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
Ymorist [56]
3 years ago
14

What is the amount of heat, in joules, required to increase the temperature of a 49.5-gram sample of water from 22°C to 66°C?

Chemistry
1 answer:
charle [14.2K]3 years ago
7 0

Answer:

3) 9.1 x 10^3 J

Explanation:

You might be interested in
In this task, you’ll observe a chemical reaction between baking soda and vinegar in water. write a hypothesis to predict the rel
Archy [21]

Answer:

Increase in the concentration of the reactants (vinegar and baking soda) leads to an increase in the rate of reaction (more volume of CO2 is evolved within a shorter time)

Explanation:

The chemical reaction between baking soda and vinegar in water is shown in the chemical reaction equation below;

NaHCO3(aq) + CH3COOH(aq) ----->CO2(g) + H2O(l) + CH3COONa(aq)

The chemical name of baking soda is sodium bicarbonate (NaHCO3) while vineager is a dilute acetic acid (CH3COOH) solution. This reaction provides a very easy set up in which we can study the effect of concentration on the rate of chemical reaction.

We must have it behind our minds that increase in the concentration of reactant species increases the rate of chemical reaction. Secondly, the rate of the reaction between baking soda and vinegar can be monitored by observing the volume of CO2 evolved and how quickly it evolves from the reaction mixture.

We can now postulate a hypothesis which states that; 'increase in the concentration of the reactants (vinegar and baking soda) leads to an increase in the rate of reaction (more volume of CO2 is evolved within a shorter time).'

If we go ahead to subject this hypothesis to experimental test, it will be confirmed to be true because a greater volume of CO2 will be evolved within a shorter time as the concentration of the reactants increases.

3 0
3 years ago
A dry cell produces_______ electricity.<br><br>A) static <br><br>B) current ​
ivolga24 [154]

Answer:

dude! it's static!

Explanation:

a dry cell can't function and is therefore static!

4 0
3 years ago
If the two atoms participating in a bond have an electron negativity difference of 1.9 , what type of of bond would they be part
brilliants [131]

Answer:

Polar covalent bond.

Explanation:

When the bond is formed between the atoms by sharing the electrons the bond thus have covalent character.   The atom with larger electronegativity attract the electron pair more towards it self and becomes partial negative while the other atom becomes partial positive.  When the electronegativity difference is less than 0.4 the bond is non polar covalent.

When bonded atoms have greater electronegativity difference i.e 2 or greater than two the bond is ionic because electron is transfer from low electronegative atom to highest electronegative atom.

For example:

In water the electronegativity of oxygen is 3.44 and hydrogen is 2.2. That's why electron pair attracted more towards oxygen, thus oxygen becomes partial negative and hydrogen becomes partial positive.

In case of H₂, Cl₂, Br₂ the bond has very high covalent character because of zero electronegativity difference.

7 0
3 years ago
Hi, im 15 i live in indiana and i need friends please i love tacos and im an all around fun person but very emotionally drained.
Andrei [34K]

Answer:

you sound like a cool guy, ill email ya one of these days

Explanation:

4 0
3 years ago
Read 2 more answers
A student makes the following hypothesis: If the amount of chocolate increases then the cake will taste sweeter. What is the ind
Talja [164]

Answer:

the chocolate

Explanation:

You are changing the amount of chocolate

8 0
3 years ago
Other questions:
  • The reducing agent in this catalytic hydrogenation reaction was molecular hydrogen (H2), which was produced in situ (in the reac
    13·1 answer
  • Which one of the following statements about Reaction #1 is correct?
    13·1 answer
  • What is the pH of a solution in which 222 mL of HCl(g), measured at 26.0 ∘C and 1.06 atm, is dissolved in water to give 1.5 L of
    8·1 answer
  • What may be expected when K &lt; 1.0? Choose the THREE correct statements. The concentration of one or more of the reactants is
    14·1 answer
  • A 7.11g sample of potassium chlorate was decomposed according to the following equation: 2KCLO3 --&gt;2KCL + 3O2 How many moles
    9·1 answer
  • How many moles of a gas are present in a volume of 5.00l at 1.00atm and 298.15k?
    9·1 answer
  • The structural level of a protein least affected by a disruption in hydrogen bonding is the
    11·2 answers
  • 2 C2H6 + 7 026 H2O + 4 CO2
    5·1 answer
  • NEED HELP ASPA WILL MAKE THE BRAINIEST ANSWER
    14·1 answer
  • Which of the following types of bonds will have the highest electrical conductivity?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!