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
beks73 [17]
4 years ago
14

True or false: scientists make observations very carefully science

Chemistry
2 answers:
posledela4 years ago
8 0
True hope this helped u
Olenka [21]4 years ago
3 0
True, scientists do make observations very carefully.
You might be interested in
How are nymphs different from adult insects?
umka2103 [35]

Answer:

Explanation:

the nymph looks like a smaller version of the adult insect, & it also has no wings & molts.

4 0
4 years ago
Read 2 more answers
1. How many moles of oxygen gas are needed to form 21.8 liters of water vapor?
BaLLatris [955]

0.781 moles

Explanation:

We begin by balancing the chemical equation;

O₂ (g) + 2H₂ (g) → 2H₂O (g)

21.8 Liters = 21.8 Kgs

To find how many moles are in 28.1 Kg H₂O;

Molar mass of H₂O = 18 g/mol

28.1/18

= 1.56 moles

The mole ratio between water vapor and oxygen is;

1 : 2

x : 1.56

2x = 1.56

x = 1.56 / 2

x =  0.781

0.781 moles

7 0
3 years ago
Which Chemical Reaction is balanced?
cupoosta [38]

Answer:

A

Explanation:

The letter A is the correct answer

7 0
3 years ago
A change in color indicates that what has occurred?
Alex

Answer:

it's an indicator that a chemical reaction occurred.

6 0
3 years ago
Which is a sign of a chemical change?
Igoryamba
The correct answer for the question it is option  

>>>>D<<<<

%100 sure 

if you need another answer welcome to come

7 0
3 years ago
Other questions:
  • Suppose a student completes an experiment with an average value of 2.6 mL and a calculated standard deviation of 0.80 mL. What i
    7·1 answer
  • Solid barium sulfate dissolves into its respective ions at 25°C. Suppose that in a particular solution, [Ba2+ ] = 1.76 x 10-3 M.
    6·2 answers
  • How much heat is required to decompose 25.5 grams of NaHCO3? 2NaHCO3(s) + 129 kJ 2Na2CO3(s) + H2O(
    9·1 answer
  • The greater the molality of solute, the less (easily) a solution evaporates.
    15·1 answer
  • For which compound does 0.26 mole weigh 13g
    11·1 answer
  • Question 1 of 10
    15·1 answer
  • 3. If an item of trash is described as highly biodegradable, is that a physical property or
    10·1 answer
  • Terry usually rides his bike at 15 mph. If his riding speed is reduced by 3 mph, how far can he ride in 1.7 hours? ___miles​
    13·2 answers
  • What is the volume of a gas if 0.182 moles of the gas is at 1.99 atm and 83.4oC?
    11·1 answer
  • What mass of ag2co3 could you produce from 12.7 g agno3 assuming that it is the limiting reagent?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!