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
Yanka [14]
3 years ago
10

How many J of energy would you need in order to heat 252 grams of

Chemistry
1 answer:
Helen [10]3 years ago
8 0

Answer:

16128 J

Explanation:

Data:

  • m (mass) = 252 g
  • T<em>i</em> (Temperature initial) = 305 K
  • T<em>f</em> (Temperature final) = 445 K
  • c (specific heat) 0.450 J/g*K

Wanted:

  • q (heat) = ? J

Solution:

  • q = mCΔT
  • q = (256 g)(0.450 J/g*K) (445 K - 305 K)
  • q = (256 g)(0.450 J/g*K) (140 K)
  • q = 16128 J

<u>Note:</u>

The <em>answer</em> is not in a correct significant figure. So, make sure you have a correct significant figure.

You might be interested in
What type of a chemical reaction generates the electrical energy produced by a battery
AnnyKZ [126]
The type of chemical reaction is an oxidation-reduction reaction, also known as redox reaction. Batteries use this chemical reaction to do work on charge and produce voltage. The important part is called an electrochemical cell where the reaction occurs.
7 0
3 years ago
Which unit can be used to express the concentration of a solution?
exis [7]

Answer: (3) ppm

Explanation: Concentration is defined as the amount of solute dissolved in a known amount of the solvent or  a solution.

Parts per million (ppm) is used to express the concentration when a very small quantity of solute is present in a large quantity of the solution. It is defined as the mass of solute present in one milion (10^6) parts by mass of the solution.

ppm=\frac{\text {mass of Solute}}{\text {Mass of solution}}\times 10^6

L/s is used to express flow rate.

J/g is used to express energy per unit mass.

kPa is used to express pressure.

6 0
4 years ago
Read 2 more answers
If you start with 6 moles of N2 and 6 moles of H2 (meaning you won't have enough of 1 of the ingredients), how many moles of NH3
Ivahew [28]

Answer:

4molNH_3

Explanation:

Hello there!

In this case, according to the given information it will be firstly necessary to set up the chemical equation taking place:

N_2+3H_3\rightarrow 2NH_3

We infer we need to calculate the moles of NH3 by using both of the moles of N2 and H2 at the beginning, in order to identify the limiting reactant:

n_{NH_3}=6molN_2*\frac{2molNH_3}{1molN_2}=12molNH_3\\\\ n_{NH_3}=6molH_2*\frac{2molNH_3}{3molH_2}=4molNH_3\\

Thus, since hydrogen yields the fewest moles of ammonia, we conclude that we are just able to yield 4 moles of NH3.

Regards!

8 0
3 years ago
When a polar molecule causes a charge redistribution in a nonpolar molecule, what are the molecules of the mixture most likely e
White raven [17]

Answer is: dipole-induced dipole interactions.

Intermolecular forces are the forces between molecules or particles.

There are several types of intermolecular forces: hydrogen bonding, ion-induced dipole forces, ion-dipole forces and van der Waals forces.

A dipole-induced dipole interaction is a weak attraction that results when a polar molecule induces a dipole in a nonpolar molecule by disturbing the arrangement of electrons in the nonpolar species.

4 0
3 years ago
Read 2 more answers
Please help. it’s my last question.
ale4655 [162]
<h3>Further explanation </h3>

Given

Atomic symbol

Required

Atomic composition

Solution

Atomic number = number of protons = number of electrons

Mass Number (A) is the sum of protons and neutrons

Number of protons and Number of Neutrons  in nucleus

Number of electrons in the shell

From the picture:

protons = 3

neutrons = 4

electrons = 3

atomic number = protons = electrons = 3

mass number = protons + neutrons = 3+4 = 7

4 0
3 years ago
Other questions:
  • What are the letters on the periodic table called
    12·2 answers
  • A 6.0M solution HCl is diluted to 1.0M How many milliliters of the 6.0M solution would be used to prepare 100.o mL of the dilute
    5·2 answers
  • A capillary tube has the shape of a cylinder, so its volume can be determined using the formula for a cylinder's volume, V=πr^2h
    12·2 answers
  • A 157-mL sample of gas is collected over water at 22°C and 753 torr. What is the volume of the dry gas at STP? (The vapor pressu
    13·1 answer
  • Structure of hydrochloric acid
    8·1 answer
  • There are 2.5 cm in an inch. If a paperclip is 1.5 in long, how many centimeters long is the paperclip?
    14·1 answer
  • Suppose 17. g of hydrochloric cid is mixed with 6.99 g of sodium hydroxide calculate the minimum mass of hydochloric acid taht c
    5·1 answer
  • Which element has 2 valence electrons and is in period 4?
    5·1 answer
  • Pedro is baking a cake for his experiment on chemical changes. He knows a chemical change will occur when he puts the cake mixtu
    7·1 answer
  • Draw the flow chart of production of silk from silk moth
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!