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
postnew [5]
2 years ago
12

Complete the following math problem and round your answer to the correct number of significant figures. Explain why your answer

has that number of decimal places or significant figures.
12.65 + 11.2
Chemistry
1 answer:
BigorU [14]2 years ago
7 0

Answer:

file link http/www.openfree

You might be interested in
A 50.0 g gold spoon at 10.0 °c is placed in a cup of how water 95.0 °c. how much heat does the water lose to the spoon if the sp
Flauer [41]
Heat energy is calculated by multiplying the  mass, specific heat capacity of a substance by the change in temperatures. Therefore,the heat lost by water will be given by mass of water (in kg) × specific heat capacity of water × change in temperature. This heat will be equivalent to the heat gained by the spoon calculated by mass of the spoon by specific heat capacity by change in temperature. (considering that the specific heat capacity of gold is 125.6 J/kg/k)
hence, 0.05 kg × 49 × 125.6 J/kg/k = 307.72 Joules
therefore, heat lost by water is equivalent to 307.72 Joules

5 0
3 years ago
Read 2 more answers
The change in entropy, Δ S ∘ rxn , is related to the the change in the number of moles of gas molecules, Δ n gas . Determine the
rewona [7]

Answer:

The entropy decreases.

Explanation:

The change in the standard entropy of a reaction (ΔS°rxn) is related to the change in the number of gaseous moles (Δngas), where

Δngas = n(gaseous products) - n(gaseous reactants)

  • If Δngas > 0, the entropy increases
  • If Δngas < 0, the entropy decreases.
  • If Δngas = 0, there is little or no change in the entropy.

Let's consider the following reaction.

2 H₂(g) + O₂(g) ⟶ 2 H₂O(l)

Δngas = 0 - 3 = -3, so the entropy decreases.

8 0
3 years ago
Products or solutions found at home or in store and their characteristics
AleksAgata [21]

Answer:

bruh, just go in your bathroom and look for cleaning products

Explanation:

4 0
3 years ago
List some of applications with chemistry in daily life​
Nuetrik [128]

Answer:

while cooking or washing something lol

6 0
3 years ago
Help Pls..
defon
The correct answer is <span>Glucose and oxygen.</span>
8 0
3 years ago
Other questions:
  • On a graph, which type of line shows a direct proportion?
    11·1 answer
  • How do sulfur and phosphorus move from the biotic to the abiotic pools during their cycle?
    15·1 answer
  • According to the american academy of pediatric dentistry, you should make sure your toothpaste has
    5·2 answers
  • What is the ph of a 0.15 m solution of ammonium chloride?
    14·1 answer
  • Ocean basins will expand as new oceanic crust forms and moves away from a mid-oceanic ridge during
    7·2 answers
  • A boat Pulls a 60Kg water-skier with a force of 105 N, What is the skier’s acceleration?
    9·1 answer
  • Number 2 &amp; 3 please !!&lt;3
    5·1 answer
  • How do high - energy electrons form glycolysis and the Krebs cycle contribute to the formation of ATP from ADP in the electron t
    8·1 answer
  • How many molecules are in 3.8 grams of c6h6
    14·2 answers
  • Two groups were tasked to measure the mass of the metal objects given by their teacher. Rachel’s group has the following data fo
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!