zeros, because they are to the right of the first nonzero digit:

a) 320: two significant figures because the rightmost zero is not preceded o followed by a decimal place.

b) 2,366: four significant figures.

c) 73.0: three significant figures, because the zero is followed by the decimal place.

d. 532.5: four significant figures.

Regards!

You might be interested in
Whats the effect?
scZoUnD [109]

Answer: A wave

Explanation:

Because it’s the one that’s cause the new medium to go between the two media.

6 0
2 years ago
Read 2 more answers
Question 1<br>Which of the following is a false​
Bogdan [553]

Answer:

1.A 2.C 3.B

4. d

Explanation:

6 0
2 years ago
Organic protein catalysts are called:<br> carbohydrates<br> amino acids<br> enzymes<br> lipids
Fittoniya [83]

Answer:

Enzymes.

Explanation:

That would be enzymes.  They increase the rate of chemical reactions in cells.

7 0
3 years ago
Read 2 more answers
PLEASE HELPPPP???!!!!!!
sertanlavr [38]
Mass of molecule (g) = Mr of substance over avarogado constant
5 0
3 years ago
Using the reaction below: 2 CO2(g) + 2 H2O(l) → C2H4(g) + 3 O2(g) ΔHrxn= +1411.1 kJ What would be the heat of reaction for this
maw [93]

Answer:  d) -705.55 kJ

Explanation:

Heat of reaction is the change of enthalpy during a chemical reaction with all substances in their standard states.

2CO_2(g)+2H_2O(l)\rightarrow C_2H_4(g)+3O_2(g) \Delta H=+1411.1kJ

Reversing the reaction, changes the sign of \Delta H

C_2H_4(g)+3O_2(g)\rightarrow 2CO_2(g)+2H_2O(l)

\Delta H=-1411.1kJ

On multiplying the reaction by \frac{1}{2} , enthalpy gets half:

0.5C_2H_4(g)+1.5O_2(g)\rightarrow CO_2(g)+H_2O(l)\Delta H=\frac{1}{2}\times -1411.1kJ=-705.55kJ/mol

Thus the enthalpy change for the given reaction is -705.55kJ

7 0
3 years ago
Other questions:
  • Which of the subatomic particles is responsible for the chemical behavior of a given atom?
    6·1 answer
  • Addition of dns at the end of the incubation period stopped the reaction by denaturing sucrase. explain why it is important to d
    15·2 answers
  • What are the two main ways that minerals are classified
    13·1 answer
  • Calculate the enthalpy change when 4.00 mol Cl2O7 is produced according to the following balanced equation:
    7·1 answer
  • Cómo puedes medir un gas?
    6·1 answer
  • 2 human activities that contribute to runoff into water systems
    8·1 answer
  • HELPP!!
    9·1 answer
  • The weak interactions between atoms that keep atoms near each other but don't tightly bind them together are called
    13·1 answer
  • Mike and Mariah are in the same science class. Mike wants to know how the water cycle transports energy and matter. Which of the
    13·2 answers
  • What is the mass of 4.5 moles of Cu(NO3)2?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!