1. Which of the following
equalities is false?
A. 1 kilogram = 100 meters
B. 50 milliliters = 5 centiliters
C. 3 grams = 0.003 milligrams
D. 70 hectometers = 7,000 decimeters

How are the cells produced through mitosis and meiosis different?

If a species is unable to adapt within a
changing environment what can happen to
that species?

Directions: Fill in the blanks with the correct terms to complete the statements. Write your answer on your answer
sheet.
1. Landforms like tall_______
act as an obstacle to traveling air masses, forcing them to rise over the peaks.

2.A___________is likely to dissolve or decrease its wind speed when it passes over a mountain or a mountain range.

3. Bodies of water like________is the main factor in the formation of typhoon.

4. The air in bodies of water is__________due to the evaporation of water.

5. Warm air builds up or increases the__________of a tropical cyclone.

help this question plzzss
I gave brainlest...​

Help!
Which of the following can scientists NOT interpret by examining fossils?
A. How earth's environment has changed overtime.
B. How plants and animals have changed overtime.
C. The age of certain layers of rocks. D. How the pull of gravity has changed.​

heat flows naturally from objects that have higher energy to those with?

If a Maritime Tropical Air mass begins in the Southern United States and keeps traveling North directly over the central USA, will it remain a Maritime Tropical air mass? Why?

balance the following equations

Select the correct text in the passage.

Which statements in this passage about volcanoes do not contain factual errors?

The Hawaiian islands are known for their volcanic activities. In fact, the islands were formed from volcanoes. Before a volcano erupts, earthquake activity beneath the volcano decreases. Scientists use seismometers to measure the earthquake activity that occurs beneath a volcano. They then predict the eruption of that volcano. When a volcano erupts, the amount of carbon dioxide and sulfur dioxide emitted decreases. Scientists measure the amount of these gases to determine the amount of magma present in the volcanic reservoir.

(I couldn't find the science subject so I just put chemistry)

Describe the behavior of water molecules during each stage of the water cycle.


Hurry pls this is due by the end of the class period so like 10 MINUTES HELP

please help me on this question

How many grams of water can be heated from 25°C to 70°C using 15,000 J?

A neutral atom possesses an atomic number of 13 and an atomie mass of 27. Three electrons are lost.
From what region of the atom are they lost?
outside the atom
inside the nucleus
outside the nucleus
both inside and outside the nucleus

How many atoms are there in 0.075 mol of Pb

What will happen to an object
that is more dense than the fluid
it is in?
A. It will sink.
B. It will float.
C. It will rise to the surface.
D. It will bounce out of the water.

Why does increasing temperature generally increase the rate of a chemical reaction?
A. It increases the amount of reactant
B. It decreases the size of the reactant particles.
C. It causes the particles of the reactants to move faster and collide more often.
D. It increases the space between reactant particles so they have more room to move apart

Thermal energy is added to water to raise the temperature to 250F.
Which of the following models BEST describes the movement of the particles after the thermal energy is added?

The thin muscular wall that separates the right side of the heart from the left side is called the​

What are facts about Cells

What are prevailing winds?
A) winds found along the equator that vary in speed
B) winds that change seasonally and vary in speed
C) winds found at the poles at a consistent speed
D) winds that blow in the same direction at a consistent speed

balance the equation C2H5OH + 3O2 → CO2 + H2O

How many milliliters are in 458 liters?

Can the structure of an atom be broken down into smaller parts?

How do ionic bonds form between atoms?

fill in the blank question














please help asap!!!!!!!!!!!!!!

We have 548 grams of CaCl2. How many molecules of CaCl2 do we have? (The molar mass of CaCl2 is 110.98 g/mol)

Group of answer choices
2.97 x 10^24 molecules
3.66 x 10^28 molecules
9.1 x 10^22 molecules
4.37 x 10^22 molecules

A reaction yields 6.25 grams of a product. What is the percent yield if the theoretical yield is 18.8 grams?

Define balanced forces(giving Brainly)

What is the name of the following compound?
Al4C3
-Silver carbonate
-Aluminum carbide
-Aluminum carborhte
-Silver carbide

Your sick puppy is diagnosed with roundworms. They grow inside of the puppy. What type of symbiotic relationship do the puppy and the roundworms have?

A. Cooperative
B. Commensalism
C. Mutualism
D. parasitism

keyboard_arrow_left
Exit

notifications
MR
Test #1 - Energetics
Assigned to Guests
by Trudy Jackson
Live Session
4 Questions

1
5
Calculate the standard enthalpy of formation of gaseous diborane (B2H6) using the following thermochemical information:
4B (s) + 3O2 (g)
→\rightarrow
→ 2B2O3 (s);
Δ\Delta
Δ H = -2509.1 kJ
2H2 (g) + O2 (g)
→\rightarrow
→ 2H2O (l);
Δ\Delta
Δ H = -571.7 kJ
B2H6 (g) + 3O2 (g)
→\rightarrow
→ B2O3 (s) + 3H2O (l);
Δ\Delta
Δ H = -2147.5 kJ
(click below to write/draw)

=

B2H6(G)

2B(S)+3H2
Show Your Work

2
5
Hydrogen cyanide can be prepared by the reaction:

CH4 (g) + NH3 (g)
→\rightarrow
→ HCN (g) + 3H2 (g)

What is the heat of reaction at constant pressure? Use the following thermochemical equations:

N2 (g) + 3H2 (g)
→ \rightarrow
→ 2NH3 (g);
Δ\Delta
Δ H = -91.8 kJ
C (graphite) + 2H2 (g)
→\rightarrow
→ CH4 (g);
Δ\Delta
Δ H = -74.9 kJ
H2 (g) + 2C (graphite) + N2 (g)
→\rightarrow
→2HCN (g);
Δ \Delta
Δ H = 270.3 kJ

(click below to write/draw)

3
5
Complete the following Born Haber cycle for barium phosphide, Ba3P2.
(click below to write/draw)

Show Your Work

4
5
Use bond energies to estimate
Δ\Delta
ΔH for the reaction below:
(click below to write/draw)

Show Your Work

You have responded to 1 of 4 questions.
Submit



1


2


3


4


gesture
keyboard_ar
Hydrogen cyanide can be prepared by the reaction:

CH4 (g) + NH3 (g)
→\rightarrow
→ HCN (g) + 3H2 (g)

What is the heat of reaction at constant pressure? Use the following thermochemical equations:

N2 (g) + 3H2 (g)
→ \rightarrow
→ 2NH3 (g);
Δ\Delta
Δ H = -91.8 kJ
C (graphite) + 2H2 (g)
→\rightarrow
→ CH4 (g);
Δ\Delta
Δ H = -74.9 kJ
H2 (g) + 2C (graphite) + N2 (g)
→\rightarrow
→2HCN (g);
Δ \Delta
Δ H = 270.3 kJ